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Sold out アメリカ産ペリドット 7.2mm/1.530ctルース

American Peridot 7.2mm/1.530ct Loose Stone
Sold out ロイヤルブルーサファイア 0.720ct原石

Royal Blue Sapphire 0.720ct Loose
Sold out ブラジル産ラズライト（天藍石） 0.200ctルース 日独鑑

Brazilian Lazurite 0.200ct Ruth Japanese-German Edition
Sold out Ruby 0.245ct loose

Ruby 0.245ct loose
Sold out マダガスカル産セレスタイト 4.425ctルース

Celestite from Madagascar 8.7mm/4.425ct loose stone
Sold out Pt900/Pt850 ブラジル産アレキサンドライト 0.2ct ペンダント（ネックレス）

Pt900/Pt850 Brazilian Alexandrite 0.2ct Diamond Pendant (Necklace)
Sold out ミャンマー産マスグラバイト 0.090ctルース GLT鑑

Myanmar Musgravite 0.090ct Loose GLT
coming soon [10/11 22:00 Sale] Madagascar Iolite 0.707ct Loose Stone

[10/11 22:00 Sale] Madagascar Iolite 0.707ct Loose Stone Sale price¥12,800
coming soon [10/12 22:00 Sale] Brazilian Paraiba Tourmaline 0.052ct Loose Stone

[10/12 22:00 Sale] Brazilian Paraiba Tourmaline 0.052ct Loose Stone Sale price¥29,800
coming soon [10/12 22:00 Sale] Sri Lankan Star Sapphire 1.093ct Loose

[10/12 22:00 Sale] Sri Lankan Star Sapphire 1.093ct Loose Sale price¥8,800
coming soon インターナリーフローレスダイヤモンド（H&C） 4.45mm/0.305ctルース(F, IF, 3Excellent H&C) GIA&中宝

[On Sale 10/12 at 10 PM] Internally Flawless Diamond (H&C) 4.45mm/0.305ct Loose (F, IF, 3 Excellent H&C) Sale price¥98,000
coming soon [10/12 22:00 Sale] Brazilian Unheated Pink Imperial Topaz (Sherry Pink) 0.231ct Loose

[10/12 22:00 Sale] Brazilian Unheated Pink Imperial Topaz (Sherry Pink) 0.231ct Loose Sale price¥18,800
coming soon キャシテライト 0.676ctルース

[10/12 22:00 Sale] Cassiterite 4.2mm/0.676ct Loose Stone with Certificate of Authenticity Sale price¥16,800
coming soon 【12560215掲載】ピジョンブラッドルビー 0.230ctルース

[10/12 22:00 Sale] Pigeon Blood Ruby 3.7mm/0.230ct Loose Stone AIGS Sale price¥39,800
coming soon [10/12 22:00 Sale] Pakistani Veirinite 0.145ct Loose Stone with Certificate of Authenticity

[10/12 22:00 Sale] Pakistani Veirinite 0.145ct Loose Stone with Certificate of Authenticity Sale price¥36,800
coming soon [10/12 22:00 Sale] Unheated Royal Blue Sapphire 0.640ct Loose AIGS

[10/12 22:00 Sale] Unheated Royal Blue Sapphire 0.640ct Loose AIGS Sale price¥158,000
coming soon ラボグロウンダイヤモンド（合成ダイヤモンド） 0.290ctルース(FANCY VIVID PINK, VS-2)

[On Sale at 10 PM on October 12th] Lab-Grown Diamond (Synthetic Diamond) 0.290ct Loose (FANCY VIVID PINK, VS-2) Sale price¥45,800
coming soon Dragon Garnet x 1 (3.5mm, round cut) {Multiple purchase discount available}

Dragon Garnet x 1 (3.5mm, round cut) {Multiple purchase discount available} Sale price¥3,980
coming soon 1 dragon garnet stone (4.5mm, round cut)

1 dragon garnet stone (4.5mm, round cut) Sale price¥5,980
coming soon 【10/11 22時販売】《限定15石》ファセットカット3石含む中国産シンシャ・辰砂1石ルース（全石鑑別書付き,平均1.02ct）1石ルース《複数購入割引有》

【10/11 22時販売】《限定15石》ファセットカット3石含む中国産シンシャ・辰砂1石ルース（全石鑑別書付き,平均1.02ct）1石ルース《複数購入割引有》 Sale price¥18,800
coming soon 【10/12 22時販売】《限定10石》ブルー石ガチャ（ブラジル産パライバトルマリン0.088ct、ジンバブエ産ユークレース、コバルトガーナイト）《複数購入割引有》

【10/12 22時販売】《限定10石》ブルー石ガチャ（ブラジル産パライバトルマリン0.088ct、ジンバブエ産ユークレース、コバルトガーナイト）《複数購入割引有》 Sale price¥7,980
coming soon 【9/12 22時販売】《限定7石》ロシア産ノンオイルエメラルド1石ルース(1.5-1.6ｍｍ,ステップカット)《複数購入割引有》

【9/12 22時販売】《限定7石》ロシア産ノンオイルエメラルド1石ルース(1.5-1.6ｍｍ,ステップカット)《複数購入割引有》 Sale price¥5,980

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.