カラッツSTORE

Login
[Sales Lottery: Applications close 10:00 AM, August 24 (Mon)] 14 carefully selected items, including sphene from Fanalinjo and dandelion-cut blue spinel.
[Releasing August 8 (Sat) at 10:00 PM JST] Gemstone Illustration 3D Stickers, Vol. 2 & 3 ✨
August Birthstones: Peridot and Spinel
KARATZ Books
Custom-made jewelry with stones

NEWS

2026/08/25

[Raffle sale ends Saturday, August 29 at 10 AM] 13 carefully selected rare gemstones, including alexandrite, phosphophyllite, and non-oiled emerald.

2026/07/31

[Notice] Support for areas affected by the 2026 Kumamoto Earthquake

[Application deadline for lottery sale: 10:00 AM on Monday, August 24]

coming soon 【Lottery Sale 0825_01】Brazilian Alexandrite 0.271ct Loose Stone with Japan-Germany Origin Certification

【Lottery Sale 0825_01】Brazilian Alexandrite 0.271ct Loose Stone with Japan-Germany Origin Certification Sale price¥98,000
coming soon 【12564039掲載】ビルマ産非加熱ジェダイスピネル 0.490ctルース

[Lottery Sale 0825_08] Unheated Burmese Jadeite Spinel 0.490ct Loose Stone with GUILD Certificate Sale price¥128,000
coming soon [Lottery Sale 0825_04] Brazilian Santa Maria Aquamarine 1.467ct Loose Gemstone with Japan-Germany Gemological Report

[Lottery Sale 0825_04] Brazilian Santa Maria Aquamarine 1.467ct Loose Gemstone with Japan-Germany Gemological Report Sale price¥69,800
coming soon [Lottery Sale 0825_13] Tanzanian Wurtzite 0.567ct Loose Stone with Japan-Germany Gemstone Report

[Lottery Sale 0825_13] Tanzanian Wurtzite 0.567ct Loose Stone with Japan-Germany Gemstone Report Sale price¥98,000
coming soon 【12564043掲載】ブラジル産インディゴライトトルマリン 2.587ctルース

【Lottery Sale 0825_05】Brazilian Indicolite Tourmaline 2.587ct Loose Stone with Japan-Germany Certificates Sale price¥98,000
coming soon [Lottery Sale 0825_11] Cambodian Blue Zircon (Ratanakiri Blue) 8.1mm/3.256ct Loose Stone with Certificate

[Lottery Sale 0825_11] Cambodian Blue Zircon (Ratanakiri Blue) 8.1mm/3.256ct Loose Stone with Certificate Sale price¥79,800
coming soon 【12563985掲載】コロンビア産ノンオイルエメラルド 0.090ctルース

[Lottery Sale 0825_10] Colombian Non-Oil Emerald 0.090ct Loose GIA Sale price¥128,000
coming soon 【12563987掲載】コロンビア産ノンオイルエメラルド 0.080ctルース

[Lottery Sale 0825_09] Colombian Non-Oil Emerald 0.080ct Loose GIA Sale price¥118,000
coming soon 【12563975掲載】合成モアッサナイト 4.137ctルース

【Lottery Sale 0825_12】【Koshu Kiseki Kiriko pluesthree】Synthetic Moissanite 10mm/4.137ct Loose Stone Sale price¥45,800
coming soon 【32501974掲載】カメレオンダイヤモンド 0.226ctルース(FANCY LIGHT GRAY GREENISH YELLOW（カメレオン）, VS2)

【Lottery Sale 0825_07】Chameleon Diamond 0.226ct Loose (FANCY LIGHT GRAY GREENISH YELLOW (Chameleon), VS2) Sale price¥59,800
coming soon 【12564164掲載】ミャンマー産マスグラバイト 0.546ctルース

[Lottery Sale 0825_03] Myanmar Musgravite 0.546ct Loose with Japanese and German Gemological Report Sale price¥98,000
coming soon [Lottery Sale 0825_02] Bolivian Phosphophyllite 0.137ct Loose Stone with Certificate

[Lottery Sale 0825_02] Bolivian Phosphophyllite 0.137ct Loose Stone with Certificate Sale price¥98,000
coming soon 【12564183掲載】マダガスカル産サファイア 1.480ctルース

【Lottery Sale 0825_06】Madagascar Sapphire 1.480ct Loose GIA Sale price¥128,000

Tuesday, August 25 - New Arrivals & Updates

Gemstone Identification Guidebook (Not available for purchase separately; gift for purchases of 3,000 yen or more)

Gemstone Identification Guidebook (Not available for purchase separately; gift for purchases of 3,000 yen or more) Sale price¥0
coming soon Limited to 10 stones: Madagascar pink sapphire (heart-shaped, including padparadscha color, approximately 3 x 2.3 mm) [Multiple purchase discounts available]

Limited to 10 stones: Madagascar pink sapphire (heart-shaped, including padparadscha color, approximately 3 x 2.3 mm) [Multiple purchase discounts available] Sale price¥5,980
coming soon [On sale May 29th at 10 PM] "Checker x Sui" Koshu Kiseki Cut Mexican Fire Opal (usually 79,800 yen) Gacha with only 10 stones available. Win a Fire Opal (and receive one Contraluz!). [Multiple purchase discount available]

[On sale May 29th at 10 PM] "Checker x Sui" Koshu Kiseki Cut Mexican Fire Opal (usually 79,800 yen) Gacha with only 10 stones available. Win a Fire Opal (and receive one Contraluz!). [Multiple purchase discount available] Sale price¥4,580
coming soon [On sale May 29th at 10 PM] "Checker x Sui" Koshu Kiseki Cut Mexican Fire Opal (usually 79,800 yen) Gacha with only 10 stones available. Win a Fire Opal (and receive one Contraluz!). [Multiple purchase discount available]

[On sale May 29th at 10 PM] "Checker x Sui" Koshu Kiseki Cut Mexican Fire Opal (usually 79,800 yen) Gacha with only 10 stones available. Win a Fire Opal (and receive one Contraluz!). [Multiple purchase discount available] Sale price¥3,980
coming soon [On sale May 29th at 10 PM] "Checker x Sui" Koshu Kiseki Cut Mexican Fire Opal (usually 79,800 yen) Gacha with only 10 stones available. Win a Fire Opal (and receive one Contraluz!). [Multiple purchase discount available]

[On sale May 29th at 10 PM] "Checker x Sui" Koshu Kiseki Cut Mexican Fire Opal (usually 79,800 yen) Gacha with only 10 stones available. Win a Fire Opal (and receive one Contraluz!). [Multiple purchase discount available] Sale price¥4,580
coming soon タンザニア産ヴァイオレットサファイア 0.523ctルース

[Sales Start: August 27, 10 PM JST] 0.523ct Tanzanian Violet Sapphire Loose Gemstone (Color Change Sapphire) with Certification Sale price¥22,800
coming soon タンザニア産サファイア 0.622ctルース

[Sales start August 27, 10 PM JST] Tanzanian Sapphire 0.622 ct Loose (Color Change Sapphire) with Appraisal Report Sale price¥39,800
coming soon タンザニア産スピネル 0.644ctルース

[On sale August 27th at 10 PM] Tanzanian spinel, 0.644ct loose stone (with needle inclusions) with a gemological report Sale price¥19,800
coming soon タンザニア産スピネル 0.536ctルース

[On sale August 27 at 10 PM] Tanzanian Spinel 0.536ct Loose (with needle inclusions) - with appraisal report Sale price¥15,800
coming soon ブラジル産ブルートルマリン 1.566ctルース

[On sale August 27, 10 PM JST] Brazilian blue tourmaline, 1.566 ct, loose, with appraisal Sale price¥69,800
coming soon グリーンサファイア 0.354ctルース

[On sale August 27th at 10 PM] Sri Lankan green sapphire 0.354ct loose stone with certificate Sale price¥12,800
coming soon ロシア産デマントイドガーネット（ホーステール認む） 0.280ctルース

[On sale August 27th at 10 PM JST] Russian Demantoid Garnet (Horsetail inclusion visible) 3.8mm/0.280ct Loose Sale price¥59,800
coming soon ブラジル産インペリアルトパーズ 1.324ctルース

【Sales start: August 27, 10 PM JST】Brazilian Imperial Topaz 1.324ct Loose Stone with Identification Report Sale price¥29,800
coming soon コンゴ産ヘミモルファイト 4.082ctルース

[On sale August 27 at 10 PM] Hemimorphite from Congo, 4.082 ct loose stone Sale price¥18,800
coming soon 合成ルチル 0.566ctルース

[Sale on August 27th at 10 PM] Synthetic Rutile 0.566ct Loose Stone Sale price¥9,800
coming soon 旧チェコスロバキア産モルダバイト 2.231ctルース

【Sales start August 28th, 10 PM JST】Moldavite Loose Stone from former Czechoslovakia, 2.231 ct, with certificate Sale price¥29,800
coming soon 旧チェコスロバキア産モルダバイト 2.265ctルース

【Sales start 8/28 10 PM JST】Moldavite Loose Stone 2.265ct from former Czechoslovakia with Certificate Sale price¥29,800
coming soon コッパールチルクォーツ 1.352ctルース

Brazilian copper rutilated quartz 1.352ct loose stone Sale price¥6,980
coming soon ブラジル産コッパールチルクォーツ 1.647ctルース

Brazilian copper rutilated quartz 1.647ct loose stone Sale price¥6,980
coming soon ブラジル産コッパールチルクォーツ 1.262ctルース

Brazilian copper rutilated quartz 1.262ct loose stone Sale price¥6,980
coming soon ナイジェリア産インディゴライトトルマリン 0.242ctルース

[Sale on 8/28 at 10 PM] Nigerian Indicolite Tourmaline 0.242 ct Loose Stone with Certificate Sale price¥22,800
coming soon ナイジェリア産インディゴライトトルマリン 0.341ctルース

[On sale August 28th at 10 PM] Nigerian Indicolite Tourmaline 0.341ct Loose Gemstone with Certificate Sale price¥29,800
coming soon ナイジェリア産インディゴライトトルマリン 0.340ctルース

[On sale August 28, 10 PM] Nigerian Indicolite Tourmaline 0.340ct Loose Stone with Certificate Sale price¥29,800
coming soon [Posted 12564181] Tanzanian Spinel 1.117ct Loose Stone

[Posted 12564181] Tanzanian Spinel 1.117ct Loose Stone Sale price¥39,800
coming soon [Posted on 12564182] Tanzanian Spinel 1.154ct Loose Gemstone

[Posted on 12564182] Tanzanian Spinel 1.154ct Loose Gemstone Sale price¥39,800
coming soon 【12563862掲載】オーストラリア産ブラックオパール 1.392ctルース

[Listing 12563862] Australian Black Opal 1.392ct Loose Sale price¥69,800
coming soon 【12563859掲載】オーストラリア産ブラックオパール 1.184ctルース

[Published on 12563859] Australian black opal, 1.184ct loose stone Sale price¥45,800
coming soon カンボジア産ブルージルコン（ラタナキリブルー） 0.515ctルース

[On sale August 28th, 10 PM JST] Cambodian Blue Zircon (Ratanakiri Blue) 0.515ct Loose Gemstone with Certificate Sale price¥14,800
coming soon カンボジア産ブルージルコン（ラタナキリブルー） 0.431ctルース

[Sale begins 8/28 at 10 PM JST] Cambodian Blue Zircon (Ratanakiri Blue) 0.431ct Loose Stone with Certification Sale price¥12,800
coming soon カンボジア産ブルージルコン（ラタナキリブルー） 0.419ctルース

[On sale August 28th, 10 PM] Cambodian Blue Zircon (Ratanakiri Blue) 0.419ct Loose Stone with Appraisal Sale price¥12,800
Purple zoisite from Tanzania 1.103ct loose Japanese German edition

Purple zoisite from Tanzania 1.103ct loose Japanese German edition Sale price¥98,000
スリランカ産ピンクサファイア 0.319ctルース 鑑別書

[Featured in 12563725] Sri Lankan Pink Sapphire 0.319ct Loose Sale price¥29,800
パキスタン産クリノヒューマイト 1.440ctルース

Pakistani Clinohumite 1.440ct Loose Stone, Japan-Germany Exchange Sale price¥39,800
スリランカ産イエローサファイア 2.190ctルース GIT

[Lottery Sale ②_202608_10] Yellow Sapphire 2.190ct Loose GIT Sale price¥158,000
Synthetic Alexandrite 0.841ct loose stone

Synthetic Alexandrite 0.841ct loose stone Sale price¥15,800
Synthetic Alexandrite 0.578ct loose stone

Synthetic Alexandrite 0.578ct loose stone Sale price¥9,800
ナミビア産ジェレメジェバイト 0.103ctルース 鑑別書

[Listed as 12563354] Jeremejevite from Namibia, 0.103ct Loose Stone Sale price¥25,800
Sold out コッパールチルクォーツ 1.610ctルース

Brazilian copper rutilated quartz 1.610ct loose stone
【12563267掲載】ボツアナ産ダイヤモンド原石（ソーヤブル） 0.140ct原石

[Posted as 12563267] Rough Botswana Diamond (Sawable) 0.140ct Sale price¥44,800
ロシア産ダイヤモンド原石（ソーヤブル） 0.101ctルース

Russian rough diamond (sawable) 0.101ct loose Sale price¥22,800
メキシコ産ファイアーアゲート 6.090ctルース

Mexican Fire Agate 6.090ct Loose Stone Sale price¥12,800
ブラジル産ユークレース 0.224ctルース （バイカラーユークレース）

Brazilian Euclase 0.224ct Loose Stone (Bicolor Euclase) Sale price¥18,800
ブラジル産ユークレース 0.213ctルース

Brazilian Euclase 0.213ct loose stone (bicolor Euclase) Sale price¥12,800
coming soon Limited to 2 stones: 1 Brazilian Madeira citrine loose stone (round cut, 5.5mm) Multiple purchase discounts available

Limited to 2 stones: 1 Brazilian Madeira citrine loose stone (round cut, 5.5mm) Multiple purchase discounts available Sale price¥3,980
coming soon ナイジェリア産インディゴライトトルマリン 0.308ctルース

[Sale 8/28 10PM JST] Nigerian Indicolite Tourmaline 4.2mm/0.308ct Loose, with Certificate Sale price¥29,800
K18WG ターコイズ 15.78ct/15.73ct ピアス 鑑別書

[Featured in 22602706] [Calafuri] K18WG Turquoise Earrings Sale price¥24,800
Pt900 スターサファイア 0.744ct・ダイヤモンド0.167ctリング 鑑別書

【22602701掲載】【Karafuri】Pt900 Star Sapphire 0.744ct Ring Sale price¥128,000
K18YG アイドクレース/ベスビアナイト 0.908ct・ダイヤモンド0.19ctリング 鑑別書

[Lottery Sale 0731_13] [Colorfury] K18YG Idocrase 0.908ct Ring with appraisal report Sale price¥128,000
Show more

List of new arrivals

ブラジル産ユークレース 0.224ctルース （バイカラーユークレース）

Brazilian Euclase 0.224ct Loose Stone (Bicolor Euclase) Sale price¥18,800
Synthetic Alexandrite 0.578ct loose stone

Synthetic Alexandrite 0.578ct loose stone Sale price¥9,800
ブラジル産ユークレース 0.213ctルース

Brazilian Euclase 0.213ct loose stone (bicolor Euclase) Sale price¥12,800
Synthetic Alexandrite 0.841ct loose stone

Synthetic Alexandrite 0.841ct loose stone Sale price¥15,800
パキスタン産クリノヒューマイト 1.440ctルース

Pakistani Clinohumite 1.440ct Loose Stone, Japan-Germany Exchange Sale price¥39,800
メキシコ産ファイアーアゲート 6.090ctルース

Mexican Fire Agate 6.090ct Loose Stone Sale price¥12,800
Purple zoisite from Tanzania 1.103ct loose Japanese German edition

Purple zoisite from Tanzania 1.103ct loose Japanese German edition Sale price¥98,000
ロシア産ダイヤモンド原石（ソーヤブル） 0.101ctルース

Russian rough diamond (sawable) 0.101ct loose Sale price¥22,800
【12563267掲載】ボツアナ産ダイヤモンド原石（ソーヤブル） 0.140ct原石

[Posted as 12563267] Rough Botswana Diamond (Sawable) 0.140ct Sale price¥44,800
ブラジル産マーカサイトインクォーツ 4.188ctルース

[Published 12562277] Brazilian Marcasite in Quartz Loose Stone 4.188ct Sale price¥12,800
スリランカ産イエローサファイア 2.190ctルース GIT

[Lottery Sale ②_202608_10] Yellow Sapphire 2.190ct Loose GIT Sale price¥158,000
タンザニア産クロムトルマリン 2.271ctルース 鑑別書

【Lottery Sale ②_202608_15】Tanzanian Chrome Tourmaline 2.271ct Loose Stone Sale price¥98,000
ナミビア産ジェレメジェバイト 0.103ctルース 鑑別書

[Listed as 12563354] Jeremejevite from Namibia, 0.103ct Loose Stone Sale price¥25,800
スリランカ産ピンクサファイア 0.319ctルース 鑑別書

[Featured in 12563725] Sri Lankan Pink Sapphire 0.319ct Loose Sale price¥29,800
Pt950 ブルージルコン（ラタナキリブルー） 5.00ct ペンダントトップ（ネックレストップ）鑑別書

[Sale at 10 PM on August 25] [Colorful] Pt950 Blue Zircon (Ratanakiri Blue) 5.00ct Pendant Top (Necklace Top) with certificate Sale price¥148,000
Pt900 タイ産ルビー 1.00ct・ダイヤモンド0.40ctリング GIA

[Published 22602679] [Calafuri] Pt900 Thai Ruby 1ct Ring Sale price¥298,000
K18WG ターコイズ 15.78ct/15.73ct ピアス 鑑別書

[Featured in 22602706] [Calafuri] K18WG Turquoise Earrings Sale price¥24,800
K18YG アイドクレース/ベスビアナイト 0.908ct・ダイヤモンド0.19ctリング 鑑別書

[Lottery Sale 0731_13] [Colorfury] K18YG Idocrase 0.908ct Ring with appraisal report Sale price¥128,000
[Published on 22602652] [Colorful] K18 Synthetic Opal Pendant Top

[Published on 22602652] [Colorful] K18 Synthetic Opal Pendant Top Sale price¥16,800
Pt900 スターサファイア 0.744ct・ダイヤモンド0.167ctリング 鑑別書

【22602701掲載】【Karafuri】Pt900 Star Sapphire 0.744ct Ring Sale price¥128,000
Pt900 マンダリンガーネット 1.15ct・ダイヤモンド0.11ctペンダントトップ（ネックレストップ） 鑑別書

[22602704 Posted] [Colorful] Pt900 Mandarin Garnet 1.15ct Pendant Top Sale price¥110,000
Pt900 ロンドンブルーダイヤモンド 0.13ct・ダイヤモンド0.40ctリング 鑑別書

[Published in 22602703] [Kalafull] Pt900 Ice Blue Diamond (Treated) 0.13ct Ring Sale price¥98,000
Pt900合成アレキサンドライト0.41ct・ダイヤモンド0.54ctリング 鑑別書

[Lottery Sale 0812_08] Pt900 Synthetic Alexandrite and 0.54ct Diamond Ring with Certificate Sale price¥128,000
Pt900ブラジル産シーフォームトルマリン 4mm/0.32ct ・ダイヤモンド0.16ctペンダントトップ（ネックレストップ）鑑別書

[Lottery Sale 0812_04] Pt900 Brazilian Seafoam Tourmaline 4mm/0.32ct and Diamond 0.16ct Pendant Top (Necklace Top) with Identification Report Sale price¥79,800
Pt900 モザンビーク産ルビー 4mm/0.3ct ・ダイヤモンド0.16ctペンダントトップ（ネックレストップ）鑑別書

[Lottery Sale 0812_05] Pt900 Mozambique Ruby 4mm/0.3ct and Diamond 0.16ct Pendant Top (Necklace Top) with Identification Report Sale price¥59,800
ミャンマー産ペリドット 3.748ctルース（スター効果有り）

[Posted 12549460] Star peridot from Myanmar 3.748ct loose Sale price¥19,800
ミャンマー産ペリドット 5.973ctルース（スター効果有り）

[Updated 12546024] Ametrine 4.206ct loose Sale price¥39,800
スリランカ産ブルーサファイア 0.286ctルース 鑑別書

[On Sale August 23rd, 10 PM] Sri Lankan Blue Sapphire 0.286ct Loose Stone with Certificate Sale price¥14,800
スリランカ産イエローサファイア 1.100ctルース 日独鑑

[On sale 8/23 at 10 PM JST] Sri Lankan Yellow Sapphire 1.100ct Loose Stone, Japan/Germany certified Sale price¥49,800
高知県産血赤珊瑚 0.830ctルース

[Sales begin August 24 at 10 PM JST] 0.830ct Red Coral Loose Stone from Kochi Prefecture Sale price¥9,800
高知県産血赤珊瑚 0.984ctルース

[Sales begin 8/24 22:00] Kochi Prefecture Produced Deep Red Coral 0.984ct Loose Stone Sale price¥9,800
高知県産血赤珊瑚 1.370ctルース

[On sale August 24th at 10 PM] Kochi Prefecture Red Coral 1.370ct Loose Stone Sale price¥11,800
高知県産血赤珊瑚 0.939ctルース

[On sale August 24th at 10 PM] Kochi Prefecture Blood Coral 0.939ct Loose Stone Sale price¥9,800
ブラジル産ストロベリークォーツ 0.830ctルース

【Sales start 8/24 10 PM JST】Brazilian Strawberry Quartz 5.9mm/0.830ct Loose Stone Sale price¥6,980
マダガスカル産ラブラドライト 2.651ctルース

[On sale August 25, 10 PM JST] Madagascar Labradorite 8.7mm/2.651ct Rose-Cut Loose Gemstone Sale price¥9,800
ペツォッタイト 0.062ctルース

[Sale starts August 25th at 10 PM JST] Madagascar Pezzottaite 2.7mm/0.062ct Loose Gemstone Sale price¥11,000
ブラジル産ローズクォーツ 1.816ctルース

[On sale August 25th, 10 PM JST] Brazilian Rose Quartz 1.816ct Loose Gemstone Sale price¥12,800
ブラジル産ライモナイトイントパーズ 5.103ctルース

[On sale August 25 at 10 PM] Brazilian Limonite in Topaz 5.103 ct Loose Stone Sale price¥12,800
ブラジル産ローズクォーツ 1.089ctルース

Brazilian Rose Quartz Loose Stone 1.089ct [On Sale August 25th at 10 PM JST] Sale price¥14,800
ブラジル産ラベンダークォーツ（スコロライト） 0.918ctルース

[On sale August 25th at 10 PM] Brazilian Lavender Quartz (Scolite) 0.918ct Loose Gemstone Sale price¥9,800
合成ルチル 0.344ctルース

【Sale starts 8/25 10 PM JST】Synthetic Rutile 0.344ct Loose Gemstone Sale price¥8,800
ルビー 0.168ctルース

[On sale August 25th, 10 PM] Ruby 0.168ct Loose Stone Sale price¥11,800
See more list of new arrivals

《Products eligible for multiple purchase discount》

[On sale May 29th at 10 PM] "Checker x Sui" Koshu Kiseki Cut Mexican Fire Opal (usually 79,800 yen) Gacha with only 10 stones available. Win a Fire Opal (and receive one Contraluz!). [Multiple purchase discount available]

[On sale May 29th at 10 PM] "Checker x Sui" Koshu Kiseki Cut Mexican Fire Opal (usually 79,800 yen) Gacha with only 10 stones available. Win a Fire Opal (and receive one Contraluz!). [Multiple purchase discount available] Sale price¥3,980
[On sale August 23rd at 10 PM] Limited 10 Stones! Amethyst Gacha featuring Koshu-Kiseki-Kiriko-plus-three "Akatsuki" (with one citrine cut by Mr. Sandje) [Multiple Purchase Discount Available]

[On sale August 23rd at 10 PM] Limited 10 Stones! Amethyst Gacha featuring Koshu-Kiseki-Kiriko-plus-three "Akatsuki" (with one citrine cut by Mr. Sandje) [Multiple Purchase Discount Available] Sale price¥3,980
[6/ 10 PM JST Release] 《Limited to 11 Stones》Bicolor Gemstone Gacha featuring Paraiba Tourmaline and Euclase 《Bulk Purchase Discount Available》

[6/ 10 PM JST Release] 《Limited to 11 Stones》Bicolor Gemstone Gacha featuring Paraiba Tourmaline and Euclase 《Bulk Purchase Discount Available》 Sale price¥3,980
[On sale May 23rd at 10 PM] "Limited 9 Stones - Shinjuku Pop-Up Celebration" All stones with Central Gem Laboratory sorting (3.0-3.5mm, VS-SI clarity) "Multiple purchase discount available"

[On sale May 23rd at 10 PM] "Limited 9 Stones - Shinjuku Pop-Up Celebration" All stones with Central Gem Laboratory sorting (3.0-3.5mm, VS-SI clarity) "Multiple purchase discount available" Sale price¥3,980
Limited to 10 stones: 1 unheated yogo sapphire rough stone. Discounts available for multiple purchases.

Limited to 10 stones: 1 unheated yogo sapphire rough stone. Discounts available for multiple purchases. Sale price¥3,980
1 Brazilian Euclase rough stone (discount available for multiple purchases)

1 Brazilian Euclase rough stone (discount available for multiple purchases) Sale price¥3,980
[On sale August 21st, 10 PM] "Limited to 20 stones" Sri Lankan Ratnapura Green Zircon Single Stone Loose Gemstone "Bulk purchase discount available"

[On sale August 21st, 10 PM] "Limited to 20 stones" Sri Lankan Ratnapura Green Zircon Single Stone Loose Gemstone "Bulk purchase discount available" Sale price¥3,980
[Sale starts August 21st, 10 PM JST] Limited 6 stones: Sri Lankan Uba Moonstone (round buff top cut, 6mm) - Multi-purchase discount available

[Sale starts August 21st, 10 PM JST] Limited 6 stones: Sri Lankan Uba Moonstone (round buff top cut, 6mm) - Multi-purchase discount available Sale price¥6,980
[On sale July 10 at 10 PM] Limited 8 stones: Sweet Home Mine rhodochrosite single loose stone (average 0.1 ct) [Multiple purchase discount available]

[On sale July 10 at 10 PM] Limited 8 stones: Sweet Home Mine rhodochrosite single loose stone (average 0.1 ct) [Multiple purchase discount available] Sale price¥2,980
[On sale July 20th at 10 PM] "Limited to 13 Stones" Diamond Gacha: Win a FANCY VIVID Yellow Diamond (with sorting report) worth 22,800 yen. One loose stone. (Multiple purchase discount available.)

[On sale July 20th at 10 PM] "Limited to 13 Stones" Diamond Gacha: Win a FANCY VIVID Yellow Diamond (with sorting report) worth 22,800 yen. One loose stone. (Multiple purchase discount available.) Sale price¥2,580
[On sale August 16th at 10 PM JST] Limited to 4 stones: Swiss Blue Topaz (Star of David/Hexagram Cut, approx. 8mm) [Multiple purchase discount available]

[On sale August 16th at 10 PM JST] Limited to 4 stones: Swiss Blue Topaz (Star of David/Hexagram Cut, approx. 8mm) [Multiple purchase discount available] Sale price¥5,980
[Sales start 8/13 10 PM] Limited to 12 Stones! Beryl Gacha where you can win a 12mm camellia-cut Limonite in Beryl or Santa Maria Aquamarine with a certificate of authenticity for 45,800 yen. (Multiple purchase discount available)

[Sales start 8/13 10 PM] Limited to 12 Stones! Beryl Gacha where you can win a 12mm camellia-cut Limonite in Beryl or Santa Maria Aquamarine with a certificate of authenticity for 45,800 yen. (Multiple purchase discount available) Sale price¥4,580
[On sale August 12th at 10 PM] "Limited to 15 Stones" Diamond Gacha featuring rare butterfly-cut diamonds "Multiple Purchase Discount Available"

[On sale August 12th at 10 PM] "Limited to 15 Stones" Diamond Gacha featuring rare butterfly-cut diamonds "Multiple Purchase Discount Available" Sale price¥5,980
Mini bottle keychain filled with natural stones (11 colors available, multiple purchase discount)

Mini bottle keychain filled with natural stones (11 colors available, multiple purchase discount) Sale price¥3,980
[On sale August 15th at 10 PM] Paraiba Gacha where you can win a Brazilian Paraiba Tourmaline (CuO: 1.4%, MnO: 2.7%) normally priced at 39,800 yen, limited to 10 stones. (Multiple purchase discount available)

[On sale August 15th at 10 PM] Paraiba Gacha where you can win a Brazilian Paraiba Tourmaline (CuO: 1.4%, MnO: 2.7%) normally priced at 39,800 yen, limited to 10 stones. (Multiple purchase discount available) Sale price¥8,800
[On sale May 23rd at 10 PM] "Limited 9 Stones - Shinjuku Pop-Up Celebration" All stones with Central Gem Laboratory sorting (3.0-3.5mm, VS-SI clarity) "Multiple purchase discount available"

[On sale May 23rd at 10 PM] "Limited 9 Stones - Shinjuku Pop-Up Celebration" All stones with Central Gem Laboratory sorting (3.0-3.5mm, VS-SI clarity) "Multiple purchase discount available" Sale price¥18,800
[On sale 8/15 at 10 PM JST] Colombian Emerald Gacha featuring Shimizu Kisaki's 8mm Clover In-cut (regularly 79,800 JPY) - only 15 stones available! (Bonus green beryl included) [Multiple purchase discount available]

[On sale 8/15 at 10 PM JST] Colombian Emerald Gacha featuring Shimizu Kisaki's 8mm Clover In-cut (regularly 79,800 JPY) - only 15 stones available! (Bonus green beryl included) [Multiple purchase discount available] Sale price¥6,980
[On sale August 14th, 10 PM] Limited 10 pieces: Zimbabwe Mint Fluorite Single Stone Loose (average 2.2ct) [Bulk purchase discount available]

[On sale August 14th, 10 PM] Limited 10 pieces: Zimbabwe Mint Fluorite Single Stone Loose (average 2.2ct) [Bulk purchase discount available] Sale price¥4,580
[On sale May 23rd at 10 PM] "Limited 9 Stones - Shinjuku Pop-Up Celebration" All stones with Central Gem Laboratory sorting (3.0-3.5mm, VS-SI clarity) "Multiple purchase discount available"

[On sale May 23rd at 10 PM] "Limited 9 Stones - Shinjuku Pop-Up Celebration" All stones with Central Gem Laboratory sorting (3.0-3.5mm, VS-SI clarity) "Multiple purchase discount available" Sale price¥12,800
[Sale starts July 7 at 10 PM] Limited to 14 Stones: Special Cut Gacha [Bulk Purchase Discount Available]

[Sale starts July 7 at 10 PM] Limited to 14 Stones: Special Cut Gacha [Bulk Purchase Discount Available] Sale price¥4,980
Limited to 20 Stones: Indicolite Tourmaline Gacha with 5 Stones & Certificate – 1 Loose Stone (Multiple Purchase Discount Available)

Limited to 20 Stones: Indicolite Tourmaline Gacha with 5 Stones & Certificate – 1 Loose Stone (Multiple Purchase Discount Available) Sale price¥3,980
[On Sale August 2nd at 10 PM JST] Limited to 12 Stones: Blue Gemstone Gacha (Paraiba Tourmaline, Euclase, Tanzanite, etc.) + 1 Aquamarine Stone Included (Bulk Purchase Discount Available)

[On Sale August 2nd at 10 PM JST] Limited to 12 Stones: Blue Gemstone Gacha (Paraiba Tourmaline, Euclase, Tanzanite, etc.) + 1 Aquamarine Stone Included (Bulk Purchase Discount Available) Sale price¥7,980
[Limited to 24 stones] Oregon Sunstone from America with beautiful Schiller (Oval cut, 5 x 7mm) [Multiple purchase discount available]

[Limited to 24 stones] Oregon Sunstone from America with beautiful Schiller (Oval cut, 5 x 7mm) [Multiple purchase discount available] Sale price¥5,980
[Sale starts 10PM on July 12] Limited 20 Stones: Grandidierite Single Stone Loose (Avg. 0.035ct) from Madagascar [Multiple Purchase Discount Available]

[Sale starts 10PM on July 12] Limited 20 Stones: Grandidierite Single Stone Loose (Avg. 0.035ct) from Madagascar [Multiple Purchase Discount Available] Sale price¥3,980
[Sale on 7/ at 10 PM] "Limited to 13 Stones" Madagascar Sapphirine, average 0.09ct "Multiple Purchase Discount Available"

[Sale on 7/ at 10 PM] "Limited to 13 Stones" Madagascar Sapphirine, average 0.09ct "Multiple Purchase Discount Available" Sale price¥4,580
《Limited to 5 Stones》Andesine-Labradorite from Balangoda, Sri Lanka (Rainbow Moonstone) (Pear Shape Buff-Top Cut, 5.0×3.0mm) 1 Stone Loose 《Multiple Purchase Discount Available》

《Limited to 5 Stones》Andesine-Labradorite from Balangoda, Sri Lanka (Rainbow Moonstone) (Pear Shape Buff-Top Cut, 5.0×3.0mm) 1 Stone Loose 《Multiple Purchase Discount Available》 Sale price¥5,980
See more products eligible for multiple purchase discounts

Bungo and Alchemist

Pt950 ブルージルコン（ラタナキリブルー） 5.00ct ペンダントトップ（ネックレストップ）鑑別書

[Sale at 10 PM on August 25] [Colorful] Pt950 Blue Zircon (Ratanakiri Blue) 5.00ct Pendant Top (Necklace Top) with certificate Sale price¥148,000
Pt900 タイ産ルビー 1.00ct・ダイヤモンド0.40ctリング GIA

[Published 22602679] [Calafuri] Pt900 Thai Ruby 1ct Ring Sale price¥298,000
K18WG ターコイズ 15.78ct/15.73ct ピアス 鑑別書

[Featured in 22602706] [Calafuri] K18WG Turquoise Earrings Sale price¥24,800
K18YG アイドクレース/ベスビアナイト 0.908ct・ダイヤモンド0.19ctリング 鑑別書

[Lottery Sale 0731_13] [Colorfury] K18YG Idocrase 0.908ct Ring with appraisal report Sale price¥128,000
[Published on 22602652] [Colorful] K18 Synthetic Opal Pendant Top

[Published on 22602652] [Colorful] K18 Synthetic Opal Pendant Top Sale price¥16,800
Pt900 スターサファイア 0.744ct・ダイヤモンド0.167ctリング 鑑別書

【22602701掲載】【Karafuri】Pt900 Star Sapphire 0.744ct Ring Sale price¥128,000
Pt900 マンダリンガーネット 1.15ct・ダイヤモンド0.11ctペンダントトップ（ネックレストップ） 鑑別書

[22602704 Posted] [Colorful] Pt900 Mandarin Garnet 1.15ct Pendant Top Sale price¥110,000
Pt900 ロンドンブルーダイヤモンド 0.13ct・ダイヤモンド0.40ctリング 鑑別書

[Published in 22602703] [Kalafull] Pt900 Ice Blue Diamond (Treated) 0.13ct Ring Sale price¥98,000
Pt900/K18 ルビー 0.28ct・ダイヤモンド0.20ct リング 鑑別書

【#202607 Akihabara Pop-up Store - Currently Displayed Off-site】【On Sale June 22nd at 10 PM】【Colorfully】Pt900/K18 Ruby 0.28ct, Diamond 0.20ct Ring with Appraisal Sale price¥98,000
K18WG パライバトルマリン 0.09ct・ダイヤモンド0.06ctリング（CuO:1.0%、MnO:0.4%）ソーティング（一般社団法人 宝石貴金属協会）

[22602666 listed] [Colorful] K18WG Paraiba Tourmaline 0.09ct Ring Sale price¥198,000
Pt900 ルビー 0.58ct・ダイヤモンド0.59ctリング 鑑別書

[Item ID: 22602669] [Karafuri] Pt900 Ruby 0.58ct Ring Sale price¥98,000
K18 ルビー 6.74ct ・ダイヤモンド0.91ct 鑑別書

[Published 22602698] [Karafuri] K18 Ruby 6.74ct Ring Diamond 0.91ct with identification report Sale price¥228,000
Pt900 ダイヤモンド 1.00ctct リング

【#202607 Akihabara Pop-up Store - Currently Out of Stock】【Colorful】Pt900 Diamond 1.00ct Ring Sale price¥98,000
【#202607 Akihabara Pop-up Store - Currently Removed for Display】[Colorfuri] Pt900 Black Opal 0.83ct / Diamond 0.62ct Ring with Certificate

【#202607 Akihabara Pop-up Store - Currently Removed for Display】[Colorfuri] Pt900 Black Opal 0.83ct / Diamond 0.62ct Ring with Certificate Sale price¥198,000
Pt850 ベネチアンチェーン ネックレス 約45cm スライドチェーン

【On sale August 1st at 10 PM】[Colorfle] Pt850 Venetian Chain Necklace, Approx. 45cm, Adjustable Slide Chain Sale price¥39,800
Pt900 ビルマ産ルビー 1.07ct・ダイヤモンド0.32ctリング GIA

[22602674 Listed] [Karafuri] Pt900 Burma Ruby 1.07ct Ring Sale price¥258,000
K18 ブルーサファイア 1.13ct・ダイヤモンド0.75ctリング 鑑別書

[On Sale August 6, 10 PM] [Colori] K18 Blue Sapphire 1.13ct / Diamond 0.75ct Ring with Appraisal Report Sale price¥188,000
Pt850 ルビー 0.85ct・ダイヤモンド0.09ctリング 鑑別書

[On sale at 10 PM on August 6] [Karafuri] Pt850 Ruby 0.85ct, Diamond 0.09ct Ring with Appraisal Certificate Sale price¥79,800
Pt900 アコヤ真珠（アコヤパール）10.2mm・ダイヤモンド0.23ctリング 鑑別書

[Published in 22602657] [Colorful] Pt900 Akoya Pearl Ring Sale price¥98,000
Pt900 インペリアルトパーズ 3.88ct・ダイヤモンド0.26ct リング 鑑別書

【Karahuri】Pt900 Imperial Topaz 3.88ct / Diamond 0.26ct Ring with Certificate Sale price¥258,000
Pt900/Pt850 ダイヤモンド 4.0mm/0.29ct 一粒ペンダント（ネックレス）

[COLORFUL] Pt900/Pt850 Diamond 4.0mm/0.29ct Solitaire Pendant (Necklace) Sale price¥35,800
Pt850/K14WG アップルグリーンダイヤモンド0.38ct・ダイヤモンド0.50ct ピアス 鑑別書

[COLORFUL] Pt850/K14WG Apple Green Diamond 0.38ct Diamond 0.50ct Earrings with Certificate of Appraisal Sale price¥98,000
Pt900 ルビー 0.69ct・ダイヤモンド0.16ctリング 鑑別書

[Karafuru] Pt900 Ruby 0.69ct, Diamond 0.16ct Ring with Appraisal Report Sale price¥188,000
K18 タンザナイト 0.25ct リング

[22602668 listed] [Colorful] K18 Tanzanite 0.25ct Ring Sale price¥79,800
Show more

KARATZ collaboration
See all KARATZ collaborations

jewelry

K18WG ターコイズ 15.78ct/15.73ct ピアス 鑑別書
View all jewelry

Shop by birthstone

January

February

March

April

May

June

July

August

September

October

November

December

Search by category

Custom-made with a choice of stones

1石から選ぶオーダーメイド《リ ング》申し込みページ ～ Solo(ソロ) ～ - カラッツSTORE
1石から選ぶオーダーメイド《ペ ンダント》申し込み～ SOLO(ソロ) ～ - カラッツSTORE
1石から選ぶオーダーメイド《ピ アス》申し込みページ ～ Solo(ソロ) ～ - カラッツSTORE
Learn more about custom-made products

KARATZ・Five Commitments

So that more people can feel closer to jewellery and enjoy it easily.
We will introduce KARATZ's thoughts on products, the attention to detail and efforts in selecting gemstones and creating jewelry.

KARATZ's Initiatives and Social Contributions

We will introduce KARATZ's efforts, including nurturing the next generation and business collaboration to develop the industry, and supporting children in Sri Lanka, the land of jewels.

KARATZ Books

These are books that KARATZ has been involved in writing, supervising, and planning. They are all books that allow you to enjoy gemstones from various angles. You can also purchase them directly.

jeweler's tools

For those who want to enjoy jewelry more but don't know what tools to use, we will introduce tools that are also used by KARATZ staff. You can also purchase them directly.