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Sold out 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)
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)
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.
Sold out 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》
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》
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)
Sold out 《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)
Sold out 《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》
Sold out 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)
Sold out 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]
Sold out 《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)
Sold out ラベンダー翡翠(ヒスイ) 78.496ctルース 中宝
Sold out ブラジル産パライバトルマリン 0.240ctルース
Sold out オーストラリア産ボルダーオパール 52.582ctルース
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
Sold out ベニトアイト1石(プリンセスカット,2.2mm)
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
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]
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》
Sold out マダガスカル産バイカラーサファイア 0.741ctルース
Sold out [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
Sold out 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
Sold out アフガニスタン産ハックマナイト 0.171ctルース
Sold out アフガニスタン産ハックマナイト 0.143ctルース
Sold out パパラチアサファイア 0.177ctルース DGL鑑
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
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》 
Sold out Pt900 ブラジル産パライバトルマリン 0.11ct リング
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
Sold out ブラジル産ロンドンブルートパーズ 5.978ctルース
Sold out オーストラリア産ブラックオパール 0.522ctルース
Sold out スリランカ産ヘソナイトガーネット 1.968ctルース
Sold out ブラジル産パライバトルマリン 0.177ctルース
Sold out ボリビア産フォスフォフィライト 0.448ctルース
Sold out 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
Sold out 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
Sold out 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.