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¥10,000 - ¥30,000

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ピンクトルマリン 1.157ctルース

Pink tourmaline 1.157ct loose stone Sale price¥12,800
ロシア産デマントイドガーネットキャッツアイ（ホーステール認む） 0.200ctルース

Russian Demantoid Garnet Cat's Eye (Horsetail Recognized) 0.200ct Loose Sale price¥18,800
スリランカ産シリマナイト 1.704ctルース

Sillimanite from Sri Lanka 1.704ct loose stone Sale price¥18,800
合成アレキサンドライト 0.414ctルース

【Sale starts May 17th, 10 PM JST】Synthetic Alexandrite 0.414ct Loose Stone Sale price¥12,800
コロンビア産エメラルド 0.145ctルース

Colombian emerald 0.145ct loose stone with precious stone Sale price¥29,800
ドイツ産アウイナイト 0.070ctルース

German Awinite 0.070ct loose stone Sale price¥29,800
[On sale May 28th at 10 PM] "Bungo to Alchemist" x KARATZ Collaboration Jewelry Vol. 4: Bungo Ring [Takiji Kobayashi Model Ring]

[On sale May 28th at 10 PM] "Bungo to Alchemist" x KARATZ Collaboration Jewelry Vol. 4: Bungo Ring [Takiji Kobayashi Model Ring] Sale priceFrom ¥25,800
Jeremejevite 0.201ct loose stone

Jeremejevite 0.201ct loose stone Sale price¥29,800
マダガスカル産アパタイトキャッツアイ 2.800ctルース

[On sale May 24th at 10 PM] Madagascar Apatite Cat's Eye 2.800ct Loose Gemstone, Nissaiju Sale price¥29,800
スリランカ産クリソベリルキャッツアイ 0.490ctルース

[Sale on 5/24 at 10 PM] Sri Lankan Chrysoberyl Cat's Eye 4.1mm/0.490ct Loose Stone Sale price¥15,800
モザンビーク産非加熱ルビー 0.135ctルース

Unheated Mozambique Ruby 2.7mm/0.135ct Loose Sale price¥19,800
Mozambique pink spinel 0.670ct loose stone

Mozambique pink spinel 0.670ct loose stone Sale price¥22,800
グリーンランド産サファイア 0.592ctルース

Greenland sapphire 0.592ct loose stone Sale price¥18,800
ブラジル産パライバトルマリン 0.071ctルース

Paraiba tourmaline from Brazil 0.071ct loose Sale price¥19,800
合成モアッサナイト 8.679ctルース

Synthetic Moissanite 8.679ct loose stone Sale price¥29,800
高知県産血赤珊瑚 21.156ct原石

[On sale June 3rd, 10 PM JST] Kochi Prefecture-produced oxblood coral, 21.156 ct raw coral Sale price¥25,800
coming soon 【12563213掲載】高知県産血赤珊瑚 16.659ct原石

[On Sale June 8th at 10 PM] Kochi Prefecture Blood Coral 16.659ct Branch (Raw Material) Sale price¥18,800
coming soon 【12563214掲載】高知県産血赤珊瑚 20.726ct原石

[On Sale 6/8, 10 PM JST] Kochi Prefecture Harvested Red Coral 20.726ct Branch (Raw Material) Sale price¥18,800
coming soon 【12563218掲載】高知県産血赤珊瑚 1.879ctルース

[On sale June 8th at 10 PM JST] Kochi Prefecture-produced oxblood coral, 1.879 ct loose stone Sale price¥18,800
coming soon 【12563219掲載】高知県産血赤珊瑚 1.975ctルース

【Sales Start: June 8th, 10 PM JST】Kochi Prefecture-produced Red Coral, 1.975ct Loose Stone Sale price¥18,800
coming soon 【12563220掲載】高知県産血赤珊瑚 2.187ctルース

[Sales start 10 PM on June 8th] High-Grade Red Coral from Kochi Prefecture, 2.187ct Loose Stone Sale price¥19,800
coming soon 【12563224掲載】高知県産血赤珊瑚 2.423ctルース

[Sales start 10:00 PM on June 8th] Kochi Prefecture Production Blood Red Coral Loose Stone 2.423ct Sale price¥22,800
モザンビーク産ルビー 0.464ctルース 鑑別書

[On Sale June 2nd, 10 PM JST] Mozambique Ruby 0.464ct Loose Gemstone with Identification Report Sale price¥29,800
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） 1.101ctルース

[On sale May 30th, 10 PM JST] Madagascar Andesine-Labradorite (commonly known as Rainbow Moonstone) 6.0mm/1.101ct loose stone Sale price¥16,800
ブラジル産アレキサンドライト 0.128ctルース

[On sale June 5th at 10 PM] Brazilian Alexandrite 0.128ct Loose Stone Sale price¥29,800
ブラジル産シーフォームトルマリン 0.334ctルース

[On sale June 6, 10 PM JST] Brazilian Seafoam Tourmaline 0.334ct Loose Stone Sale price¥16,800
ブラジル産シーフォームトルマリン 0.280ctルース

[On sale May 31, 10 PM JST] Brazilian Seafoam Tourmaline 4.1mm/0.280ct Loose Sale price¥15,800
ブラジル産シーフォームトルマリン 0.319ctルース

[On sale May 30th at 10 PM] Brazilian Seafoam Tourmaline 4.2mm/0.319ct Loose Stone Sale price¥17,800
ブラジル産シーフォームトルマリン 0.303ctルース

【Sale Starts May 30th at 10 PM JST】Brazilian Seafoam Tourmaline 4.1mm/0.303ct Loose Stone Sale price¥16,800
ケニア産ツァボライト 0.357ctルース

[On sale May 31, 10 PM JST] Tsavorite from Kenya 4.0mm/0.357ct loose stone Sale price¥12,800
ケニア産ツァボライト 0.386ctルース

[On sale May 30th at 10 PM] Kenyan Tsavorite 4.1mm/0.386ct Loose Stone Sale price¥15,800
ケニア産ツァボライト 0.505ctルース

[On sale June 4th at 10 PM] Kenyan Tsavorite 0.505ct Loose Stone Sale price¥19,800
アフガニスタン産ハックマナイト 0.093ctルース

[On sale May 30th at 10 PM] Afghan Hackmanite, 0.093ct loose stone Sale price¥16,800
Sold out アフガニスタン産ハックマナイト 0.171ctルース

[On sale May 30th at 10 PM] Afghan Hackmanite 0.171ct Loose Stone
アフガニスタン産ハックマナイト 0.123ctルース

[Sale on June 4th at 10 PM JST] Afghan Hackmanite, 0.123ct Loose Stone Sale price¥19,800
ダイヤモンド 0.117ctルース(D, VVS-2, VeryGood)

[On sale June 1st at 10 PM] Diamond 3.1mm/0.117ct Loose (D, VVS-2, Very Good) Sale price¥23,800
ダイヤモンド 0.145ctルース(F, VS-1, VeryGood)

[Sale from 10 PM on June 4th] Diamond 3.5mm/0.145ct Loose (F, VS-1, VeryGood) Sale price¥26,800
タンザニア産グリーンゾイサイト 0.709ctルース

Tanzania Green Zoisite 0.709ct Loose Stone Sale price¥16,800
Sri Lankan Blue Sapphire 0.519ct Loose

Sri Lankan Blue Sapphire 0.519ct Loose Sale price¥14,800
Madagascar pink sapphire 0.346ct loose stone

Madagascar pink sapphire 0.346ct loose stone Sale price¥15,800
Madagascar Blue Sapphire 0.302ct Loose

Madagascar Blue Sapphire 0.302ct Loose Sale price¥15,800
マダガスカル産イエローサファイア 0.417ctルース

Madagascar Yellow Sapphire 4.4mm/0.417ct Loose Sale price¥14,800
Paraiba tourmaline from Brazil 0.023ct loose

Paraiba tourmaline from Brazil 0.023ct loose Sale price¥19,800
ブラジル産パライバトルマリン 0.018ctルース

Paraiba tourmaline from Brazil 0.018ct loose Sale price¥12,800
Color change sapphire 0.473ct loose stone (purple sapphire)

Color change sapphire 0.473ct loose stone (purple sapphire) Sale price¥25,800
タンザニア産コーネルピン 0.213ctルース

Tanzanian Kornerupine 0.213ct loose stone Sale price¥12,800
Paraiba tourmaline from Brazil 0.049ct loose

Paraiba tourmaline from Brazil 0.049ct loose Sale price¥19,800
Paraiba tourmaline from Brazil 0.061ct loose

Paraiba tourmaline from Brazil 0.061ct loose Sale price¥25,800

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.