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宝石図鑑立体シール新作2種✨ 7/30より秋葉原POPUP先行販売／通販は8月中旬予定
July birthstone: Ruby and Sphene
[2k540] (Under the JR Akihabara-Okachimachi elevated railway) Pop-up Store Announcement [Thursday, July 30 - Sunday, August 2]
KARATZ Books
Custom-made jewelry with stones

NEWS

2026/07/11

【Sales close 10 am on Tue, July 14: Lottery sales】14 carefully selected items including unheated Yogo sapphire, unheated Kashmir sapphire, bekily blue garnet, and GIA certified diamonds

2026/07/06

[2k540 AKI-OKA ARTISAN] (Under the JR Akihabara-Okachimachi overpass) Pop-up store announcement [Thursday, July 30 - Sunday, August 2]

2026/07/02

[Media Coverage] KARATZ Jewelry Featured on "Ame Talk!"

2026/06/29

[Notice] Shipping delay for some "Dr. STONE" anime collaboration items

New & Updated on Sunday, July 12

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
{June Campaign Limited Edition} Rare Stone Gacha💎 Padparadscha Sapphire 0.3ct+ with Certificate, Benitoite, Red Beryl, etc. Loose Stones for 1 Stone {Multiple Purchase Discounts Available}

{June Campaign Limited Edition} Rare Stone Gacha💎 Padparadscha Sapphire 0.3ct+ with Certificate, Benitoite, Red Beryl, etc. Loose Stones for 1 Stone {Multiple Purchase Discounts Available} Sale price¥7,980
coming soon [Sale on 7/ at 10 PM JST] Limited 6 stones: Rainbow Aquamarine, average 0.7ct (Multiple purchase discount available)

[Sale on 7/ at 10 PM JST] Limited 6 stones: Rainbow Aquamarine, average 0.7ct (Multiple purchase discount available) Sale price¥5,980
coming soon FANCY PURPLISH PINK/SI-1/with Pink Diamond Gacha (Multiple purchase discount available)

FANCY PURPLISH PINK/SI-1/with Pink Diamond Gacha (Multiple purchase discount available) Sale price¥10,000
coming soon K18/Pt950 ブラジル産パライバトルマリン 0.045ct リング

[Lottery Sale 0629_10] K18/Pt950 Brazilian Paraiba Tourmaline 0.045ct / Diamond 0.042ct Ring (CuO: 2.0%, MnO: 2.2%) Sale price¥148,000
coming soon [12558084 posted] Benitoite 0.190ct Loose, with identification report, Made in America Benitoite 0.158ct Loose, with identification report Benitoite 0.190ct Loose, with identification report

[12558084 posted] Benitoite 0.190ct Loose, with identification report, Made in America Benitoite 0.158ct Loose, with identification report Benitoite 0.190ct Loose, with identification report Sale price¥118,000
coming soon [Listed as 12563740] Madagascar Grandidierite 0.171ct Loose Stone

[Listed as 12563740] Madagascar Grandidierite 0.171ct Loose Stone Sale price¥29,800
coming soon [12563737 Posted] Brazilian Green Tourmaline 0.770ct Loose Stone

[12563737 Posted] Brazilian Green Tourmaline 0.770ct Loose Stone Sale price¥25,800
coming soon Kochi Prefecture oxblood coral 1.593ct loose

Kochi Prefecture oxblood coral 1.593ct loose Sale price¥9,800
coming soon [12563734] Tanzanian Red Spinel, 0.229ct Loose

[12563734] Tanzanian Red Spinel, 0.229ct Loose Sale price¥45,800
coming soon 【12563000掲載】ブラジル産ティンカーベルクォーツ（ピンクファイヤークォーツ） 3.108ctルース

[Listed as 12563000] Brazilian Tinkerbell Quartz (Pink Fire Quartz) 3.108ct Loose Sale price¥29,800
coming soon 【12563459掲載】タンザニア産バイカラーグロッシュラーガーネット 0.882ctルース

[Listing 12563459] Bi-Color Grossular Garnet from Tanzania 0.882ct Loose Stone Sale price¥22,800
coming soon 【12562413掲載】ブラジル産ティンカーベルクォーツ（ピンクファイヤークォーツ） 3.865ctルース

[Published on 12562413] Brazilian Tinkerbell Quartz (Pink Fire Quartz) 3.865ct Loose Stone Sale price¥29,800
coming soon 【12562350掲載】アメリカ産オレゴンサンストーン 1.389ctルース

【Listed in 12562350】Oregon Sunstone from the USA, 1.389ct loose Sale price¥29,800
coming soon 【12563434掲載】マラウイ産ムーンストーン（マラウイムーンストーン） 2.155ctルース

[Posted on 12563434] Malawi Moonstone (Malawi Moonstone) 2.155ct Loose Sale price¥12,800
coming soon 【掲載番号12563727】スリランカ産パープルサファイア 0.634ctルース

【掲載番号12563727】スリランカ産パープルサファイア 0.634ctルース Sale price¥69,800
coming soon [12563504 Listed] Unheated Pigeon Blood Ruby from Burma 0.300ct Loose

[12563504 Listed] Unheated Pigeon Blood Ruby from Burma 0.300ct Loose Sale price¥88,800
coming soon [Listed as 22602661] [Karahuri] Pt900 Emerald 0.3ct Pendant Top

[Listed as 22602661] [Karahuri] Pt900 Emerald 0.3ct Pendant Top Sale price¥29,800
coming soon 【12563433掲載】マラウイ産ムーンストーン（マラウイムーンストーン） 2.102ctルース

[12563433 listed] Malawi Moonstone (Malawi Moonstone) 2.102ct Loose Sale price¥14,800
coming soon 【12563432掲載】マラウイ産ムーンストーン（マラウイムーンストーン） 1.747ctルース

[Posted 12563432] Malawi Moonstone 1.747ct Loose Sale price¥8,800
coming soon 【12562633掲載】ブラジル産ティンカーベルクォーツ（ピンクファイヤークォーツ） 4.594ctルース

[Posted on 12562633] Brazilian Tinkerbell Quartz (Pink Fire Quartz) 4.594ct Loose Stone Sale price¥25,800
coming soon 【12562347掲載】アメリカ産オレゴンサンストーン 1.224ctルース

[Listed as 12562347] U.S. Oregon Sunstone 1.224ct Loose Gemstone Sale price¥28,800
【12563438掲載】マラウイ産ムーンストーン（マラウイムーンストーン） 2.598ctルース

[Featured in 12563438] Malawi Moonstone (Malawi Moonstone) 2.598ct Loose Sale price¥16,800
【12563435掲載】マラウイ産ムーンストーン（マラウイムーンストーン） 3.158ctルース

[Listed as 12563435] Malawi Moonstone 3.158ct Loose Sale price¥18,800
【12563437掲載】マラウイ産ムーンストーン（マラウイムーンストーン） 1.948ctルース

[12563437 Listed] Malawi Moonstone 1.948ct Loose Gemstone Sale price¥8,800
【12563436掲載】マラウイ産ムーンストーン（マラウイムーンストーン） 2.199ctルース

[Listed as 12563436] Malawi Moonstone (Malawi Moonstone) 2.199ct Loose Sale price¥12,800
Pt900 ダイヤモンド原石 2.733ct・ダイヤモンド0.68ctリング 鑑別書

[On sale July 13th, 10 PM JST] [COLORFULI] Pt900 Rough Diamond 2.733ct / Diamond 0.68ct Ring with Appraisal Card Sale price¥198,000
K18スライスダイヤモンド・イエローサファイア ピアス

[On sale July 13th at 10 PM] [Colorful] K18 Slice Diamond and Yellow Sapphire Earrings with Certificate Sale price¥55,800
カメレオンダイヤモンド 4.0mm/0.255ctルース(LIGHT GRAYISH GREEN YELLOW, VS2)

[For xxx only] Chameleon Diamond 0.255ct Loose (LIGHT GRAYISH GREEN YELLOW, VS2) (Listed under 32501581) Sale price¥59,800
Sold out スペイン産スファレライト 6.1mm/1.197ctルース

[Sale starts at 10 PM on July 13th] Spanish Sphalerite 6.1mm/1.197ct Loose
オーストラリア産レインボーラティスサンストーン 2.073ctルース

[On sale July 13, 10 PM] Australian Rainbow Lattice Sunstone 2.073ct Loose Gemstone Sale price¥15,800
高知県産血赤珊瑚 4.485ctルース

[Sales start July 13, 10 PM] Kochi Prefecture red coral 4.485 ct loose stone Sale price¥98,000
ナミビア産ジェレメジェバイト 0.061ctルース 鑑別書

Jeremejevite 0.061ct loose stone Sale price¥18,800
[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¥4,980
[On sale July 12th at 10 PM] "Limited to 15 Stones" All stones with GIA certificate. Madagascar Grandidierite 1 stone loose (average 0.065ct) "Multiple purchase discount available"

[On sale July 12th at 10 PM] "Limited to 15 Stones" All stones with GIA certificate. Madagascar Grandidierite 1 stone loose (average 0.065ct) "Multiple purchase discount available" Sale price¥9,800
アメリカ産オレゴンサンストーン 1.397ctルース

[On sale 7/12 at 10 PM] US Oregon Sunstone 7.1mm/1.397ct Loose Stone Sale price¥39,800
Show more

List of new arrivals

ブラジル産ユークレース 0.289ctルース

Brazilian Euclase 0.289ct loose stone Sale price¥12,800
ブラジル産ユークレース 0.263ctルース

Brazilian Euclase 0.263ct Loose Stone (Colorless Euclase) Sale price¥9,800
ブラジル産ユークレース 0.695ctルース

Brazilian Euclase 0.695ct Loose Stone Sale price¥18,800
フラワールチルインクォーツ ルース

Brazilian Flower Rutile in Quartz 5.122ct Loose Stone Sale price¥7,980
Synthetic Alexandrite 0.287ct loose stone

Synthetic Alexandrite 0.287ct loose stone Sale price¥8,800
デンドリティックアゲート 1.679ctルース

Brazilian Dendritic Agate 1.679ct Loose Stone Sale price¥5,980
デンドリティックアゲート 2.788ctルース

Brazilian Dendritic Agate 2.788ct Loose Stone Sale price¥6,980
デンドリティックアゲート 3.575ctルース

Brazilian Dendritic Agate 3.575ct Loose Stone Sale price¥8,800
ラベンダータンザナイト 0.558ctルース

Tanzanian Lavender Tanzanite 0.558ct Loose Stone Sale price¥12,800
バイカラータンザナイト 0.573ctルース

Tanzanian bicolor tanzanite 0.573ct loose stone Sale price¥12,800
タンザニア産ラベンダータンザナイト 0.577ctルース

Tanzanian Lavender Tanzanite 0.577ct Loose Stone Sale price¥12,800
ピンクトルマリン 0.418ctルース

Brazilian Pink Tourmaline 0.418ct Loose Stone (Rouge Cut) Sale price¥8,800
モンタナアゲート 9.528ctルース

Montana Agate 9.528ct Loose Sale price¥8,800
オレゴンサンストーン 0.736ctルース

Oregon Sunstone from the United States 0.736ct loose stone Sale price¥8,800
ブラジル産ルチルレイテッドクォーツ 1.406ctルース

Brazilian rutilated quartz (rutilated quartz) 7.8mm/1.406ct loose stone Sale price¥8,800
ブラジル産ルチルレイテッドクォーツ 1.482ctルース

Brazilian rutilated quartz (rutilated quartz) 8.1mm/1.482ct loose stone Sale price¥8,800
ブラジル産ルチルレイテッドクォーツ 2.090ctルース

Brazilian rutilated quartz (rutilated quartz) 8.2mm/2.090ct loose stone Sale price¥8,800
ロシア産ダイヤモンド原石（ソーヤブル） 0.088ctルース

Russian rough diamond (sawable) 0.088ct loose Sale price¥19,800
【甲州貴石切子plusthree】メキシコ産ファイアオパール 4.633ctルース《コラボ》 ワッペン

[Koshu Precious Stones plusthree] Mexican Fire Opal 4.633ct Loose Stone [Collaboration] Patch Sale price¥49,800
スリランカ産クリソベリルキャッツアイ 1.514ctルース

Sri Lankan Chrysoberyl Cat's Eye 1.514ct Loose Stone Sale price¥5,980
スリランカ産クリソベリルキャッツアイ 1.074ctルース

Sri Lankan Chrysoberyl Cat's Eye 1.074ct Loose Stone Sale price¥4,980
ブラジル産パライバトルマリン 0.360ctルース GIA鑑別書

Brazilian Paraiba Tourmaline 0.360ct Loose GIA Sale price¥298,000
スリランカ産イエローサファイア 0.349ctルース

Sri Lankan Yellow Sapphire 0.349ct Loose Sale price¥12,800
合成モアッサナイト 0.678ctルース

Synthetic Moissanite 5.8mm/0.678ct Loose Stone Sale price¥8,800
Brazilian Green Tourmaline 0.825ct Loose Stone

Brazilian Green Tourmaline 0.825ct Loose Stone Sale price¥9,800
Brazilian Green Tourmaline 0.376ct Loose Stone

Brazilian Green Tourmaline 0.376ct Loose Stone Sale price¥7,980
Brazilian Green Tourmaline 0.332ct Loose Stone

Brazilian Green Tourmaline 0.332ct Loose Stone Sale price¥7,980
ブラジル産ティンカーベルクォーツ（ピンクファイヤークォーツ） 0.344ctルース

Brazilian Tinkerbell Quartz (Pink Fire Quartz) 0.344ct Loose Stone Sale price¥9,800
タンザニア産バイカラーゾイサイト 0.489ctルース

Tanzania Bicolor Zoisite 4.6mm/0.489ct Loose Stone Sale price¥9,800
タンザニア産バイカラーゾイサイト 0.540ctルース

Tanzania Bicolor Zoisite 4.8mm/0.540ct Loose Stone Sale price¥9,800
Limited to 6 stones: 1 loose pink spinel from Mahenge, Tanzania (round cut, 3.0mm) Discounts for multiple purchases

Limited to 6 stones: 1 loose pink spinel from Mahenge, Tanzania (round cut, 3.0mm) Discounts for multiple purchases Sale price¥4,980
タンザニア産タンザナイト 0.497ctルース

Tanzanite from Tanzania 0.497ct loose stone Sale price¥9,800
タンザニア産バイカラーゾイサイト 0.486ctルース

Tanzania Bicolor Zoisite 4.7mm/0.486ct Loose Stone Sale price¥9,800
Tanzanite from Tanzania 0.245ct loose stone

Tanzanite from Tanzania 0.245ct loose stone Sale price¥8,800
タンザニア産バイカラーゾイサイト 0.295ctルース

Tanzania Bicolor Zoisite 0.295ct Loose Stone Sale price¥7,980
タンザナイト 0.385ctルース

Tanzanite from Tanzania 0.385ct loose stone Sale price¥8,800
バイカラーゾイサイト 0.286ctルース

Tanzania Bicolor Zoisite 0.286ct Loose Stone Sale price¥7,980
オーストラリア産ブラックオパール 3.242ctルース

Australian black opal 3.242ct loose stone Sale price¥59,800
合成モアッサナイト 0.634ctルース

Synthetic Moissanite 0.634ct loose stone Sale price¥9,800
アルマンディンガーネット 1.471ctルース

Almandine Garnet 1.471ct Loose Stone Sale price¥14,800
アルマンディンガーネット 1.388ctルース

Almandine Garnet 1.388ct Loose Stone Sale price¥11,800
アルマンディンガーネット 1.988ctルース

Almandine Garnet 1.988ct Loose Stone Sale price¥16,800
アルマンディンガーネット 1.485ctルース

Almandine Garnet 1.485ct Loose Stone Sale price¥15,800
See more list of new arrivals

《Products eligible for multiple purchase discount》

[On sale July 12th at 10 PM] "Limited to 15 Stones" All stones with GIA certificate. Madagascar Grandidierite 1 stone loose (average 0.065ct) "Multiple purchase discount available"

[On sale July 12th at 10 PM] "Limited to 15 Stones" All stones with GIA certificate. Madagascar Grandidierite 1 stone loose (average 0.065ct) "Multiple purchase discount available" Sale price¥9,800
[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¥4,980
{June Campaign Limited Edition} Rare Stone Gacha💎 Padparadscha Sapphire 0.3ct+ with Certificate, Benitoite, Red Beryl, etc. Loose Stones for 1 Stone {Multiple Purchase Discounts Available}

{June Campaign Limited Edition} Rare Stone Gacha💎 Padparadscha Sapphire 0.3ct+ with Certificate, Benitoite, Red Beryl, etc. Loose Stones for 1 Stone {Multiple Purchase Discounts Available} Sale price¥7,980
[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¥3,980
[On sale July 10th, 10 PM JST] Anthill Garnet from USA (round cut, approx. 3mm) - Only 3 stones left! (Multiple purchase discount available)

[On sale July 10th, 10 PM JST] Anthill Garnet from USA (round cut, approx. 3mm) - Only 3 stones left! (Multiple purchase discount available) Sale price¥3,980
[On sale July 10th at 10 PM] Veatchite, Pakistan, Loose Stone (Avg. 0.04ct) - Limited to 23 Stones - Multiple Purchase Discount Available

[On sale July 10th at 10 PM] Veatchite, Pakistan, Loose Stone (Avg. 0.04ct) - Limited to 23 Stones - Multiple Purchase Discount Available Sale price¥4,980
[Sales start July 11th, 10 PM JST] 《Limited to 11 stones》 Madagascar Apatite Single Stone Loose (UV fluorescent type, average 1.0ct) 《Bulk purchase discount available》

[Sales start July 11th, 10 PM JST] 《Limited to 11 stones》 Madagascar Apatite Single Stone Loose (UV fluorescent type, average 1.0ct) 《Bulk purchase discount available》 Sale price¥2,980
【7/11 22時販売】《限定15石》通常29,800円のフォレストグリーン中宝ソ付きや通常22,800円のカナリーイエローやアイスブルーなどトリートダイヤガチャ《複数購入割引有》

【7/11 22時販売】《限定15石》通常29,800円のフォレストグリーン中宝ソ付きや通常22,800円のカナリーイエローやアイスブルーなどトリートダイヤガチャ《複数購入割引有》 Sale price¥3,980
[7/ 22:00 JST Release] Indian Green Phantom Quartz (Multiple Purchase Discount Available)

[7/ 22:00 JST Release] Indian Green Phantom Quartz (Multiple Purchase Discount Available) Sale price¥1,980
Limited 5 Stones: Synthetic Alexandrite Gacha (Princess Cut, 3.5-4.5mm) (Multi-Buy Discount Available)

Limited 5 Stones: Synthetic Alexandrite Gacha (Princess Cut, 3.5-4.5mm) (Multi-Buy Discount Available) Sale price¥18,800
[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¥10,000
Kochi Prefecture Blood Red Coral Loose (6-8mm / damaged by water pressure during retrieval) "Multiple purchase discount available"

Kochi Prefecture Blood Red Coral Loose (6-8mm / damaged by water pressure during retrieval) "Multiple purchase discount available" Sale price¥12,800
Kochi Prefecture Blood Red Coral Loose (6-8mm / damaged by water pressure during retrieval) "Multiple purchase discount available"

Kochi Prefecture Blood Red Coral Loose (6-8mm / damaged by water pressure during retrieval) "Multiple purchase discount available" Sale price¥8,800
[On sale July 4th at 10 PM] "Hong Kong Procurement - Limited to 24 Stones" Vibrant Lazurite Loose Stones from Pakistan "Bulk Purchase Discount Available"

[On sale July 4th at 10 PM] "Hong Kong Procurement - Limited to 24 Stones" Vibrant Lazurite Loose Stones from Pakistan "Bulk Purchase Discount Available" Sale price¥7,980
[Sale starts 10 PM on July 3] 《Limited to 14 stones》Fluorescent diamonds in rare colors such as white, orange, and green《Bulk purchase discount available》

[Sale starts 10 PM on July 3] 《Limited to 14 stones》Fluorescent diamonds in rare colors such as white, orange, and green《Bulk purchase discount available》 Sale price¥3,980
[On sale July 5th at 10 PM] Limited to 17 stones! Brazilian Hematite in Quartz / Actinolite in Quartz (including those with identification certificates) - 1 stone loose. Multiple purchase discount available.

[On sale July 5th at 10 PM] Limited to 17 stones! Brazilian Hematite in Quartz / Actinolite in Quartz (including those with identification certificates) - 1 stone loose. Multiple purchase discount available. Sale price¥3,980
[On sale July 4th at 10 PM] "Hong Kong Procurement - Limited to 24 Stones" Vibrant Lazurite Loose Stones from Pakistan "Bulk Purchase Discount Available"

[On sale July 4th at 10 PM] "Hong Kong Procurement - Limited to 24 Stones" Vibrant Lazurite Loose Stones from Pakistan "Bulk Purchase Discount Available" Sale price¥5,980
[Sales start July 3rd, 10 PM JST] "Hong Kong Sourced - Limited 12 Stones" Pakistan Blue Tint Axinite Gacha - 1 Loose Stone (Multiple Purchase Discount Available)

[Sales start July 3rd, 10 PM JST] "Hong Kong Sourced - Limited 12 Stones" Pakistan Blue Tint Axinite Gacha - 1 Loose Stone (Multiple Purchase Discount Available) Sale price¥3,980
[Sale 6/] 10:00 PM - Limited 11 Stones - Sri Lankan Pink Sapphire (Emerald Cut) Average 0.73ct (Multiple Purchase Discount Available)

[Sale 6/] 10:00 PM - Limited 11 Stones - Sri Lankan Pink Sapphire (Emerald Cut) Average 0.73ct (Multiple Purchase Discount Available) Sale price¥5,980
[On Sale June 6th at 10 PM JST] "Limited 13 Stones" Fluorite Gacha including flawed Koshu cut gemstones "Bulk Purchase Discount Available"

[On Sale June 6th at 10 PM JST] "Limited 13 Stones" Fluorite Gacha including flawed Koshu cut gemstones "Bulk Purchase Discount Available" Sale price¥4,980
[On sale May 10th, 10 PM JST] 6 Limited Pieces - Brazilian Mica in Rose Quartz (One stone), Multiple Purchase Discount Available

[On sale May 10th, 10 PM JST] 6 Limited Pieces - Brazilian Mica in Rose Quartz (One stone), Multiple Purchase Discount Available Sale price¥2,980
[On Sale June 6th at 10 PM JST] "Limited 13 Stones" Fluorite Gacha including flawed Koshu cut gemstones "Bulk Purchase Discount Available"

[On Sale June 6th at 10 PM JST] "Limited 13 Stones" Fluorite Gacha including flawed Koshu cut gemstones "Bulk Purchase Discount Available" Sale price¥3,980
[6/ 10 PM JST release] 《Limited 10 Stones》 Iolite Gacha featuring Koshu-Kiseki-Kiriko plusthree 《Bulk purchase discount available》

[6/ 10 PM JST release] 《Limited 10 Stones》 Iolite Gacha featuring Koshu-Kiseki-Kiriko plusthree 《Bulk purchase discount available》 Sale price¥3,980
【Sale starts 10PM on June 27th】《Limited 8 Stones》Myanmar Black Spinel (B Grade)《Multiple Purchase Discount Available》

【Sale starts 10PM on June 27th】《Limited 8 Stones》Myanmar Black Spinel (B Grade)《Multiple Purchase Discount Available》 Sale price¥1,980
[On sale June 28th at 10 PM] Brazilian Paraiba Tourmaline Gacha with sorting results (CuO: 2.1%, MnO: 2.2%), usually ¥45,800, now with a chance to win one of 18 limited stones. (Multiple purchase discount available)

[On sale June 28th at 10 PM] Brazilian Paraiba Tourmaline Gacha with sorting results (CuO: 2.1%, MnO: 2.2%), usually ¥45,800, now with a chance to win one of 18 limited stones. (Multiple purchase discount available) Sale price¥9,800
[Sale on June 27th at 10 PM] Limited to 2 Stones: Myanmar Red Spinel (Pear Shape approx. 4x3mm) - Multi-Purchase Discount Available

[Sale on June 27th at 10 PM] Limited to 2 Stones: Myanmar Red Spinel (Pear Shape approx. 4x3mm) - Multi-Purchase Discount Available Sale price¥9,800
See more products eligible for multiple purchase discounts

Bungo and Alchemist

K9 ブルーサファイア・ダイヤモンドペンダントトップ（ネックレストップ） 鑑別書

[Published on 22602650] [Colorful] K9 Blue Sapphire Pendant Top (Necklace Top) Sale price¥18,800
K9 ルビー・ダイヤモンドペンダントトップ（ネックレストップ） 鑑別書

[Listed as 22602651] [Colorful] K9 Ruby Pendant Top (Necklace Top) Sale price¥19,800
Pt900ブラックオパール 3.17ct・ダイヤモンド0.105ctペンダントトップ（ネックレストップ） 鑑別書

[Listed in 22602653] [Colorflee] Black Opal 3.17ct Pendant Top (Necklace Top) Sale price¥128,000
Pt900 ブルーサファイア 2.67ct・ダイヤモンド0.75ctペンダントトップ（ネックレストップ）鑑別書

[Item 22602648] [Colorflee] Pt900 Blue Sapphire 2.67ct Pendant Top (Necklace Top) Sale price¥228,000
Pt850 ブルーサファイア 0.66ct・ダイヤモンド0.19ctリング 鑑別書

[22602646 listed] [Karafuri] Pt850 Blue Sapphire 0.66ct Ring Sale price¥59,800
Pt900 ダイヤモンド原石 2.733ct・ダイヤモンド0.68ctリング 鑑別書

[On sale July 13th, 10 PM JST] [COLORFULI] Pt900 Rough Diamond 2.733ct / Diamond 0.68ct Ring with Appraisal Card Sale price¥198,000
K18スライスダイヤモンド・イエローサファイア ピアス

[On sale July 13th at 10 PM] [Colorful] K18 Slice Diamond and Yellow Sapphire Earrings with Certificate Sale price¥55,800
Pt900 ブラックオパール 0.58ct ペンダントトップ（ネックレストップ）鑑別書

[On sale July 11th, 10 PM JST] [Colorfrui] Pt900 Black Opal 0.58ct Pendant Top (Necklace Top) with Identification Card Sale price¥55,800
Pt900 ブラックオパール 0.66ct ペンダントトップ（ネックレストップ） 鑑別書

[On Sale July 11th at 10 PM] [Colorfri] Pt900 Black Opal 0.66ct Pendant Top (Necklace Top) with Identification Card Sale price¥55,800
Pt900 ルビー 0.60ct・ダイヤモンド0.24ctリング 鑑別書

[Listed on 22602645] [Colorful] Pt900 Ruby 0.6ct Ring Sale price¥98,000
K18 合成オレンジサファイア リング 鑑別書

[Posted on 22602644] [Calafri] K18 Synthetic Sapphire Ring Sale price¥45,800
Pt950 ムーンストーンキャッツアイ 1.5ct ペンダントトップ（ネックレストップ） 鑑別書

[Published on 22602643] [CALAFULI] Pt950 Moonstone Cat's Eye 1.5ct Pendant Top Sale price¥45,800
Pt950 ムーンストーンキャッツアイ 3ct ・ムーンストーンキャッツアイリング 鑑別書

[Listed as 22602642][Colorful] Pt950 Moonstone Cat's Eye 3ct Ring Sale price¥79,800
K18WG ルビー 0.94ct・ダイヤモンド0.66ctペンダントトップ（ネックレストップ）　 鑑別書

[Published on 22602611] [Carafur] K18WG Ruby 0.94ct Pendant Top (Necklace Top) Sale price¥158,000
Pt900 ブルーサファイア 0.43ct・ダイヤモンド0.44ctリング 鑑別書

[Item ID: 22602630] [Karafuri] Pt900 Blue Sapphire 0.43ct Ring Sale price¥98,000
K18 ペリステライト 0.66ct・ダイヤモンドペンダントトップ（ネックレストップ） 鑑別書

[22602614 Listed] [Calafli] K18 Peristerite 0.66ct Pendant Top (Necklace Top) Sale price¥29,800
K18 ブルーサファイア 1.89ct・ダイヤモンド0.74ctリング 鑑別書

[On sale June 27th at 10 PM] [Colorflee] K18 Blue Sapphire 1.89ct / Diamond 0.74ct Ring with Appraisal Report Sale price¥298,000
Pt900グロッシュラーガーネット 1.38ct・ダイヤモンド0.13ctリング 鑑別書

[On sale 6/27 10 PM] [Colorful] Pt900 Grossular Garnet 1.38ct and Diamond 0.13ct Ring with Appraisal Sale price¥98,000
Pt950 アレキサンドライト 0.08ct・ダイヤモンド0.25ctリング 鑑別カード

[On sale June 30th at 10 PM] Colorful Pt950 Alexandrite 0.08ct Diamond 0.25ct Ring with Identification Card Sale price¥98,000
K18 白蝶真珠（白蝶パール） 鳥モチーフ ペンダントトップ（ネックレストップ） 鑑別書

[Sale on 6/22 at 10 PM] Colorful K18 White South Sea Pearl, 0.17ct Diamond, Ruby, Sapphire, Emerald Bird Motif Pendant Top (Necklace Top) with Appraisal Report Sale price¥198,000
K18 ルビー 0.44ct・ダイヤモンド0.18ctリング 鑑別書

[Sale starts June 22nd, 10 PM] Colorful K18 Ruby 0.44ct & Diamond 0.18ct Ring with Appraisal Report Sale price¥148,000
Pt900/K18 ルビー 0.28ct・ダイヤモンド0.20ct リング 鑑別書

[Sale starts 10 PM, June 22] [Colorfuri] Pt900/K18 Ruby 0.28ct / Diamond 0.20ct Ring with Appraisal Report Sale price¥128,000
K18 ブルーサファイア・ダイヤモンドリング 鑑別書

[On sale June 27, 10 PM] Colorful K18 Blue Sapphire and Diamond Ring with Certificate Sale price¥128,000
K18WG ダイヤモンド ペンダントトップ（ネックレストップ）

[Available June 18th at 10 PM] [Colorful] K18WG Diamond 1.03ct Pendant Top Sale price¥128,000
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jewelry

K18スライスダイヤモンド・イエローサファイア ピアス
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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 publishes "Gemstone Encyclopedia"

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.