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Sold out Rough diamond (sawable) 0.466ct rough diamond (with trigon)
Sold out 0.245ct rough diamond (with trigon)
Sold out Mozambique Ruby 0.481ct Loose Stone with Certificate of Authenticity
Sold out Tanzanian Violet Sapphire 0.920ct Loose
Sold out Myanmar Color Change Zircon 5.3mm/1.043ct Loose Stone
Sold out Tanzanian Kornerupine 0.103ct Loose Stone
Sold out Cambodian Blue Zircon (Ratanakiri Blue) 0.674ct Loose Stone
Sold out Afghanistan Blue Tourmaline 4.0mm/0.268ct Loose Stone (Lagoon Tourmaline)
Sold out スリランカ産スターサファイア 5.225ctルース
Sold out スリランカ産スターサファイア 3.928ctルース
Sold out Unheated Burmese Ruby 0.227ct Loose Stone, Nikko Kan
Sold out Cornflower Blue Sapphire 4.5mm/0.430ct Loose Stone AIGS
Sold out 【12560374掲載】ブルートパーズキャッツアイ 22.761ctルース
Sold out Tanzanian Dragon Garnet 1.181ct Loose Stone
Sold out Tanzanian Dragon Garnet 1.042ct Loose Stone
Sold out Grandidierite from Madagascar 0.167ct loose stone
Sold out Grandidierite from Madagascar 0.169ct loose stone
Sold out Indian Parrot Chrysoberyl Cat's Eye 5.0mm/1.099ct Loose Stone
Sold out Indian Parrot Chrysoberyl Cat's Eye 1.225ct Loose
Sold out Indian Parrot Chrysoberyl Cat's Eye 5.6mm/1.715ct Loose Stone
Sold out Zimbabwean Euclase 2.2mm/0.065ct Loose Stone
Sold out 0.848ct Loose Brazilian Medusa Quartz (Paraiba Quartz)
Sold out 1.175ct loose Australian white opal
Sold out Unheated star ruby ​​from Myanmar, 0.617ct loose
Sold out Royal Blue Sapphire 1.00ct Loose AIGS
Sold out 0.361ct loose Brazilian Paraiba Tourmaline (CuO:1.0%, MnO:3.6%)
Sold out Brazilian Paraiba tourmaline 0.128ct loose stone (CuO: 1.7%, MnO: 3.4%)
Sold out Unheated Pigeon Blood Ruby 0.710ct Loose Stone AIGS
Sold out German Auchenite 0.083ct loose stone
Sold out German Apatite 3.1mm/0.100ct Loose Stone
Sold out Indian Moonstone 5.0mm/0.474ct Loose Stone (Rose Cut)
Sold out Mexican Fire Agate 8.033ct Loose Stone
Sold out American benitoite 0.147ct loose
Sold out American benitoite 0.127ct loose
Sold out American benitoite 0.133ct loose
Sold out American benitoite 0.187ct loose
Sold out ピンクサファイア 0.881ctルース
Sold out 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) 0.171ctルース
Sold out 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) 0.222ctルース
Sold out 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) 0.167ctルース
Sold out マダガスカル産バイカラーサファイア 0.259ctルース
Sold out マダガスカル産バイカラーサファイア 0.198ctルース
Sold out マダガスカル産バイカラーサファイア 0.212ctルース
Sold out ゴーシェナイト 1.989ctルース
Sold out トルコ産ダイアスポア 0.858ctルース
Sold out Brazilian kyanite in quartz 4.770ct loose
Sold out ブラジル産トラピッチェアメジスト 24.772ctルース
Sold out トルマリンキャッツアイ 0.910ctルース

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.