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Sold out ナイジェリア産コバルトガーナイト 0.095ctルース
Sold out カシミール産サファイア 0.090ctルース
coming soon [Lottery Sale 0531_03] Unheated Kashmir Sapphire 2.7mm/0.090ct Loose GIA
Sold out カシミール産非加熱サファイア 0.080ctルース
Sold out Lazulite from Pakistan 2.5mm/0.063ct Loose Gemstone with Certificate
Sold out ピンクダイヤモンド 0.067ctルース(FANCY INTENSE PURPLE PINK, I-1)
Sold out マダガスカル産ベキリーブルーガーネット(カラーチェンジガーネット) 0.056ctルース
Sold out マダガスカル産ベキリーブルーガーネット(カラーチェンジガーネット) 0.089ctルース
Sold out ブラジル産パライバトルマリン 0.071ctルース
Sold out Brazilian Lazulite (blue spar) 0.030ct Loose with certificate
Sold out ピンクダイヤモンド 0.073ルース(FANCY DEEP PURPLISH PINK, SI1)
Sold out Pink diamond 0.030ct loose (FANCY PURPLE PINK, SI2)
Sold out Pink diamond 0.070ct loose (FANCY INTENSE PURPLE PINK, I1)
coming soon Canadian Eudialite 2.5mm/0.051ct Loose Stone with Certificate of Authenticity
Sold out Canadian Eudialyte 2.5mm/0.047ct Loose Stone with Certification
Sold out 0.085ct loose, non-oil red beryl from the United States, GIA
Sold out Lazulite (0.077ct) from Pakistan, loose
Sold out 0.092ct loose stone with iolite and phlogopite (phlogopite)
Sold out Tanzanian Kornerupine (with Goethite) 2.6mm/0.068ct Loose
Sold out 0.072 ct loose Bekily blue garnet (color-change garnet) from Madagascar
Sold out Russian Alexandrite 2.4mm/0.061ct Loose Stone
Sold out 0.099ct Loose Grandidierite from Madagascar
Sold out U.S. Red Beryl 2.2mm/0.047ct Loose
Sold out Canadian rough diamond (sawable) 0.099ct rough with trigon
Sold out American benitoite 0.076ct loose
Sold out American benitoite 0.076ct loose
Sold out ダイヤモンド 0.096ctルース(D, SI1)
Sold out Paraiba tourmaline from Brazil 0.066ct loose
Sold out Zimbabwean Euclase 2.2mm/0.065ct Loose Stone

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.