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[Deadline: Tuesday, Oct 13, 10:00 AM: Lottery Sale] A selection of 12 items including an Alexandrite feature
October Birthstones: Opal and Tourmaline
Gemstone Encyclopedia 3D Stickers Vol. 4 "Sakura In-cut" New release on Friday, 10/2 at 10:00 PM 🌸
Carafril (Karatz Flea Market)
KARATZ Books
Custom-made jewelry with stones

NEWS

2026/10/17

【抽選販売：10/21(水)午前10時〆】珍しいインクル入りのベキリーブルーガーネットやオーソクレース、GIA鑑別書付き非加熱サファイアなど13点

2026/07/07

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

【Lottery Sale】

coming soon 【12564604掲載】オーソクレース 0.724ctルース

[Deadline: Wed, 10/21 at 10 AM: Lottery Sale] Graphite in Orthoclase 0.724ct Loose Stone, GGL Certified Sale price¥18,800
coming soon 【12564644掲載】クロムトルマリン 0.664ctルース

[Deadline: Wed, Oct 21, 10:00 AM: Lottery Sale] Chrome Tourmaline 0.664ct Loose Gemstone (with Pyrite Inclusions) Sale price¥22,800
coming soon [10/21 (Wed) 10:00 AM Deadline: Lottery Sale] Bekily Blue Garnet (Color-Change Garnet) 1.026ct Loose Stone

[10/21 (Wed) 10:00 AM Deadline: Lottery Sale] Bekily Blue Garnet (Color-Change Garnet) 1.026ct Loose Stone Sale price¥158,000
coming soon [Deadline: Wed, Oct 21, 10:00 AM: Lottery Sale] Greenland White Sapphire (Snow Sapphire) 1.258ct Loose Gemstone with CGL Appraisal & Analysis Data

[Deadline: Wed, Oct 21, 10:00 AM: Lottery Sale] Greenland White Sapphire (Snow Sapphire) 1.258ct Loose Gemstone with CGL Appraisal & Analysis Data Sale price¥39,800
coming soon 【12564368掲載】スリランカ産非加熱パープルサファイア 0.620ctルース

[Deadline: Wed, Oct 21, 10:00 AM: Lottery Sale] Sri Lankan Unheated Purple Sapphire (Color-shift type) 0.620ct Loose Stone GIA Sale price¥79,800
coming soon 【12564603掲載】ドロマイト 0.883ctルース

[Deadline: Wed, Oct 21, 10:00 AM: Lottery Sale] Dolomite 0.883ct Loose Stone Sale price¥69,800
coming soon [Deadline: Wed, 10/21, 10:00 AM: Lottery Sale] Sri Lankan Purple Spinel 1.213ct Loose Gemstone with Appraisal Report

[Deadline: Wed, 10/21, 10:00 AM: Lottery Sale] Sri Lankan Purple Spinel 1.213ct Loose Gemstone with Appraisal Report Sale price¥25,800
coming soon 【12564655掲載】スリランカ産非加熱サファイア 0.430ctルース

[10/21 (Wed) 10:00 AM Deadline: Lottery Sale] Sri Lankan Unheated Sapphire 0.430ct Loose Stone GIA Sale price¥69,800
coming soon 【12564656掲載】スリランカ産非加熱サファイア 0.820ctルース

[Deadline: Wed, Oct 21, 10:00 AM: Lottery Sale] Sri Lankan Unheated Sapphire 0.820ct Loose Stone GIA Sale price¥59,800
coming soon 【12564657掲載】スリランカ産非加熱サファイア 0.900ctルース

[10/21 (Wed) 10:00 AM Deadline: Lottery Sale] Sri Lankan Unheated Sapphire 0.900ct Loose Stone GIA Sale price¥69,800
coming soon [Deadline: Wed, Oct 21, 10:00 AM: Lottery Sale] Indian Alexandrite 0.160ct Loose Stone GIA

[Deadline: Wed, Oct 21, 10:00 AM: Lottery Sale] Indian Alexandrite 0.160ct Loose Stone GIA Sale price¥79,800
coming soon [10/21 (Wed) 10:00 AM Deadline: Lottery Sale] Brazilian Alexandrite 0.210ct Loose Stone GIA

[10/21 (Wed) 10:00 AM Deadline: Lottery Sale] Brazilian Alexandrite 0.210ct Loose Stone GIA Sale price¥98,000
coming soon 【12565144掲載】ブラジル産グリーントルマリン 5.362ctルース

[10/21 (Wed) 10:00 AM Deadline: Lottery Sale] Brazilian Green Tourmaline 5.362ct Loose Stone Sale price¥98,000

10/17 (Sat) New & Updated

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
Authentic Gem Encyclopedia 3D Stickers Vol. 1: The Big Five Gems

Authentic Gem Encyclopedia 3D Stickers Vol. 1: The Big Five Gems Sale price¥660
Benitoite Gradation 6 Stone Set (2.0mm, Round Cut, Including Top Quality) 《Multiple Purchase Discount Available》

Benitoite Gradation 6 Stone Set (2.0mm, Round Cut, Including Top Quality) 《Multiple Purchase Discount Available》 Sale price¥79,800
coming soon [Available 10/12 at 10 PM] 《Limited to 1 stone》 FANCY LIGHT PINK 2.9mm/0.092ct FANCY Color Pink Diamond (Sorting report included) 《Multi-buy discount available》

[Available 10/12 at 10 PM] 《Limited to 1 stone》 FANCY LIGHT PINK 2.9mm/0.092ct FANCY Color Pink Diamond (Sorting report included) 《Multi-buy discount available》 Sale price¥33,000
coming soon [Available 10/12 at 10 PM] 《Limited to 1 stone》 FANCY LIGHT PINK 2.9mm/0.092ct FANCY Color Pink Diamond (Sorting report included) 《Multi-buy discount available》

[Available 10/12 at 10 PM] 《Limited to 1 stone》 FANCY LIGHT PINK 2.9mm/0.092ct FANCY Color Pink Diamond (Sorting report included) 《Multi-buy discount available》 Sale price¥33,000
coming soon [Available 10/12 at 10 PM] 《Limited to 1 stone》 FANCY LIGHT PINK 2.9mm/0.092ct FANCY Color Pink Diamond (Sorting report included) 《Multi-buy discount available》

[Available 10/12 at 10 PM] 《Limited to 1 stone》 FANCY LIGHT PINK 2.9mm/0.092ct FANCY Color Pink Diamond (Sorting report included) 《Multi-buy discount available》 Sale price¥8,800
coming soon 【On sale 10/ 22:00】《Limited to 13 stones》Tanzania Winza Sapphire, average 0.29ct 《Multiple purchase discount available》

【On sale 10/ 22:00】《Limited to 13 stones》Tanzania Winza Sapphire, average 0.29ct 《Multiple purchase discount available》 Sale price¥5,980
coming soon 【Available 10/22 at 22:00】《Limited to 15 stones》Andalusite Gacha, 0.44ct average《Multi-buy discounts available》

【Available 10/22 at 22:00】《Limited to 15 stones》Andalusite Gacha, 0.44ct average《Multi-buy discounts available》 Sale price¥2,980
coming soon [10/18 10:00 PM Release] Tanzanian Mandarin Garnet 4.5mm/0.529ct Loose Stone with Identification Report

[10/18 10:00 PM Release] Tanzanian Mandarin Garnet 4.5mm/0.529ct Loose Stone with Identification Report Sale price¥29,800
coming soon ブラジル産マイクロライト 0.066ctルース

[10/18 10:00 PM Release] Brazilian Microlite 0.066ct Loose Gemstone with Identification Report Sale price¥12,800
coming soon ブラジル産マイクロライト 0.055ctルース

[Oct 18, 10:00 PM Sale] Brazilian Microlite 0.055ct Loose Stone with Identification Report Sale price¥25,800
coming soon [Available 10/18 at 22:00] Brazilian Microlite 0.058ct Loose Gemstone with Identification Report

[Available 10/18 at 22:00] Brazilian Microlite 0.058ct Loose Gemstone with Identification Report Sale price¥22,800
coming soon ミャンマー産ポードレッタイト 0.065ctルース

[Available 10/18 at 22:00] Myanmar Poudretteite 0.065ct Loose Gemstone with Identification Report Sale price¥25,800
coming soon ミャンマー産ポードレッタイト 0.040ctルース

[10/18 10:00 PM Release] 0.040ct Myanmar Poudretteite Loose Stone with Appraisal Report Sale price¥19,800
coming soon ミャンマー産ポードレッタイト 0.045ctルース

[Available Oct 18, 10 PM] Myanmar Pezzottaite 0.045ct Loose Gemstone with Identification Report Sale price¥18,800
coming soon スペイン産コバルトカルサイト 0.253ctルース

0.289 ct Loose Spanish Cobalt Calcite with Certificate Sale price¥25,800
coming soon スペイン産コバルトカルサイト 0.289ctルース

Spanish Cobalt Calcite 0.253ct Loose Stone with Certificate Sale price¥22,800
coming soon [Available 10/18 at 10 PM] Ruby 0.185ct Loose Stone with Appraisal Report

[Available 10/18 at 10 PM] Ruby 0.185ct Loose Stone with Appraisal Report Sale price¥12,800
coming soon 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¥29,800
coming soon [Item 22602836] [Carafuri] Pt900/Pt850 Conch Pearl (with flame structure) 0.54ct, Diamond 0.30ct Pendant (Necklace) with Appraisal Report

[Item 22602836] [Carafuri] Pt900/Pt850 Conch Pearl (with flame structure) 0.54ct, Diamond 0.30ct Pendant (Necklace) with Appraisal Report Sale price¥158,000
coming soon [Available 10/19 at 10 PM] [Color-Full] 18K Gold Mother-of-Pearl Cat Motif Pendant Top with 0.01ct Diamond (Includes Appraisal Report)

[Available 10/19 at 10 PM] [Color-Full] 18K Gold Mother-of-Pearl Cat Motif Pendant Top with 0.01ct Diamond (Includes Appraisal Report) Sale price¥69,800
coming soon 【Available Oct 19, 10 PM】【Colori】K18 Pyramid Cut Diamond 0.731ct Ring with Appraisal Report

【Available Oct 19, 10 PM】【Colori】K18 Pyramid Cut Diamond 0.731ct Ring with Appraisal Report Sale price¥128,000
coming soon [Item No. 22602841] [Colori] Pt900 Chrysoberyl Cat's Eye 2.35ct Diamond 0.31ct Ring with Appraisal Report

[Item No. 22602841] [Colori] Pt900 Chrysoberyl Cat's Eye 2.35ct Diamond 0.31ct Ring with Appraisal Report Sale price¥98,000
coming soon Mexican water opal loose stone 0.199ct

Mexican water opal loose stone 0.199ct Sale price¥15,800
coming soon [Item No. 12560796] Brazilian Elestial Amethyst 1.965ct Loose Stone

[Item No. 12560796] Brazilian Elestial Amethyst 1.965ct Loose Stone Sale price¥18,800
coming soon Zambian Emerald 0.188ct Loose Stone

Zambian Emerald 0.188ct Loose Stone Sale price¥9,800
coming soon Brazilian Mint-Colored Tourmaline 0.294ct Loose Stone

Brazilian Mint-Colored Tourmaline 0.294ct Loose Stone Sale price¥15,800
coming soon [12560799 Listed] Brazilian Elestial Amethyst 0.819ct Loose Stone

[12560799 Listed] Brazilian Elestial Amethyst 0.819ct Loose Stone Sale price¥9,800
coming soon Mozambique Almandine Garnet 1.144ct Loose Stone

Mozambique Almandine Garnet 1.144ct Loose Stone Sale price¥15,800
coming soon [12560786] Nigerian Green Beryl 0.621ct Loose Stone

[12560786] Nigerian Green Beryl 0.621ct Loose Stone Sale price¥8,800
[10/22, 10:00 PM Sale] <limited to stones> Sky Blue Topaz (Round approx. 8mm, only one stone is approx. 10mm) <multiple purchase discount available></multiple></limited>

[10/22, 10:00 PM Sale] Sky Blue Topaz (Round approx. 8mm, only one stone is approx. 10mm) Sale price¥2,580
【12564642掲載】コロンビア産トラピッチェエメラルド 1.036ctルース

[Item 12564642] Colombian Trapiche Emerald 1.036ct Loose Stone Sale price¥69,800
【12564632掲載】パキスタン産バナジウムスフェーン 1.579ctルース

[Item 12564632] Pakistani Vanadium Sphene 1.579ct Loose Gemstone Sale price¥69,800
【12564457掲載】シーブルーカルセドニー 2.001ctルース

[Item 12564457] Sea Blue Chalcedony 2.001ct Loose Stone Sale price¥18,800
【12564468掲載】オーストラリア産ブラックオパール 0.306ctルース

[Item 12564468] Australian Black Opal 0.306ct Loose Stone Sale price¥25,800
Sold out 【12564477掲載】ブラジル産ライモナイトインブルートパーズ 5.124ctルース

[Item 12564477] 5.124ct Limonite-in-Blue Topaz Loose Gemstone from Brazil
Show more

List of new arrivals

[Ref: 12564456] Mozambique Aquamarine 0.837ct Loose Stone

[Ref: 12564456] Mozambique Aquamarine 0.837ct Loose Stone Sale price¥9,800
【12564457掲載】シーブルーカルセドニー 2.001ctルース

[Item 12564457] Sea Blue Chalcedony 2.001ct Loose Stone Sale price¥18,800
【12564468掲載】オーストラリア産ブラックオパール 0.306ctルース

[Item 12564468] Australian Black Opal 0.306ct Loose Stone Sale price¥25,800
【12564632掲載】パキスタン産バナジウムスフェーン 1.579ctルース

[Item 12564632] Pakistani Vanadium Sphene 1.579ct Loose Gemstone Sale price¥69,800
【12564642掲載】コロンビア産トラピッチェエメラルド 1.036ctルース

[Item 12564642] Colombian Trapiche Emerald 1.036ct Loose Stone Sale price¥69,800
[Item 12564407] Stibiotantalite from Afghanistan, 0.200ct loose stone

[Item 12564407] Stibiotantalite from Afghanistan, 0.200ct loose stone Sale price¥45,800
[Item 12564406] Stibiotantalite from Afghanistan, 0.186ct loose stone

[Item 12564406] Stibiotantalite from Afghanistan, 0.186ct loose stone Sale price¥45,800
[Item No. 12564322] Burmese Red Spinel 0.176ct Loose Gemstone

[Item No. 12564322] Burmese Red Spinel 0.176ct Loose Gemstone Sale price¥17,800
[Item 12564569] Russian Non-Oiled Emerald 0.121ct Loose Gemstone

[Item 12564569] Russian Non-Oiled Emerald 0.121ct Loose Gemstone Sale price¥49,800
[Item 12564624] Tanzanian Cobalt Spinel 0.094ct Loose Gemstone

[Item 12564624] Tanzanian Cobalt Spinel 0.094ct Loose Gemstone Sale price¥47,800
[Item 12564627] Bekily Blue Garnet (Color-Change Garnet) from Madagascar, 0.620ct Loose Stone

[Item 12564627] Bekily Blue Garnet (Color-Change Garnet) from Madagascar, 0.620ct Loose Stone Sale price¥69,800
[Item 12564630] Black Sapphire 5.833ct Loose Stone

[Item 12564630] Black Sapphire 5.833ct Loose Stone Sale price¥69,800
[Item 12564325] Kenya Gold Sheen Sapphire (Star Sapphire) 0.477ct Loose Gemstone

[Item 12564325] Kenya Gold Sheen Sapphire (Star Sapphire) 0.477ct Loose Gemstone Sale price¥35,800
Australian Black Opal 0.421ct Loose Stone

Australian Black Opal 0.421ct Loose Stone Sale price¥18,800
[Deadline: Sat, Oct 3, 10 AM: Lottery Sale ①_07] Internally Flawless Diamond (H&C) 0.320ct Loose Stone (D, IF, 3Excellent H&C) GIA & CGL Certified

[Deadline: Sat, Oct 3, 10 AM: Lottery Sale ①_07] Internally Flawless Diamond (H&C) 0.320ct Loose Stone (D, IF, 3Excellent H&C) GIA & CGL Certified Sale price¥148,000
[10/3 (Sat) 10:00 AM Deadline: Lottery Sale ①_02] Diamond (H&C) 4.3mm/0.318ct Loose Stone (H, SI-1, 3Excellent H&C) with CGL Certificate & Sarine Light Report

[10/3 (Sat) 10:00 AM Deadline: Lottery Sale ①_02] Diamond (H&C) 4.3mm/0.318ct Loose Stone (H, SI-1, 3Excellent H&C) with CGL Certificate & Sarine Light Report Sale price¥45,800
【12564633掲載】パキスタン産バナジウムスフェーン 1.690ctルース

[Available 10/14 at 22:00] Pakistani Vanadium Sphene 1.690ct Loose Gemstone with Identification Report Sale price¥69,800
Pt900 ピンクサファイア0.214ct・ダイヤモンド0.10ctリング鑑別書

[Item 22602724] [Colori] Pt900 Pink Sapphire & 0.10ct Diamond Ring with Appraisal Report Sale price¥79,800
K18WG ルビー0.34ct・ ダイヤモンド0.02ctリング鑑別書

[Ref: 22602726] [Colorful] K18WG Ruby & 0.02ct Diamond Ring with Appraisal Report Sale price¥98,000
Pt900/Pt850 ブラックダイヤモンド0.70ct・ダイヤモンド0.53ctペンダント（ネックレス）鑑別書

[Item 22602733] [Colorfully] Pt900/Pt850 Black Diamond and Diamond 0.53ct Pendant (Necklace) with Identification Report Sale price¥98,000
Pt900 カナリーイエロートルマリン1.42ct・ダイヤモンド0.15ctペンダントトップ（ネックレストップ）鑑別書

[Item 22602731] [Colorifull] Pt900 Canary Yellow Tourmaline & 0.15ct Diamond Pendant Top (Necklace Top) with Identification Report Sale price¥158,000
K18WG エメラルド0.15ct・ダイヤモンド0.12ctペンダントトップ（ネックレストップ）鑑別書

[Item #22602732][Colori] K18WG Emerald & 0.12ct Diamond Pendant Top (Necklace Top) with Appraisal Report Sale price¥39,800
Pt900 ルベライト1.308ct・ダイヤモンド0.54ctリング 鑑別書

[Posted on 22602707] [Colorful] Pt900 Rubellite 1.308ct Ring Sale price¥158,000
マダガスカル産サファイア 0.385ctルース

[Item 12564248] Madagascar Sapphire 0.385ct Loose Stone Sale price¥18,800
ブラジル産ライモナイトイントパーズ 3.194ctルース

[Available 10/10 at 22:00] Brazilian Limonite-in-Topaz 3.194ct Loose Gemstone Sale price¥7,980
コンゴ産ヘミモルファイト 3.363ctルース

[Available 10/10 at 10 PM] Hemimorphite from Congo, 3.363ct loose stone Sale price¥18,800
ブラジル産イエローベリル 0.952ctルース

[Available 10/10 at 10 PM] Brazilian Yellow Beryl 0.952ct Loose Gemstone Sale price¥14,800
マダガスカル産アパタイト 0.300ctルース

[Available Oct 10, 10:00 PM] Madagascar Apatite 0.300ct Loose Stone Sale price¥8,800
トルコ産ダイオプサイド 0.450ctルース

[10/10 10:00 PM Release] Turkish Diopside 0.450ct Loose Stone Sale price¥9,800
インド産アイオライトサンストーン 1.320ctルース

[Available 10/12 at 10 PM] Indian Iolite Sunstone 1.320ct Loose Gemstone Sale price¥9,800
インド産アイオライトサンストーン 1.225ctルース

[Available 10/12 at 10 PM] Indian Iolite Sunstone 1.225ct Loose Gemstone Sale price¥9,800
インド産アイオライトサンストーン 1.113ctルース

[Available Oct 12, 10 PM] Indian Iolite Sunstone 1.113ct Loose Gemstone Sale price¥11,800
インド産アイオライトサンストーン 1.064ctルース

[Available 10/12 at 10:00 PM] Indian Iolite Sunstone 1.064ct Loose Gemstone Sale price¥9,800
インド産アイオライトサンストーン 1.232ctルース

[10/11 10 PM Release] Indian Iolite Sunstone 7.0mm/1.232ct Loose Gemstone Sale price¥8,800
スリランカ産ムーンストーン 0.922ctルース

[On sale Oct 15, 10 PM] Sri Lankan Moonstone 0.922ct Loose Gemstone Sale price¥12,800
スリランカ産ムーンストーン 0.798ctルース

[Available Oct 15 at 10 PM] Sri Lankan Uva Moonstone 6.2mm/0.798ct Loose Gemstone Sale price¥12,800
スリランカ産ムーンストーン 0.755ctルース

[On sale 10/15 at 22:00] Moonstone from Uva, Sri Lanka, 6.2mm/0.755ct loose stone Sale price¥12,800
【12564588掲載】スリランカ産ムーンストーン 0.740ctルース

[On sale 10/12 at 22:00] Sri Lankan Uva Moonstone 0.740ct Loose Stone Sale price¥14,800
パキスタン産ヴェイリネナイト 0.075ctルース

【Available 10/12 at 10:00 PM】 Pakistani Vayrynenite 0.075ct Loose Stone Sale price¥16,800
パキスタン産ヴェイリネナイト 0.067ctルース

[Available 10/12 at 10 PM] Pakistani Vayrynenite 0.067ct Loose Gemstone Sale price¥14,800
パキスタン産ヴェイリネナイト 0.064ctルース

[10/12 10 PM Release] Vayrynenite from Pakistan, 0.064ct Loose Gemstone Sale price¥14,800
パキスタン産ヴェイリネナイト 0.099ctルース

[10/12 10 PM Release] Pakistani Väyrynenite 0.099ct Loose Gemstone Sale price¥22,800
タンザニア産サンストーン（イリュージョンサンストーン） 4.124ctルース

[Available 10/12 at 10 PM] Tanzanian Sunstone (Illusion Sunstone) 4.124ct Loose Gemstone Sale price¥15,800
See more list of new arrivals

《Products eligible for multiple purchase discount》

Benitoite Gradation 6 Stone Set (2.0mm, Round Cut, Including Top Quality) 《Multiple Purchase Discount Available》

Benitoite Gradation 6 Stone Set (2.0mm, Round Cut, Including Top Quality) 《Multiple Purchase Discount Available》 Sale price¥79,800
[10/22, 10:00 PM Sale] <limited to stones> Sky Blue Topaz (Round approx. 8mm, only one stone is approx. 10mm) <multiple purchase discount available></multiple></limited>

[10/22, 10:00 PM Sale] Sky Blue Topaz (Round approx. 8mm, only one stone is approx. 10mm) Sale price¥2,580
[Available 9/22 at 22:00] 《7 Stones Only》 Moss Green Beryl Gacha (Oval Cut) Avg. 1.16ct 《Multi-buy Discount Available》

[Available 9/22 at 22:00] 《7 Stones Only》 Moss Green Beryl Gacha (Oval Cut) Avg. 1.16ct 《Multi-buy Discount Available》 Sale price¥3,980
[9/22 8:00 PM Sale] Fluorite Gacha: Win a Koshu Kiseki Kiriko (Limited to 16 stones) [Multi-purchase discount available]

[9/22 8:00 PM Sale] Fluorite Gacha: Win a Koshu Kiseki Kiriko (Limited to 16 stones) [Multi-purchase discount available] Sale price¥2,980
[Available 9/22, 10 PM] 《11 Stones Limited》 Tourmaline Gacha (includes Brazilian Paraiba Tourmaline) 《Multi-purchase discount available》

[Available 9/22, 10 PM] 《11 Stones Limited》 Tourmaline Gacha (includes Brazilian Paraiba Tourmaline) 《Multi-purchase discount available》 Sale price¥3,980
【10/10 10:00 PM Release】《Limited to 3 stones》 Nigerian Aquamarine Gacha (including Santa Maria color / cut by KEN) (Includes 1 KEN garnet) 《Multiple purchase discounts available》

【10/10 10:00 PM Release】《Limited to 3 stones》 Nigerian Aquamarine Gacha (including Santa Maria color / cut by KEN) (Includes 1 KEN garnet) 《Multiple purchase discounts available》 Sale price¥3,980
[On Sale 10/10 at 22:00] 《Limited to 15 stones》 Jaipur-cut Carved Gem Gacha 《Multi-purchase discount available》

[On Sale 10/10 at 22:00] 《Limited to 15 stones》 Jaipur-cut Carved Gem Gacha 《Multi-purchase discount available》 Sale price¥2,980
【9/ 22:00 Release】 《Limited to 13 stones》 Bicolor Sapphire, Avg 0.27ct 《Multi-buy discount available》

【9/ 22:00 Release】 《Limited to 13 stones》 Bicolor Sapphire, Avg 0.27ct 《Multi-buy discount available》 Sale price¥7,980
[Available Oct 9, 10:00 PM] &lt;<limited quantity>&gt; Lab-Grown Diamond Cabochon Loose Stone (1pc) (CVD / 2.4-2.7mm) &lt;<multi-purchase discount available>&gt;</multi-purchase></limited>

[Available Oct 9, 10:00 PM] <> Lab-Grown Diamond Cabochon Loose Stone (1pc) (CVD / 2.4-2.7mm) <> Sale priceFrom ¥5,280
[Available Oct 12, 10 PM] <limited to stones> Madagascar Blue Sapphire Loose Stone (Cabochon cut, avg. 0.70ct) <multi-buy discount available></multi-buy></limited>

[Available Oct 12, 10 PM] Madagascar Blue Sapphire Loose Stone (Cabochon cut, avg. 0.70ct) Sale price¥1,980
[Available 10/3 at 10:00 PM] <limited to stones> Chic-colored FANCY color diamond gacha, sourced in Hong Kong, 1 loose stone (avg. 0.35ct) <multi-purchase discount available></multi-purchase></limited>

[Available 10/3 at 10:00 PM] Chic-colored FANCY color diamond gacha, sourced in Hong Kong, 1 loose stone (avg. 0.35ct) Sale price¥8,800
[Oct 3, 10:00 PM Release] 《21 Stones Only》 Chic-colored FANCY color diamond gacha, 1 loose stone (0.16ct average), sourced in Hong Kong 《Multi-purchase discounts available》

[Oct 3, 10:00 PM Release] 《21 Stones Only》 Chic-colored FANCY color diamond gacha, 1 loose stone (0.16ct average), sourced in Hong Kong 《Multi-purchase discounts available》 Sale price¥3,980
Brazilian Rainbow Aquamarine (Iridescent Aquamarine) Loose Stone (Heart Shape) (Multiple Purchase Discounts Available)

Brazilian Rainbow Aquamarine (Iridescent Aquamarine) Loose Stone (Heart Shape) (Multiple Purchase Discounts Available) Sale price¥5,980
[Available Oct 3, 10 PM] <limited stones> Moldavite loose stone from former Czechoslovakia (8x6mm, oval cut) <multi-purchase discount available></multi-purchase></limited>

[Available Oct 3, 10 PM] Moldavite loose stone from former Czechoslovakia (8x6mm, oval cut) Sale price¥7,980
Limited quantity: Mozambique grape garnet, 1 loose stone (4 x 6 mm, pear-shaped cut) Multiple purchase discounts available

Limited quantity: Mozambique grape garnet, 1 loose stone (4 x 6 mm, pear-shaped cut) Multiple purchase discounts available Sale price¥3,980
【10/3 22:00 Release】《15 stones limited》Illusion Tourmaline Gacha Loose Stone (3.0ct average) 《Multiple purchase discount available》

【10/3 22:00 Release】《15 stones limited》Illusion Tourmaline Gacha Loose Stone (3.0ct average) 《Multiple purchase discount available》 Sale price¥3,980
[Available 10/3 at 10 PM] <limited to stones> Mexican Cantera Opal Gacha - 1 Loose Stone (Avg. 2.5ct) <multi-purchase discounts available></multi-purchase></limited>

[Available 10/3 at 10 PM] Mexican Cantera Opal Gacha - 1 Loose Stone (Avg. 2.5ct) Sale price¥4,980
[10/2 10 PM Sale] &lt;<limited to stones>&gt; Brazilian Bicolor Amethyst Gacha - 1 loose stone (approx. 9x7mm) &lt;<multi-purchase discount available>&gt;</multi-purchase></limited>

[10/2 10 PM Sale] <> Brazilian Bicolor Amethyst Gacha - 1 loose stone (approx. 9x7mm) <> Sale price¥3,980
[Available 10/2 at 10 PM] 《Limited to 16 stones》 Indian Andesine-Labradorite Gacha Loose Stone, Ojiki-cut (Avg. 1.3ct) 《Multi-purchase discounts available》

[Available 10/2 at 10 PM] 《Limited to 16 stones》 Indian Andesine-Labradorite Gacha Loose Stone, Ojiki-cut (Avg. 1.3ct) 《Multi-purchase discounts available》 Sale price¥2,580
Brazilian Paraiba Tourmaline (Batalha Mine) Gacha 💎 Usually ¥45,800 With sorting, includes unheated. 《Multiple purchase discount available》

Brazilian Paraiba Tourmaline (Batalha Mine) Gacha 💎 Usually ¥45,800 With sorting, includes unheated. 《Multiple purchase discount available》 Sale price¥15,800
[Available 9/26 at 10 PM] <limited quantity> Hong Kong Sourcing Gacha (7 types including Tanzanite, Hauyne, Color-Change Sapphire, Bekily Blue Garnet, etc.) 1 stone (plus 1 Rainbow Obsidian) <multiple purchase discount available></multiple></limited>

[Available 9/26 at 10 PM] Hong Kong Sourcing Gacha (7 types including Tanzanite, Hauyne, Color-Change Sapphire, Bekily Blue Garnet, etc.) 1 stone (plus 1 Rainbow Obsidian) Sale price¥3,300
【9/4 10 PM Release】《Limited to 5 stones》Pyrite in Afghanite, approx. 2ct each《Multi-buy discount available》

【9/4 10 PM Release】《Limited to 5 stones》Pyrite in Afghanite, approx. 2ct each《Multi-buy discount available》 Sale price¥3,980
【Available 9/23 at 10 PM】《Limited to 6 stones》Rough Colombian Emerald (avg. 0.75ct) 《Multi-buy discount available》

【Available 9/23 at 10 PM】《Limited to 6 stones》Rough Colombian Emerald (avg. 0.75ct) 《Multi-buy discount available》 Sale price¥9,800
【9/22 22時販売】《限定10石》通常59,800円の甲州貴石切子plusthree「昴」ファイアオパールや29,800円のKEN氏コントラルスオパールのメキシコ産オパールガチャ1石（北海道産ロードクロサイト1石付き）《複数購入割引有》

【9/22 22時販売】《限定10石》通常59,800円の甲州貴石切子plusthree「昴」ファイアオパールや29,800円のKEN氏コントラルスオパールのメキシコ産オパールガチャ1石（北海道産ロードクロサイト1石付き）《複数購入割引有》 Sale price¥6,980
[9/22 10:00 PM Release] <limited to stones> 1 Imperial Topaz stone (includes Brazilian unheated sherry color) (comes with 1 London Blue Topaz stone) - Regular price 22,800 yen <multiple purchase discount available></multiple></limited>

[9/22 10:00 PM Release] 1 Imperial Topaz stone (includes Brazilian unheated sherry color) (comes with 1 London Blue Topaz stone) - Regular price 22,800 yen Sale price¥4,980
[Available 9/20 at 10 PM] 《Limited to 13 stones》 1 Raw Madagascar Apatite stone (avg. 3.8ct) 《Multi-buy discount available》

[Available 9/20 at 10 PM] 《Limited to 13 stones》 1 Raw Madagascar Apatite stone (avg. 3.8ct) 《Multi-buy discount available》 Sale price¥1,580
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Bungo and Alchemist

Pt900 ピンクサファイア0.214ct・ダイヤモンド0.10ctリング鑑別書

[Item 22602724] [Colori] Pt900 Pink Sapphire & 0.10ct Diamond Ring with Appraisal Report Sale price¥79,800
K18WG ルビー0.34ct・ ダイヤモンド0.02ctリング鑑別書

[Ref: 22602726] [Colorful] K18WG Ruby & 0.02ct Diamond Ring with Appraisal Report Sale price¥98,000
Pt900/Pt850 ブラックダイヤモンド0.70ct・ダイヤモンド0.53ctペンダント（ネックレス）鑑別書

[Item 22602733] [Colorfully] Pt900/Pt850 Black Diamond and Diamond 0.53ct Pendant (Necklace) with Identification Report Sale price¥98,000
Pt900 カナリーイエロートルマリン1.42ct・ダイヤモンド0.15ctペンダントトップ（ネックレストップ）鑑別書

[Item 22602731] [Colorifull] Pt900 Canary Yellow Tourmaline & 0.15ct Diamond Pendant Top (Necklace Top) with Identification Report Sale price¥158,000
K18WG エメラルド0.15ct・ダイヤモンド0.12ctペンダントトップ（ネックレストップ）鑑別書

[Item #22602732][Colori] K18WG Emerald & 0.12ct Diamond Pendant Top (Necklace Top) with Appraisal Report Sale price¥39,800
Pt900 ルベライト1.308ct・ダイヤモンド0.54ctリング 鑑別書

[Posted on 22602707] [Colorful] Pt900 Rubellite 1.308ct Ring Sale price¥158,000
K18WG ダイヤモンド ティアドロップ ペンダント（ネックレス）

[Item 22602808] [Colori] K18WG Diamond Pendant (Necklace) Sale price¥148,000
K18/K18WG イエローダイヤモンド0.30ct ダイヤモンド0.26ct ペンダント（ネックレス）

[Item No. 22602806] [Colorify] K18/K18WG 0.3ct Diamond and 0.26ct Diamond Pendant (Necklace) Sale price¥158,000
K18WG ダイヤモンド 0.5ct クロスモチーフ ペンダントトップ（ネックレストップ）

[Posted on 22602705] [Colorful] K18WG Diamond 0.5ct Pendant Top (Necklace Top) Sale price¥35,800
Pt900 ピンクサファイア 0.42ct ダイヤモンド 0.05ctリング 日独鑑

[Item 22602811] [Coloriful] Pt900 Pink Sapphire 0.42ct Diamond 0.05ct Ring with Appraisal Report Sale price¥59,800
K18 揺れるダイヤモンド 0.211ct ダイヤモンド0.35ct ペンダント（ネックレス）

[Item 22602804][Colori] K18 0.211ct Diamond & 0.35ct Diamond Pendant (Necklace) Sale price¥158,000
K18 ダイヤモンド0.35ct フラワーモチーフリング鑑別書

[Item 22602768] [Color-Full] K18 0.35ct Diamond Ring with Appraisal Report Sale price¥128,000
Pt900 アイスブルーダイヤモンド・ ダイヤモンドリング鑑別書

[Item #22602735] [Colorifi] Pt900 Ice Blue Diamond (Treated) 0.24ct Diamond Ring with Appraisal Report Sale price¥89,800
Pt900 カラーチェンジサファイア0.446ct ダイヤモンド0.12ctリング鑑別書

[On sale 8/31 at 10 PM] [Colori] Pt900 Color-Change Sapphire 0.446ct Diamond 0.12ct Ring with Identification Report Sale price¥79,800
Pt900 スピネル 0.35ct・ダイヤモンド0.09ctペンダントトップ（ネックレストップ）鑑別書

[Item No. 22602792] [Colorify] Pt900 Spinel 0.35ct / Diamond 0.09ct Pendant Top (Necklace Top) with Appraisal Report Sale price¥39,800
K18 インペリアルトパーズ・ダイヤモンドリング鑑別書

[Item 22602770] K18 Imperial Topaz Ring with Appraisal Report Sale price¥128,000
K18WG クレサンベール 合成アレキサンドライト3.00ct プリンセスカット・ダイヤモンド0.12ct ペンダントトップ 鑑別書

[Item No. 22602776] [Colorify] K18WG Synthetic Alexandrite 3ct, Diamond 0.12ct Pendant Top (Necklace Top) with Appraisal Report Sale price¥98,000
K18WG ダイヤモンド 0.5ct ペンダントトップ（ネックレストップ）鑑別書

[Item 22602774] [Color-Full] K18WG 0.5ct Diamond Pendant Top (Necklace Top) with Appraisal Report Sale price¥35,800
K18WG ブルーサファイア ダイヤモンド0.051ctペンダントトップ（ネックレストップ）鑑別書

[22602720 listed] [Colorfury] K18WG Blue Sapphire Diamond 0.051ct Pendant Top (Necklace Top) with certificate Sale price¥39,800
Pt900 アレキサンドライト 0.33ct ダイヤモンド0.11ct Xモチーフ ペンダントトップ（ネックレストップ）鑑別書

[Item #22602717] [Colorful] Pt900 Alexandrite 0.33ct Diamond 0.11ct Pendant Top (Necklace Top) with certificate Sale price¥128,000
K18 ロシア産デマントイドガーネット（ホーステール認む） 3.5mm/0.155ct ダイヤモンド0.04ctリング鑑別書

[Available 9/25, 10:00 PM] [Coloriful] K18 Russian Demantoid Garnet (Horsetail inclusion verified) 3.5mm/0.155ct, Diamond 0.04ct Ring with Identification Report Sale price¥128,000
Pt900 ロイヤルブルーサファイア 0.84ct リング鑑別書

[On sale 9/25 at 22:00] [Color-free] Pt900 Royal Blue Sapphire 0.84ct Ring with Identification Report Sale price¥148,000
【Calafuri】Pt900 Ice Blue Diamond (Treated) 1.00ct Ring

【Calafuri】Pt900 Ice Blue Diamond (Treated) 1.00ct Ring Sale price¥158,000
Pt950レッドベリル0.20ct・ダイヤモンド0.23ctリング鑑別書

[On sale 9/20 at 22:00] [Color-free] Pt950 Red Beryl 0.20ct / Diamond 0.23ct Ring with Appraisal Report Sale price¥98,000
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KARATZ collaboration
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jewelry

K18WG ターコイズ 15.78ct/15.73ct ピアス 鑑別書
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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
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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.