Skip to content

Product list

Sort by

Sold out [Dandelion Cut] Madagascar Sphene 0.950ct Loose Stone
Sold out [Dandelion Cut] Madagascar Sphene 6.0mm/0.775ct Loose Stone
Sold out Madagascar sphene 6.0mm/0.868ct loose stone
Sold out [Sakura In-Cut] Oregon Sunstone from the United States, 6.0mm/0.685ct Loose
Sold out [Sakura Shape] Oregon Sunstone from the United States, 1.201ct Loose
Sold out Loose 1.206ct Oregon Sunstone from the USA
Sold out [Sakura Shape] Oregon Sunstone from the United States, 1.104ct Loose
Sold out [Sakura In-Cut] Mali Garnet (Grossular/Andradite Garnet) from the Republic of Mali, 6.0mm/0.920ct Loose Stone with Certificate of Authenticity
Sold out Mozambique ruby ​​0.537ct loose stone
Sold out Red coral (coral) 1.406ct loose stone
Sold out Red coral (coral) 1.467ct loose stone
Sold out Red Coral from Kochi Prefecture (6.833ct Loose Stone)
Sold out Sri Lankan blue sapphire 0.645ct loose stone
Sold out Australian black opal 0.623ct loose stone
Sold out ミャンマー産スピネルインマーブル 39.231ctルース
Sold out メキシコ産ファイアオパール 1.283ctルース
Sold out メキシコ産ファイアオパール 1.413ctルース
Sold out Colombian Trapiche Emerald 2.318ct Loose
Sold out オーストラリア産ホワイトオパール 4.170ctルース
Sold out Australian Black Opal 0.825 ct Loose Stone
Sold out Rainbow Garnet (Andradite Garnet) 7.0mm/2.135ct Loose Stone from Tenkawa Village, Nara Prefecture
Sold out Australian white opal 1.928ct loose
Sold out 1.837ct loose Australian black opal
Sold out Australian boulder opal 2.326ct loose
Sold out Brazilian bicolor tourmaline 7.017ct loose stone
Sold out Brazilian bicolor tourmaline 7.268ct loose stone
Sold out Zambian bicolor tourmaline 6.536ct loose stone
Sold out Madagascar Bicolor Sapphire 5.8mm/1.006ct Loose
Sold out Madagascar Bicolor Sapphire 4.5mm/0.637ct Loose
Sold out Madagascar Sapphire 4.6mm/0.472ct Loose
Sold out Madagascar Bicolor Sapphire 3.6mm/0.232ct Loose
Sold out Brazilian Dumortierite in Quartz 2.012ct Loose Stone
Sold out Brazilian Dumortierite in Quartz 1.995ct Loose Stone
Sold out Brazilian Dumortierite in Quartz 1.924ct Loose Stone
Sold out スペイン産アンダリュサイト 0.715ctルース
Sold out 【22602505掲載】K18YG ブラジル産アレキサンドライト 0.087ct ピンキーリング
Sold out K18PG ピジョンブラッドルビー 0.4ct ペンダントトップ(ネックレストップ)
Sold out ピジョンブラッドルビー 0.28ct リング AIGS
Sold out Pt950 パライバトルマリン 0.131ct リング
Sold out ジンバブエ産スフェーン 0.356ctルース
Sold out ジンバブエ産スフェーン 0.354ctルース
Sold out ジンバブエ産スフェーン 0.294ctルース
Sold out メキシコ産ファイアオパール(ファセットカット) 0.207ctルース
Sold out メキシコ産ファイアオパール(ファセットカット) 0.515ctルース
Sold out メキシコ産ファイアオパール(ファセットカット) 0.198ctルース
Sold out メキシコ産ファイアオパール(ファセットカット) 0.447ctルース
Sold out マダガスカル産グランディディエライト 0.042ctルース
Sold out マダガスカル産グランディディエライト 0.066ct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.