【11/2 22時販売】スリランカ産ホワイトサファイア 1.509ctルース 鑑別書
Sale price¥39,800
【11/1 22時販売】メキシコ産ファイアオパール（ファセットカット） 0.747ctルース
Sale price¥12,800
【10/28 22時販売】【カラフリ】Pt900 ダイヤモンド 0.47ct ウェーブデザインリング
Sale price¥148,000
【10/26 22時販売】【カラフリ】K18WG ダイヤモンド 0.88ct 蝶モチーフ リング
Sale price¥168,000
【10/26 22時販売】【カラフリ】K18WG ダイヤモンド 0.60ct 縦ライン ペンダント（ネックレス）
Sale price¥158,000
【10/28 22時販売】【カラフリ】Pt900 ブルージルコン（ラタナキリブルー） 7.7ct ダイヤモンド0.27ctリング鑑別書
Sale price¥188,000
【10/28 22時販売】【カラフリ】K18 ルチルクォーツ（ルチルレイテッドクォーツ）4.48ct エメラルド0.19ct リング 鑑別書
Sale price¥128,000
【10/30 22時販売】スリランカ産イエローサファイア 1.996ctルース
Sale price¥69,800
【10/30 22時販売】スリランカ産イエローサファイア 0.937ctルース
Sale price¥29,800
【10/30 22時販売】スリランカ産イエローサファイア 1.181ctルース
Sale price¥39,800
【10/30 22時販売】スリランカ産ピンクサファイア 0.524ctルース
Sale price¥22,800
【10/30 22時販売】スリランカ産ピンクサファイア 0.586ctルース
Sale price¥22,800
![[Available 10/12 at 10 PM] 《Limited to 1 stone》 FANCY LIGHT PINK 2.9mm/0.092ct FANCY Color Pink Diamond (Sorting report included) 《Multi-buy discount available》](http://store.karatz.jp/cdn/shop/files/2026-10-1816.40.11.png?v=1792309234&width=1354)
![[Available 10/12 at 10 PM] 《Limited to 1 stone》 FANCY LIGHT PINK 2.9mm/0.092ct FANCY Color Pink Diamond (Sorting report included) 《Multi-buy discount available》](http://store.karatz.jp/cdn/shop/files/2026-10-1717.21.50_b5bd12df-a26a-4558-b937-050e8f74386f.png?v=1792225381&width=1256)
Colombian emerald loose stone 0.167ct
Sale price¥22,800
[Item 12564468] Australian Black Opal 0.306ct Loose Stone
Sale price¥25,800
[Item 12564642] Colombian Trapiche Emerald 1.036ct Loose Stone
Sale price¥69,800
[Item 12565148] Ruby 0.552ct Loose Stone
Sale price¥14,800
[Item 22602848] K14WG Akoya Pearl Earrings with Identification Report
Sale price¥19,800
[Item No. 22602835] K18 Akoya Pearl Earrings with Appraisal Certificate
Sale price¥22,800
[Item 12564569] Russian Non-Oiled Emerald 0.121ct Loose Gemstone
Sale price¥49,800
Zambian Emerald 0.188ct Loose Stone
Sale price¥9,800
Australian Black Opal 0.421ct Loose Stone
Sale price¥18,800
![[10/3 (Sat) 10:00 AM Deadline: Lottery Sale ①_02] Diamond (H&C) 4.3mm/0.318ct Loose Stone (H, SI-1, 3Excellent H&C) with CGL Certificate & Sarine Light Report](http://store.karatz.jp/cdn/shop/files/collage_7de5fb5b-0545-4b3f-ad81-43e23de482f7.png?v=1790579155&width=2000)
[Posted on 22602707] [Colorful] Pt900 Rubellite 1.308ct Ring
Sale price¥158,000
[Item 12564248] Madagascar Sapphire 0.385ct Loose Stone
Sale price¥18,800
[10/9 10 PM Sale] Russian Non-Oiled Emerald 0.061ct Loose Stone
Sale price¥35,800
[Available 10/14 at 22:00] Russian Emerald 0.247ct Loose Gemstone
Sale price¥49,800
[Item 12564459] Nepalese Kyanite 1.017ct Loose Gemstone
Sale price¥9,800
[Item 12564471] Australian Boulder Opal 4.444ct Loose Gemstone
Sale price¥17,800
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.