Product list

Pt900/Pt850 ピンクダイヤモンド 0.03ct・ダイヤモンド0.30ctペンダント（ネックレス）ミニ鑑別カード

[On sale 9/24 at 10 PM] [Colori] Pt900/Pt850 Pink Diamond 0.03ct & Diamond 0.30ct Pendant (Necklace) with Mini Identification Card Sale price¥79,800

Pt900 エメラルド 5.33ct サファイア4.52ct、ダイヤモンド0.12ctリング宝貴協

[On sale 9/24 at 22:00] [Colorfully] Pt900 Emerald 5.33ct, Sapphire 4.52ct, Diamond 0.12ct Ring (JGA Certified) Sale price¥198,000

[Available 9/30 at 10:00 PM] Jeremejevite from Namibia, 0.061ct loose stone, with identification report Sale price¥15,800

[Available 9/19 at 10 PM] Jeremejevite from Namibia, 0.054ct loose stone with identification report Sale price¥14,800

[9/19 10 PM Sale] Jeremejevite from Namibia 0.053ct Loose Stone with Appraisal Report Sale price¥14,800

[Available 9/19 at 22:00] Jeremejevite from Namibia, 0.045ct Loose Stone with Identification Report Sale price¥15,800

[Available 9/18 at 22:00] Brazilian Bicolor Citrine 4.027ct Loose Gemstone Sale price¥3,980

[9/18 10 PM Sale] Brazilian Goshenite 4.3mm/0.376ct Loose Gemstone Sale price¥6,980

[9/18 10:00 PM Release] Brazilian Dendritic Agate 1.056ct Loose Stone Sale price¥3,980

アフガニスタン産アフガニスタン産ラズライトインソーダライト 0.425ctルース

[Available 9/18 10:00 PM] Lazulite in Sodalite from Afghanistan 0.425ct Loose Gemstone Sale price¥9,800

【Available 9/18, 10:00 PM】 Thai Black Star Sapphire 7.437ct Loose Gemstone Sale price¥19,800

[Sales start 9/18 at 22:00] Zimbabwe Bicolor Euclase 1.355ct Rough Stone Sale price¥25,800

[On sale 9/26 at 22:00] Mexican Cantera Opal 9.166ct loose gemstone Sale price¥29,800

[Available 9/19 at 10 PM] Mexican Cantera Opal 24.256ct Loose Stone Sale price¥69,800

[Available 9/19 at 10 PM] Oregon Sunstone 1.002ct Loose Gemstone Sale price¥6,980

[Available 9/19 at 10 PM] Brazilian Lavender Quartz (Skorolite) 1.154ct Loose Gemstone Sale price¥8,800

[Available 9/19 at 10 PM] Colombian Emerald with Pyrite, 0.634ct Raw Gemstone Sale price¥19,800

[On sale 9/19 at 22:00] Colombian Emerald with Pyrite, 0.981ct Raw Gemstone Sale price¥29,800

[Available 9/19 at 10:00 PM] 1.645ct Colombian Emerald Rough Stone Sale price¥49,800

[Available 9/19 at 10 PM] Mexican Fire Agate 5.272ct Loose Stone Sale price¥9,800

[Available 9/20 at 10:00 PM] Brazilian Alexandrite 0.054ct Loose Gemstone Sale price¥12,800

[9/26 10 PM Release] Sri Lankan Green Zircon 0.739ct Loose Stone Sale price¥14,800

[Available 9/26 at 22:00] Sri Lankan Green Zircon 0.786ct Loose Gemstone Sale price¥15,800

[9/26 10:00 PM Release] Sri Lankan Green Zircon 0.702ct Loose Stone Sale price¥14,800

[Available 9/26, 10:00 PM] Sri Lankan Green Zircon 4.5mm/0.474ct Loose Gemstone Sale price¥9,800

マダガスカル産アンデシン・ラブラドライト（通称名レインボームーンストーン） 0.521ctルース

[9/20 10:00 PM Release] Madagascar Andesine Labradorite (Common name: Rainbow Moonstone) 0.521ct Loose Stone Sale price¥8,800

[Available 9/20 at 10:00 PM] Synthetic Alexandrite 0.716ct Loose Stone Sale price¥15,800

[Available 9/20 at 10 PM] Synthetic Alexandrite 0.657ct Loose Stone Sale price¥14,800

[On sale 9/20 at 10 PM] Indian Black Moonstone 0.882ct Loose Stone Sale price¥8,800

【Available 9/22, 10:00 PM】 Colombian Emerald 0.078ct Loose Gemstone Sale price¥18,800

[9/22, 10 PM Sale] Malawi Moonstone 4.333ct Loose Gemstone Sale price¥19,800

[Available 9/22, 10 PM] Malawi Moonstone (Malawi Moonstone) 3.996ct Loose Gemstone Sale price¥18,800

【Available 9/22, 10:00 PM】Malawi Moonstone (Malawi Moonstone) 5.122ct Loose Stone Sale price¥25,800

[9/23 10 PM Sale] Mexican Fire Opal 0.824ct Loose Gemstone Sale price¥12,800

[Available 9/24 at 10 PM] Australian Black Opal 0.322ct Loose Gemstone Sale price¥16,800

[Available 9/30 at 10 PM] Tanzanian Almandine Garnet 1.210ct Loose Gemstone Sale price¥18,800

[Available 9/23 at 10 PM] Tanzanian Almandine Garnet 1.267ct Loose Gemstone Sale price¥14,800

【9/20 22:00 Release】 Madagascar Padparadscha Sapphire 3.6mm/0.281ct Loose Stone, DGL Certified Sale price¥35,800

マダガスカル産アンデシン・ラブラドライト（通称名レインボームーンストーン） 0.328ctルース

[Available 9/25 at 10 PM] Madagascar Andesine-Labradorite (Common name: Rainbow Moonstone) 0.328ct Loose Stone Sale price¥9,800

[Available Sept. 21, 10:00 PM] Colombian Emerald 0.267ct Loose Gemstone Sale price¥39,800

[Available 9/21, 10:00 PM] Colombian Emerald 0.152ct Loose Gemstone Sale price¥25,800

[Available Sept 21, 10 PM] Brazilian Mint Color Emerald 0.451ct Loose Stone Sale price¥15,800

【Available 9/21, 10 PM】 Zambian Emerald 0.199ct Loose Gemstone Sale price¥9,800

[Available 9/21 at 10 PM] Sri Lankan Blue Sapphire 5.3mm/0.754ct Loose Stone Sale price¥12,800

[Available 9/21, 10:00 PM] Nigerian Green Beryl 0.311ct Loose Gemstone Sale price¥7,980

[On sale 9/21 at 22:00] Ruby 0.176ct Loose Stone Sale price¥15,800

[On sale 9/21 at 22:00] Sri Lankan Green Zircon 0.403ct Loose Stone Sale price¥5,980

[Available 9/21, 10:00 PM] Brazilian Bicolor Topaz 3.098ct Loose Gemstone Sale price¥29,800

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.