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Sold out 1 rose cut diamond (VS-SI class equivalent, 3.0mm)《Multiple purchase discount available》

1 rose cut diamond (VS-SI class equivalent, 3.0mm)《Multiple purchase discount available》

Sold out 【猫カット】ローズクォーツ（8mm） - カラッツSTORE

[Cat cut] Rose quartz (8mm)《Multiple purchase discount available》

Sold out 【猫カット】シトリン（8mm） - カラッツSTORE

[Cat cut] Citrine (8mm)

Sold out 【11/24 22時販売】《限定10石》ブルー宝石ガチャ💎ブラジル産パライバトルマリン(CuO:2.8%,MnO:3.3%)・コバルトガーナイト(鑑別書付)・アフガナイト・ベニトアイト・アウイナイト《複数購入割引有》

【11/24 22時販売】《限定10石》ブルー宝石ガチャ💎ブラジル産パライバトルマリン(CuO:2.8%,MnO:3.3%)・コバルトガーナイト(鑑別書付)・アフガナイト・ベニトアイト・アウイナイト《複数購入割引有》
Sold out Limited Edition of 10 Bicolor Gacha! 💎 Includes two Zimbabwean euclase stones (average 0.088ct), a 1.03ct bicolor sapphire, a bicolor chrysoberyl, and more. Discounts available for multiple purchases.

Limited Edition of 10 Bicolor Gacha! 💎 Includes two Zimbabwean euclase stones (average 0.088ct), a 1.03ct bicolor sapphire, a bicolor chrysoberyl, and more. Discounts available for multiple purchases.
Sold out Limited Edition of 11 Rare Stones! 💎 Two 0.23ct Paraiba Tourmalines from Batalha, Brazil, a Pink Diamond, and a Benitoite Loose Stone. Discounts available for multiple purchases.

Limited Edition of 11 Rare Stones! 💎 Two 0.23ct Paraiba Tourmalines from Batalha, Brazil, a Pink Diamond, and a Benitoite Loose Stone. Discounts available for multiple purchases.
Sold out Limited to 10 stones: Blue Stone Gacha (Paraiba Tourmaline, Cobalt Garnite, Indigo Tourmaline with Certificate of Authenticity, Zimbabwean Euclase with Certificate of Authenticity) (Multiple purchase discounts available)

Limited to 10 stones: Blue Stone Gacha (Paraiba Tourmaline, Cobalt Garnite, Indigo Tourmaline with Certificate of Authenticity, Zimbabwean Euclase with Certificate of Authenticity) (Multiple purchase discounts available)
Sold out 《再販売》ハイヒール（ロッククリスタル）1石《宝石ハイヒール1個 - カラッツSTORE

High heels (rock crystal) 1 stone (gem high heels)《Discount available for multiple purchases》
Sold out Gem Gacha💎 1 Paraiba Tourmaline from Brazil (Batalha mine, 2.5-3.0mm, includes blue)

Gem Gacha💎 1 Paraiba Tourmaline from Brazil (Batalha mine, 2.5-3.0mm, includes blue)
Sold out Gem Gacha💎1 special fluorescent diamond (VS-SI class equivalent, 2.0mm)

Gem Gacha💎1 special fluorescent diamond (VS-SI class equivalent, 2.0mm)

Sold out Morganite raw stone + 2 loose pieces (orange/pink, approx. 6 x 4 mm) 3-piece set《Multiple purchase discount available》

Morganite raw stone + 2 loose pieces (orange/pink, approx. 6 x 4 mm) 3-piece set《Multiple purchase discount available》

Sold out 【11/23 22時販売】ブラジル産パライバトルマリン(カボションカット約2.2ｍｍ)1石ルース《複数購入割引有》

【11/23 22時販売】ブラジル産パライバトルマリン(カボションカット約2.2ｍｍ)1石ルース《複数購入割引有》
Sold out [On Sale November 1st at 10 PM] Oregon Sunstone Gacha Loose Stone (Average 1.60ct) Including Koshu Precious Stones Cut Plus Three and Vortex Cut (Multiple Purchase Discounts Available)

[On Sale November 1st at 10 PM] Oregon Sunstone Gacha Loose Stone (Average 1.60ct) Including Koshu Precious Stones Cut Plus Three and Vortex Cut (Multiple Purchase Discounts Available)
Sold out Greenland Ruby Loose (approx. 2.3mm, Top Color, Certificate Included) (Multiple Purchase Discounts Available)

Greenland Ruby Loose (approx. 2.3mm, Top Color, Certificate Included) (Multiple Purchase Discounts Available)

Sold out Limited to 10 stones: Blue Stone Gacha (0.088ct Paraiba Tourmaline from Brazil, Euclase from Zimbabwe, Cobalt Garnite) [Multiple purchase discounts available]

Limited to 10 stones: Blue Stone Gacha (0.088ct Paraiba Tourmaline from Brazil, Euclase from Zimbabwe, Cobalt Garnite) [Multiple purchase discounts available]

Sold out Limited to 9 stones: One loose Brazilian rainbow aquamarine (average 1.0 carat, pear cut) [Multiple purchase discounts available]

Limited to 9 stones: One loose Brazilian rainbow aquamarine (average 1.0 carat, pear cut) [Multiple purchase discounts available]
Sold out Limited to 7 stones! May birthstone special offer! Colombian emerald cat's eye, 1 loose stone (highly transparent cat's eye) Multiple purchase discounts available

Limited to 7 stones! May birthstone special offer! Colombian emerald cat's eye, 1 loose stone (highly transparent cat's eye) Multiple purchase discounts available
Sold out 【猫カット】ムーンストーン（8mm） - カラッツSTORE

[Cat cut] Moonstone (8mm)《Multiple purchase discount available》

Sold out One loose demantoid garnet from Russia (oval cut, approximately 3 x 2 mm) (multiple purchase discounts available)

One loose demantoid garnet from Russia (oval cut, approximately 3 x 2 mm) (multiple purchase discounts available)

Sold out 1 Russian Alexandrite loose stone (round cut, 1.3-1.6mm) {Multiple purchase discount available}

1 Russian Alexandrite loose stone (round cut, 1.3-1.6mm) {Multiple purchase discount available}
Sold out Limited to 6 stones: Brazilian Medusa Quartz (Paraiba Quartz) cat cut 1 stone loose (6mm) Multiple purchase discount available

Limited to 6 stones: Brazilian Medusa Quartz (Paraiba Quartz) cat cut 1 stone loose (6mm) Multiple purchase discount available
Sold out Gem Gacha💎 [Sanjay] Tanzanian Spinel (1 in 3 will be a Red Spinel) Loose Stone (Multiple Purchase Discounts Available)

Gem Gacha💎 [Sanjay] Tanzanian Spinel (1 in 3 will be a Red Spinel) Loose Stone (Multiple Purchase Discounts Available)
Sold out ジェムガチャ💎 アフガナイト1石 ルース（平均0.14ct）《複数購入割引有》

Gem Gacha💎 Afghanite 1 stone loose (average 0.14ct) {Multiple purchase discount available}

Sold out One loose, oil-free emerald from Russia (2.8mm, round cut) (Multiple purchase discounts available)

One loose, oil-free emerald from Russia (2.8mm, round cut) (Multiple purchase discounts available)
Sold out Limited to 13 stones: 1 red spinel rough stone from Myanmar. Discounts available for multiple purchases.

Limited to 13 stones: 1 red spinel rough stone from Myanmar. Discounts available for multiple purchases.
Sold out Limited to 3 stones: 1 neon blue apatite loose stone from Madagascar (Sangé cut) Multiple purchase discounts available

Limited to 3 stones: 1 neon blue apatite loose stone from Madagascar (Sangé cut) Multiple purchase discounts available
Sold out 安部祐一朗氏グッズセット【マグカップ＆コンパクトミラー＆オレゴンサンストーンの宝石】

Yuichiro Abe goods set [General purpose case & notebook & postcard autographed & Oregon sunstone jewelry]

Sold out グリーンランド産アイスルビー 1石（ハートシェイプ,4mm）

Ice ruby ​​from Greenland 1 stone (heart shape, 4mm) Comes with original pouch

Sold out スピネル 1石《カスタムカット》

Spinel 1 stone《Custom cut》《Multiple purchase discount available》

Sold out 【さくらインカット】ティンカーベルクォーツ6.480ctルース - カラッツSTORE

[Sakura Incut] Tinkerbell Quartz 6.480ct Loose (Pink Fire Quartz)

Sold out Limited to 3 stones: Myanmar gray spinel and platinum spinel (4.0mm, round cut) loose stone (multiple purchase discounts available)

Limited to 3 stones: Myanmar gray spinel and platinum spinel (4.0mm, round cut) loose stone (multiple purchase discounts available)

Sold out 【猫カット】ブラジル産ゲーサイトインアメジスト 0.561ctルース

[Cat Cut] Brazilian Goethite Amethyst 0.561ct Loose Stone
Sold out Limited to 9 stones: 1 Spinel Gacha (August birthstone) including 1 bicolor spinel (0.93 ct) (Multiple purchase discounts available)

Limited to 9 stones: 1 Spinel Gacha (August birthstone) including 1 bicolor spinel (0.93 ct) (Multiple purchase discounts available)

Sold out Limited to 2 stones: 1 Nigerian Cobalt Garnite stone (Multiple purchase discounts available)

Limited to 2 stones: 1 Nigerian Cobalt Garnite stone (Multiple purchase discounts available)
Sold out Limited quantity: Brazilian Paraiba tourmaline, 1 stone loose (Batalha mine, oval cut) Multiple purchase discounts available

Limited quantity: Brazilian Paraiba tourmaline, 1 stone loose (Batalha mine, oval cut) Multiple purchase discounts available
Sold out Tanzanite rough and loose stone set of 2 (average 3.3ct, special cut) from Tanzania {Multiple purchase discounts available}

Tanzanite rough and loose stone set of 2 (average 3.3ct, special cut) from Tanzania {Multiple purchase discounts available}

Sold out 安部祐一朗氏グッズセット【キャンバス＆アクルルキーホルダー＆オレゴンサンストーンの宝石】

Yuichiro Abe goods set [canvas & acrylic key chain & Oregon sunstone jewelry]

Sold out 【カメリアカット】レモンクォーツ8mmルース 直筆サイン付&ワッペン付 - カラッツSTORE

[Camellia cut] Lemon quartz 8mm loose with autograph and emblem

Sold out 【12525545掲載】アルマンディンガーネットキャッツアイ 1.820ctルース

Almandine garnet cat's eye 1.820ct loose

Sold out ブラジル産アレキサンドライト 0.058ctルース

[Posted 12544974] Alexandrite from Brazil 0.058ct loose
Sold out コロンビア産トラピッチェエメラルド（逆トラピッチェ） 0.053ctルース

Colombian trapiche emerald (reverse trapiche) 0.053ct loose
Sold out アフガニスタン産アフガナイト 0.077ctルース

[11/14 22:00 Sale] Afghanite 0.077ct Loose Stone from Afghanistan
Sold out 合成オパール 6.1mm/0.792ctルース（ローズカット） (ローズカット)

[11/10 22:00 Sale] Synthetic Opal 6.1mm/0.792ct Loose Stone (Rose Cut) (Rose Cut)
Sold out 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） 6.3mm/0.911ctルース（ローズカット）

[On Sale 11/10 at 10 PM] Tanzanian Sunstone (Illusion Sunstone) 6.3mm/0.911ct Loose Stone (Rose Cut)
Sold out タンザニア産アンデシン・ラブラドライト（通称名 レインボームーンストーン） 4.3mm/0.238ctルース（ローズカット）

[On Sale 11/10 at 10 PM] Tanzanian Andesine Labradorite (also known as Rainbow Moonstone) 4.3mm/0.238ct Loose Stone (Rose Cut)
Sold out ナイジェリア産モルガナイト 0.354ctルース

[11/9 22:00 Sale] Nigerian Morganite 0.354ct Loose Stone
Sold out アフガニスタン産ハックマナイト 0.105ctルース

[11/17 22:00 Sale] Afghanistan Hackmanite 0.105ct Loose Stone
Sold out アフガニスタン産ハックマナイト 0.105ctルース

[11/17 22:00 Sale] Afghanistan Hackmanite 0.105ct Loose Stone

KARATZ Custom Made

Why not take your favorite gemstone that you found at KARATZ and have it made into custom-made jewelry? It will be made by skilled Japanese craftsmen.
We carefully craft each piece of jewelry, starting with the stone setting, to match the individual characteristics of the gemstone.

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.