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バイカラーゾイサイト 0.581ctルース

Bicolor Zoisite 0.581ct loose Sale price¥12,800
スペイン産スファレライト 6.230ctルース

Spanish bicolor sphalerite 6.230ct loose Sale price¥69,800
デンドリティックアゲート 31.019ctルース

Dendritic Agate 31.019ct Ruth Japanese/German Sale price¥6,980
Chrome tourmaline 0.300ct loose stone

Chrome tourmaline 0.300ct loose stone Sale price¥2,980
ダイヤモンド原石（メイカブル） 0.247ct原石

Yellow diamond rough stone (makeable) 0.247ct rough stone Sale price¥22,800
メキシコ産カンテラオパール 15.542ctルース

Mexican cantera opal 15.542ct loose Sale price¥15,800
メキシコ産カンテラオパール 9.422ctルース

Mexican cantera opal 9.422ct loose Sale price¥25,800
メキシコ産カンテラオパール 7.563ctルース

Mexican cantera opal 7.563ct loose Sale price¥15,800
オーストラリア産ボルダーオパール 6.980ctルース

Australian boulder opal 6.980ct loose Sale price¥6,980
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） 0.696ctルース

Andesine Labradorite from Madagascar (commonly known as Rainbow Moonstone) 0.696ct loose Sale price¥6,980
【12546396掲載】スリランカ産ゲーサイトイントパーズ 3.200ctルース

Sri Lankan Goethite Into Topaz 3.200ct loose Sale price¥4,980
【12546393掲載】ブラジル産ユークレース 1.240ctルース

Brazilian Euclase 1.240ct loose Sale price¥19,800
[12/22 22:00] Mozambique Ruby 0.537ct Loose

[12/22 22:00] Mozambique Ruby 0.537ct Loose Sale price¥15,800
[12/22 22:00] Red Coral (Coral) 1.406ct Loose Stone

[12/22 22:00] Red Coral (Coral) 1.406ct Loose Stone Sale price¥12,800
[12/22 22:00] Red Coral (Coral) 1.467ct Loose Stone

[12/22 22:00] Red Coral (Coral) 1.467ct Loose Stone Sale price¥15,800
[12/22 22:00] Red Coral (Coral) 6.833ct Loose Stone

[12/22 22:00] Red Coral (Coral) 6.833ct Loose Stone Sale price¥39,800
[12/22 22:00] Sri Lankan Blue Sapphire 0.645ct Loose

[12/22 22:00] Sri Lankan Blue Sapphire 0.645ct Loose Sale price¥25,800
[12/22 22:00] Sri Lankan Star Sapphire 12.679ct Loose

[12/22 22:00] Sri Lankan Star Sapphire 12.679ct Loose Sale price¥158,000
[12/22 22:00] Brazilian Green Tourmaline 3.102ct Loose Stone

[12/22 22:00] Brazilian Green Tourmaline 3.102ct Loose Stone Sale price¥69,800
スリランカ産スターサファイア 5.066ctルース

[12/23 22:00] Sri Lankan Star Sapphire 5.066ct Loose Sale price¥69,800
オーストラリア産ブラックオパール 2.736ctルース

[12/23 22:00] Australian Black Opal 2.736ct Loose Sale price¥98,000
スリランカ産スターサファイア 3.821ctルース

[12/23 22:00] Sri Lankan Star Sapphire 3.821ct Loose Sale price¥79,800
メキシコ産ファイアオパール 1.283ctルース

[12/23 22:00] Mexican Fire Opal 1.283ct Loose Sale price¥29,800
メキシコ産ファイアオパール 1.413ctルース

[12/23 22:00] Mexican Fire Opal 1.413ct Loose Sale price¥39,800
オーストラリア産ホワイトオパール 4.170ctルース

[12/23 22:00] Australian White Opal 4.170ct Loose Sale price¥69,800
[12/21 22:00] Rainbow Garnet (Andradite Garnet) 7.0mm/2.135ct Loose Stone from Tenkawa Village, Nara Prefecture

[12/21 22:00] Rainbow Garnet (Andradite Garnet) 7.0mm/2.135ct Loose Stone from Tenkawa Village, Nara Prefecture Sale price¥12,800
[12/21 22:00] Sri Lankan Blue Sapphire 1.008ct Loose

[12/21 22:00] Sri Lankan Blue Sapphire 1.008ct Loose Sale price¥69,800
[12561695] Australian White Opal 1.928ct Loose

[12561695] Australian White Opal 1.928ct Loose Sale price¥39,800
[12/21 22:00] Mexican Cantera Opal 9.166ct Loose

[12/21 22:00] Mexican Cantera Opal 9.166ct Loose Sale price¥69,800
[12/21 22:00] Brazilian Bicolor Tourmaline 7.268ct Loose Stone

[12/21 22:00] Brazilian Bicolor Tourmaline 7.268ct Loose Stone Sale price¥158,000
[12/21 22:00] Zambian Bicolor Tourmaline 4.019ct Loose Stone

[12/21 22:00] Zambian Bicolor Tourmaline 4.019ct Loose Stone Sale price¥98,000
[12/21 22:00] Zambian Bicolor Tourmaline 6.536ct Loose Stone

[12/21 22:00] Zambian Bicolor Tourmaline 6.536ct Loose Stone Sale price¥128,000
[On Sale at 10 PM on December 21st] Madagascar Bicolor Sapphire 5.8mm/1.006ct Loose

[On Sale at 10 PM on December 21st] Madagascar Bicolor Sapphire 5.8mm/1.006ct Loose Sale price¥12,800
[12/17 22:00] Brazilian Dumortierite in Quartz 2.012ct Loose Stone

[12/17 22:00] Brazilian Dumortierite in Quartz 2.012ct Loose Stone Sale price¥14,800
[12/13 10 PM Sale] {Limited to 13 Stones} Tourmaline Gacha: Including Indigolite Tourmaline worth ¥50,000 and Rubellite worth ¥60,000. Plus, get one Canary Yellow Tourmaline. {Multiple Purchase Discounts Available}

[12/13 10 PM Sale] {Limited to 13 Stones} Tourmaline Gacha: Including Indigolite Tourmaline worth ¥50,000 and Rubellite worth ¥60,000. Plus, get one Canary Yellow Tourmaline. {Multiple Purchase Discounts Available} Sale price¥5,980
[12/12 10 PM Sale] Limited to 15 stones! Includes a rare UNEVEN Fancy color gemstone (normally ¥39,800) and a 0.428ct Fancy color gemstone (¥69,800). Get one loose yellow diamond! Discounts available for multiple purchases.

[12/12 10 PM Sale] Limited to 15 stones! Includes a rare UNEVEN Fancy color gemstone (normally ¥39,800) and a 0.428ct Fancy color gemstone (¥69,800). Get one loose yellow diamond! Discounts available for multiple purchases. Sale price¥3,980
オーストラリア産ボルダーオパール 4.470ctルース

Australian boulder opal 4.470ct loose Sale price¥25,800
Brazilian Medusa Quartz (Paraiba Quartz) 3.919ct loose

Brazilian Medusa Quartz (Paraiba Quartz) 3.919ct loose Sale price¥6,980
オレゴンサンストーン 1.157ctルース

Oregon Sunstone 1.157ct loose Sale price¥8,800
オパール 17.283ctルース

Yellow opal 17.283ct loose Sale price¥29,800
White topaz 16.06ct loose

White topaz 16.06ct loose Sale price¥25,800
Petalite 2.858ct loose

Petalite 2.858ct loose Sale price¥7,980
バイカラーグロッシュラーガーネット 0.782ctルース

Bicolor grossular garnet 0.782ct loose Sale price¥12,800
南アフリカ産ロードクロサイト 1.333ctルース

South African rhodochrosite 1.333ct loose Japanese-German edition Sale price¥98,000
[12/12-12/25 Shinjuku Marui Annex] Silver Chain 0.7mm [40cm]

[12/12-12/25 Shinjuku Marui Annex] Silver Chain 0.7mm [40cm] Sale price¥1,780
[12/12-12/25 Shinjuku Marui Annex] Layered Ring

[12/12-12/25 Shinjuku Marui Annex] Layered Ring Sale price¥16,500
[12/12-12/25 Shinjuku Marui Annex] Mark Pendant

[12/12-12/25 Shinjuku Marui Annex] Mark Pendant Sale price¥16,500
Dioptase from Namibia 3.1mm/0.132ct loose Japanese-German edition

Dioptase from Namibia 3.1mm/0.132ct loose Japanese-German edition Sale price¥55,800

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.