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coming soon {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}
coming soon 【6/20 22時販売】《限定21石》高知県産血赤珊瑚 枝(原木)1石(3月誕生石、コーラル,平均4.7ct)《複数購入割引有》 
coming soon 【6/19 22時販売】《限定20石》高知県産血赤珊瑚 枝(原木)1石(3月誕生石、コーラル,平均5.8ct)《複数購入割引有》 
coming soon 【6/21  22時販売】《限定1セット》アメジスト&シトリン 対称ペアカットセット66.58ctルース《複数購入割引有》
coming soon 【6/19  22時販売】《限定10石》マダガスカル産アンデシン・ラブラドライト(レインボームーンストーン)ガチャ1石ルース(平均0.40ct)《複数購入割引有》
coming soon 【6/20 22時販売】《限定5石》カンボジア産ラタナキリブルージルコンガチャ(平均0.73ct)《複数購入割引有》
coming soon 【6/19 22時販売】《限定1セット》NOBU氏カットのタンザニア産イリュージョンサンストーン2石セット《複数購入割引有》
coming soon 【6/20  22時販売】《限定12石》マダガスカル産アンデシン・ラブラドライト(レインボームーンストーン&ブルームーンストーン)2石セット(平均0.60ct)《複数購入割引有》
coming soon 【6/19 22時販売】《限定7石》アントヒルガーネット1石ルース(オーバルカット,約4×3mm)《複数購入割引有》 
coming soon 【6/21  22時販売】《限定5石》ドラゴンガーネット1石ルース(ラウンドカット,5mm)《複数購入割引有》
coming soon 【6/20 22時販売】ジンバブエ産グリーンダイヤモンド原石(ソーヤブル) 0.228ct原石(トライゴン) 
coming soon 【6/19 22時販売】モザンビーク産エルバイトトルマリン/ピンクトルマリン 1.126ctルース(CuO:0.2%,MnO:2.4%)
coming soon 【6/19 22時販売】コロンビア産トラピッチェエメラルド 0.183ctルース
coming soon [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"
coming soon [June. Sales at 10 PM JST] 《Limited to 10 Stones》Sapphire Gacha Featuring Padparadscha Sapphires with DGL Certificates 💎《Multiple Purchase Discount Available》
coming soon 【6/  10 PM JST】Limited to 15 Stones: Pigeon Blood Ruby Gacha – Includes AIGS certified stones 💎 Comes with a synthetic ruby bonus! Multiple purchase discount available.
coming soon [Available 6/XX at 10 PM] Limited 12 Stones: Cornflower Blue Sapphire Gacha 💎 Comes with a Trillion Cut Sapphire Bonus! (Multiple purchase discount available)
Sold out K18 ピンクサファイア 0.452ct ペンダントトップ(ネックレストップ)
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 [Sales from 10 PM on June 14th] Myanmar Red Spinel 0.266 ct Loose Stone
Sold out 【12563281掲載】スリランカ産ムーンストーン 0.794ctルース
coming soon [Listed on 12563260] Rough diamond (sawable) from Botswana, 0.118ct
coming soon 【12563195掲載】コンゴ産ピンクトルマリン 1.056ctルース
coming soon 【12563190掲載】非加熱パープルサファイア 0.775ctルース
coming soon 【12563189掲載】ビルマ産非加熱ブルーサファイア 0.177ctルース
Sold out マダガスカル産バイカラーサファイア 0.741ctルース
coming soon マダガスカル産バイカラーサファイア 0.607ctルース
coming soon マダガスカル産バイカラーサファイア 0.271ctルース
coming soon [Lottery Sale_0612_01] Madagascar Bekily Blue Garnet (Color Change Garnet) 0.542ct Loose
coming soon [On sale June 19th, 10 PM] Authentic Gemstone Encyclopedia 3D Stickers Vol. 1 "The Big Five Gemstones"
Sold out [Sale on 6/13 at 10 PM] Limited to 11 stones! Ametrine Sakura-cut Koshu-Kiseki-Kiriko plusthree Gacha (including flower cuts, usually priced at 29,800 yen), with a bonus mini ametrine stone. Multiple purchase discount available.
Sold out [On sale at 10 PM on June 8th] Pt900 Benitoite 0.135ct and Diamond 0.26ct Ring
coming soon 【22602641掲載】【カラフリ】K18WG ダイヤモンド ペンダントトップ(ネックレストップ)
coming soon 【22602640掲載】【カラフリ】K18/SILVER/Pd アメジスト ペンダントトップ(ネックレストップ)
coming soon [22602639 Posted] [Calafuri] K18 Amber/Copal Pendant Top (Necklace Top)
coming soon [Sale starts June 18th at 10 PM] [Colorful] K18PG Benitoite 0.03ct Ring with Certificate
Sold out タンザニア産ゾイサイト 0.227ctルース
Sold out ロシア産ダイヤモンド原石(ソーヤブル) 0.117ctルース
Sold out ルベライト 0.410ctルース
coming soon [Sale starts 6/18 at 10 PM] Colorful Pt900 Synthetic Alexandrite 1.08ct Diamond 0.06ct Pendant Top (Necklace Top) with Appraisal Certificate
coming soon 【22602636掲載】【カラフリ】K18 アコヤパール リング
coming soon [22602635 listed] [Calafuri] K18 Rhodochrosite 0.77ctct Ring
coming soon [Listed 22602633] [Colorful] Pt900/K18 Diamond 0.22ct Ring
coming soon [22602631 Posted] [Coloreful] Pt900 Blue Sapphire 1.05ctct Ring
Sold out ナイジェリア産コバルトガーナイト 0.095ctルース
Sold out ナイジェリア産コバルトガーナイト 0.123ctルース

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.