![[Koshu Precious Stones Plusthree] Tibetan Andesine 7.873ct [Collaboration] Loose Stone (Color Change Andesine)](http://store.karatz.jp/cdn/shop/files/collage_4f5b4421-c714-46aa-aee2-16359b25e490.png?v=1714140601&width=2000)
![[Listed on 12563260] Rough diamond (sawable) from Botswana, 0.118ct](http://store.karatz.jp/cdn/shop/files/P6110749_e60d6d28-937a-40eb-b4a2-93ace361ebf1.jpg?v=1781561323&width=3070)
[Listed on 12563260] Rough diamond (sawable) from Botswana, 0.118ct
Sale price¥29,800
![[Sales from 10 PM on June 14th] Myanmar Red Spinel 0.266 ct Loose Stone](http://store.karatz.jp/cdn/shop/files/P6121081_26e823bd-4b1e-4212-b941-32eeefb9c41e.jpg?v=1781312892&width=2822)
![[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"](http://store.karatz.jp/cdn/shop/files/collage_750647ff-485a-47ad-b68f-5259426bab27.png?v=1781169214&width=3000)
![[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]](http://store.karatz.jp/cdn/shop/files/P1010022_ef73db78-0236-4935-ad0e-4c7c2f8e2d16.jpg?v=1781224879&width=1852)
![[Available 6/XX at 10 PM] Limited 12 Stones: Cornflower Blue Sapphire Gacha 💎 Comes with a Trillion Cut Sapphire Bonus! (Multiple purchase discount available)](http://store.karatz.jp/cdn/shop/files/45_75d03d61-7075-4fab-8847-80c7faf27910.png?v=1781499622&width=1890)
![[June. Sales at 10 PM JST] 《Limited to 10 Stones》Sapphire Gacha Featuring Padparadscha Sapphires with DGL Certificates 💎《Multiple Purchase Discount Available》](http://store.karatz.jp/cdn/shop/files/47_b35ffd1a-26ed-4085-b432-7e109406ed64.png?v=1781505203&width=1890)
![[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"](http://store.karatz.jp/cdn/shop/files/collage_fbc9c12a-d5e0-4c94-9d20-bbfb36fad717.png?v=1781513378&width=3000)
【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%）
Sale price¥55,800
【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）
Sale price¥79,800
【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》
Sale price¥8,800
【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》
Sale price¥3,980
【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》
Sale price¥3,980
【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》
Sale price¥6,980
【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》
Sale price¥29,800
【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》
Sale price¥6,980
【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》
Sale price¥5,980
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.
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.