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Sold out ダイヤモンド原石(メイカブル) 0.247ct原石
Sold out [Sakura In-Cut] Oregon Sunstone from the United States, 6.0mm/0.685ct Loose
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 Colombian Trapiche Emerald 2.318ct Loose
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 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 スリランカ産エンスタタイト 2.159ctルース
Sold out オーストラリア産ボルダーオパール 4.470ctルース
Sold out 【サンジェ氏】パープルスピネル 0.995ctルース
Sold out メキシコ産ファイアオパール 4.5mm/0.244ctルース
Sold out ジルコン 0.416ctルース
Sold out クリソベリルキャッツアイ 2.283ctルース
Sold out モザンビーク産パライバトルマリン 0.229ctルース
Sold out チタン酸ストロンチウム 0.410ctルース
Sold out Internally Flawless Diamond (H&C) 3.8mm/0.210ct Loose (F, IF, 3 Excellent H&C) GIA & Chuho
Sold out Limited Edition of 10 Blue Gemstones! 💎 0.142ct Brazilian Paraiba Tourmaline, Euclase from Zimbabwe, 1.17ct Cobalt Spinel (Certificate of Authenticity: Color Shift), Benitoite, and More! Discounts Available for Multiple Purchases!
Sold out Diamond gacha featuring a 0.072ct FANCY DEEP pink diamond, normally priced at 70,000 yen, and ice blue diamonds equivalent to VS class. (Multiple purchase discounts available)
Sold out Have fun guessing what you'll receive! Gacha set of two gemstones (including rare stones) (Multiple purchase discounts available)
Sold out ナイジェリア産グリーンベリル 0.258ctルース
Sold out American peridot 0.334ct loose stone
Sold out 0.559ct Sri Lankan Chrysoberyl Cat's Eye Loose Stone
Sold out 2.393ct Synthetic Sapphire Loose Stone (Synthetic Blue Sapphire)
Sold out 2.077ct Synthetic Sapphire Loose Stone (Synthetic Blue Sapphire)
Sold out Synthetic sapphire 1.416ct loose stone (synthetic pink sapphire)
Sold out Synthetic spinel 1.793ct loose stone
Sold out Synthetic cobalt spinel 1.886ct loose stone
Sold out Spinel 0.310ct loose
Sold out Brazilian Goshenite 0.527ct loose stone
Sold out Colombian emerald rough stone 13.577ct
Sold out Colombian emerald 8.169ct rough stone
Sold out Colombian emerald rough stone 6.933ct
Sold out Indian Moonstone 5.1mm/0.426ct Loose Stone (Rose Cut)
Sold out Mali Garnet (Grossular/Andradite Garnet) 0.872ct Loose Stone from the Republic of Mali with Certificate of Authenticity
Sold out K18YGコロンビア産エメラルド0.062ct・ダイヤモンドリング

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.