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Sold out Swiss Blue Topaz 1 stone (10 x 8mm, special cut)《Discount available for multiple purchases》

Swiss Blue Topaz 1 stone (10 x 8mm, special cut)《Discount available for multiple purchases》

Sold out Madagascar Pezzottaite Gacha (2.2-2.5mm, Round Cut) - Limited to 6 Stones (Multiple Purchase Discount Available)

Madagascar Pezzottaite Gacha (2.2-2.5mm, Round Cut) - Limited to 6 Stones (Multiple Purchase Discount Available)
Sold out Panda Cut Gacha💎 Brazilian Paraiba Tourmaline (0.226ct/CuO: 0.7%, MnO: 2.5%) - 1 Stone, 5 Panda Cut Stones (Multiple Purchase Discounts Available)

Panda Cut Gacha💎 Brazilian Paraiba Tourmaline (0.226ct/CuO: 0.7%, MnO: 2.5%) - 1 Stone, 5 Panda Cut Stones (Multiple Purchase Discounts Available)
Sold out Limited to 10 stones! Zimbabwean Bicolor Euclase, Bicolor Sapphire, and More! Bicolor Loose Stones! 💎 Single Loose Stones Available. Discounts Available for Multiple Purchases.

Limited to 10 stones! Zimbabwean Bicolor Euclase, Bicolor Sapphire, and More! Bicolor Loose Stones! 💎 Single Loose Stones Available. Discounts Available for Multiple Purchases.
Sold out Limited to 5 stones: 1 Mexican Hyalite Opal loose stone (average 0.5ct) Multiple purchase discounts available

Limited to 5 stones: 1 Mexican Hyalite Opal loose stone (average 0.5ct) Multiple purchase discounts available
Sold out Fire Opal (Common Opal) 2 stone set《Discount available for multiple purchases》

Fire Opal (Common Opal) 2 stone set《Discount available for multiple purchases》

Sold out [Sales begin June 12 at 10 PM JST] Blue Gem Gacha 💎 Featuring Brazilian Paraiba Tourmaline (CuO: 1.5%, MnO: 3.2%) normally priced at 35,800 JPY, Zimbabwean Euclase, and more! 《Bulk purchase discounts available》

[Sales begin June 12 at 10 PM JST] Blue Gem Gacha 💎 Featuring Brazilian Paraiba Tourmaline (CuO: 1.5%, MnO: 3.2%) normally priced at 35,800 JPY, Zimbabwean Euclase, and more! 《Bulk purchase discounts available》
Sold out [On Sale 5/30 at 10 PM] "Limited 9 Stones" Blue Gem Gacha 💎 Brazilian Paraiba Tourmaline (CuO: 2.2%, MnO: 3.5%), Top Color Benitoite, Hauyne, Apatite (Multi-purchase discount available)

[On Sale 5/30 at 10 PM] "Limited 9 Stones" Blue Gem Gacha 💎 Brazilian Paraiba Tourmaline (CuO: 2.2%, MnO: 3.5%), Top Color Benitoite, Hauyne, Apatite (Multi-purchase discount available)
Sold out 《Limited to 13 stones》Beryl Gacha (including Aquamarine Vortex Cut Koshu Kiseki Kiriko) 1 Loose Stone《Multi-purchase discount available》

《Limited to 13 stones》Beryl Gacha (including Aquamarine Vortex Cut Koshu Kiseki Kiriko) 1 Loose Stone《Multi-purchase discount available》
Sold out November birthstone topaz gacha! Win an 8.16ct sky blue topaz from Koshu Kiriko (Sakura Kiriko) and more! (Multiple purchase discounts available)

November birthstone topaz gacha! Win an 8.16ct sky blue topaz from Koshu Kiriko (Sakura Kiriko) and more! (Multiple purchase discounts available)
Sold out 《Limited to 8 stones》 [Mr. Sanjay] Hackmanite or Sodalite 1 stone loose (maximum 3.63 ct)《Multiple purchase discount available》

《Limited to 8 stones》 [Mr. Sanjay] Hackmanite or Sodalite 1 stone loose (maximum 3.63 ct)《Multiple purchase discount available》
Sold out 1 sky blue topaz stone (10mm, flower cut)《Discount available for multiple purchases》

1 sky blue topaz stone (10mm, flower cut)《Discount available for multiple purchases》

Sold out Brazilian Paraiba Tourmaline (cabochon cut, approximately 2.2mm) 1 loose stone (multiple purchase discounts available)

Brazilian Paraiba Tourmaline (cabochon cut, approximately 2.2mm) 1 loose stone (multiple purchase discounts available)
Sold out Brazilian Paraiba Tourmaline (cabochon cut, approximately 2.2mm) 1 loose stone (multiple purchase discounts available)

Brazilian Paraiba Tourmaline (cabochon cut, approximately 2.2mm) 1 loose stone (multiple purchase discounts available)

Sold out 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》
Sold out [On sale June 7th at 10 PM] Limited to 1 set: 6-stone Benitoite Gradient Set, including Orange Benitoite (Peach Benitoite) (2.25mm, includes top quality) [Multiple Purchase Discount Available]

[On sale June 7th at 10 PM] Limited to 1 set: 6-stone Benitoite Gradient Set, including Orange Benitoite (Peach Benitoite) (2.25mm, includes top quality) [Multiple Purchase Discount Available]
Sold out 《Limited to 5 stones》Carving Gacha 💎 Green Quartz, Lemon Quartz, Blue Topaz 《Multiple Purchase Discount Available》

《Limited to 5 stones》Carving Gacha 💎 Green Quartz, Lemon Quartz, Blue Topaz 《Multiple Purchase Discount Available》
Sold out Limited to 12 stones! Gemstone Gacha including Brazilian Paraiba Tourmaline rough stone 💎 1 rough stone (Multiple purchase discounts available)

Limited to 12 stones! Gemstone Gacha including Brazilian Paraiba Tourmaline rough stone 💎 1 rough stone (Multiple purchase discounts available)
Sold out ラベンダー翡翠（ヒスイ） 78.496ctルース 中宝

Lavender Jade (Jade) 78.496ct Loose Medium Treasure
Sold out ブラジル産パライバトルマリン 0.240ctルース

Paraiba tourmaline from Brazil 4.1mm/0.240ct loose

Sold out オーストラリア産ボルダーオパール 52.582ctルース

Australian boulder opal 52.582ct loose

Sold out 【ダンデライオンカット】メキシコ産ファイアオパール 7mm《コラボ》ルース ワッペン付

[Dandelion cut] Fire opal 7mm loose

Sold out ベニトアイト1石（プリンセスカット,2.2mm）

Benitoite 1 stone (princess cut, 2.2mm)《Discount available for multiple purchases》

Sold out 【宝石商の道具】加熱処理のエチオピア産オパール 1石（ブラックオパールとの見分けシート付） - カラッツSTORE

1 heat-treated Ethiopian opal (includes a sheet to distinguish it from black opal)

Sold out [Sale starts at 10 PM on June 14] Limited 1 Set! Beniotite 5-Stone Gradient Set (2.0mm, including top quality stone) [Bulk purchase discount available]

[Sale starts at 10 PM on June 14] Limited 1 Set! Beniotite 5-Stone Gradient Set (2.0mm, including top quality stone) [Bulk purchase discount available]
Sold out 【Sales start: June 14, 10 PM JST】《Limited 1 Set》Benitoite Gradation 5-Stone Set (1.75mm, includes top quality) 《Multiple Purchase Discount Available》

【Sales start: June 14, 10 PM JST】《Limited 1 Set》Benitoite Gradation 5-Stone Set (1.75mm, includes top quality) 《Multiple Purchase Discount Available》
Sold out マダガスカル産バイカラーサファイア 0.741ctルース

[On sale June 14th at 10 PM] Madagascar Bi-Color Sapphire 5.3mm/0.741ct Loose Stone
Sold out [On sale at 10 PM on June 8th] Pt900 Benitoite 0.135ct and Diamond 0.26ct Ring

[On sale at 10 PM on June 8th] Pt900 Benitoite 0.135ct and Diamond 0.26ct Ring
Sold out マダガスカル産パパラチアサファイア 0.296ctルース

[On Sale June 6th at 10 PM] Madagascar Padparadscha Sapphire 3.9mm/0.296ct Loose Stone with DGL Certificate
Sold out Benitoite 0.338ct loose stone

Benitoite 0.338ct loose stone
Sold out アフガニスタン産ハックマナイト 0.123ctルース

[Sale on June 4th at 10 PM JST] Afghan Hackmanite, 0.123ct Loose Stone
Sold out アフガニスタン産ハックマナイト 0.171ctルース

[On sale May 30th at 10 PM] Afghan Hackmanite 0.171ct Loose Stone
Sold out アフガニスタン産ハックマナイト 0.143ctルース

[On sale June 4th at 10 PM] Afghan Hackmanite 0.143ct Loose Stone
Sold out パパラチアサファイア 0.177ctルース DGL鑑

[On sale May 27th at 10 PM JST] Madagascar Paparadscha Sapphire 0.177ct Loose Stone DGL Certified
Sold out マダガスカル産パパラチアサファイア 0.517ctルース DGL鑑

Madagascar Padparadscha Sapphire 0.517ct Loose DGL Certified
Sold out 【5/23 22時販売】《限定11石》カービングガチャ💎通常29,800円のイチゴカット43ctのブルートパーズ・フラワーカットのアメジスト・プルメリアカットなど（おまけで特殊カットブルートパーズ8-10mm）《複数購入割引有》　

【5/23 22時販売】《限定11石》カービングガチャ💎通常29,800円のイチゴカット43ctのブルートパーズ・フラワーカットのアメジスト・プルメリアカットなど（おまけで特殊カットブルートパーズ8-10mm）《複数購入割引有》　
Sold out Pt900 ブラジル産パライバトルマリン 0.11ct リング

【Sale starts 5/26 at 10 PM JST】[Colorful] Pt900 Paraiba Tourmaline from Brazil 0.11ct / Diamond 0.58ct Ring (CuO: 2.4%, MnO: 0.9%)

Sold out スリランカ産クリソベリルキャッツアイ 0.507ctルース

[On sale May 15th at 10 PM] Sri Lankan Chrysoberyl Cat's Eye 4.3mm/0.507ct Loose Stone
Sold out ブラジル産ロンドンブルートパーズ 5.978ctルース

[On sale May 21st, 10 PM JST] Brazilian London Blue Topaz 5.978ct Loose Gemstone
Sold out オーストラリア産ブラックオパール 0.522ctルース

[On sale May 24th at 10 PM] Australian Black Opal 0.522ct Loose Stone

Sold out スリランカ産ヘソナイトガーネット 1.968ctルース

[On Sale May 2nd, 10 PM JST] Sri Lankan Hessonite Garnet 1.968ct Loose Stone
Sold out ブラジル産パライバトルマリン 0.177ctルース

Brazilian Paraiba Tourmaline 0.177ct loose stone (CuO: 2.1%, MnO: 1.3%)
Sold out ボリビア産フォスフォフィライト 0.448ctルース

Bolivian Phosphophyllite 0.448ct Loose Stone with Certificate

Sold out Brazilian Swiss Blue Topaz 1.198ct Loose

Brazilian Swiss Blue Topaz 1.198ct Loose
Sold out モザンビーク産パライバトルマリン 1.581ctルース

Paraiba tourmaline from Mozambique 1.581ct loose stone (CuO: 0.5%, MnO: 1.0%)
Sold out Brazilian Paraiba Tourmaline 0.216ct loose stone (CuO:1.2%, MnO:2.7%)

Brazilian Paraiba Tourmaline 0.216ct loose stone (CuO:1.2%, MnO:2.7%)
Sold out クリストバライトインクォーツ 1.660ctルース

Cristobalite in Quartz 1.660ct Loose
Sold out Sky blue topaz 5.595ct loose

Sky blue topaz 5.595ct loose

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.