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Sold out 【32501846掲載】ダイヤモンド 0.290ctルース(J, VS1)
Sold out 0.084ct loose green diamond (FANCY GRAY GREEN, I-1)
Sold out K18YG ベニトアイト 0.342ct リング
Sold out Pt950 ベニトアイト 0.17ct リング
Sold out Kenyan Tsavorite 0.164ct Loose Stone
Sold out Brazilian London Blue Topaz 0.641ct Loose
Sold out Tanzanite from Tanzania 0.331ct loose stone
Sold out Tanzanite 0.505ct loose stone from Tanzania
Sold out Pakistani Triplite 1.107ct Loose Stone
Sold out 【12552511掲載】ピンクダイヤモンド 0.296ctルース
Sold out Pink Diamond 0.139ct Loose (FANCY PURPLISH PINK, I1)
Sold out Tanzanite from Tanzania 4.5mm/0.390ct Loose Stone AIGS
Sold out Brazilian Imperial Topaz, 0.353 ct loose stone
Sold out Kenyan Tsavorite 0.347ct Loose Stone
Sold out Tanzanite from Tanzania 0.417ct Loose Gemstone
Sold out Brazilian Dumortierite in Quartz 1.516ct Loose Gemstone
Sold out Bicolor tourmaline 3.242ct rough stone from Afghanistan
Sold out ブラジル産デュモルチェライトインクォーツ 0.852ctルース
Sold out 18K Yellow Gold Lavender Tanzanite 3.5mm/0.211ct Diamond Ring
Sold out Golden Hill Turquoise from Kazakhstan, 2.524ct Loose Stone
Sold out Golden Hill Turquoise from Kazakhstan, 2.882ct loose stone
Sold out Golden Hill Turquoise from Kazakhstan, 2.235ct loose stone
Sold out Canadian rough diamond (sawable) 0.099ct rough with trigon
Sold out デュモルチェライトインクォーツ 3.814ct原石
Sold out Loose 0.901ct Imperial Topaz from Brazil with certificate
Sold out Brazilian unheated pink imperial topaz (sherry pink) 0.594ct loose stone with certificate of authenticity
Sold out Brazilian unheated pink imperial topaz (sherry pink) 0.438ct loose stone with certificate of authenticity
Sold out 南アフリカ産ダイヤモンド(メイカブル) 0.193ct原石
Sold out 18K Yellow Gold American Peridot 0.339ct Diamond Ring
Sold out Brazilian Dumortierite in Quartz 1.736ct Loose
Sold out Brazilian Indicolite Tourmaline 0.342ct Loose
Sold out Kenyan Tsavorite 0.157ct Loose Gemstone
Sold out Brazilian bicolor tourmaline 1.016ct loose stone
Sold out ブラジル産ティンカーベルクォーツ(ピンクファイヤークォーツ) 6.004ctルース
Sold out マダガスカル産デマントイドガーネット 38.035ct原石
Sold out ダイヤモンド 0.096ctルース(D, SI1)
Sold out ダイヤモンド 0.126ctルース(F, VS2)
Sold out Paraiba tourmaline from Brazil 0.066ct loose
Sold out [Sakura In-Cut] Tanzanite from Tanzania 6.0mm/0.774ct Loose Stone
Sold out K18/Pt950 Brazilian Paraiba tourmaline 0.071ct diamond ring (K18YG, CuO: 1.9%, MnO: 2.2%)
Sold out 18K Yellow Gold Brazilian Paraiba Tourmaline 0.048ct Diamond Pinky Ring (CuO: 1.7%, MnO: 2.2%)
Sold out K18/Pt950 Brazilian Paraiba Tourmaline and Diamond Pendant Top (Necklace Top)
Sold out [Takeshi Yamamoto] Brazilian Dendritic Quartz 25.875ct Loose
Sold out 0.245ct rough diamond (with trigon)
Sold out Afghanistan Blue Tourmaline 4.0mm/0.268ct Loose Stone (Lagoon Tourmaline)
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 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%)

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.