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Below 0.1 ct

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Sold out Brazilian Paraiba Tourmaline 0.056ct Loose Stone (CuO:2.1%, MnO:2.2%)
Sold out Paraiba tourmaline from Brazil 0.023ct loose
Sold out 非加熱ブラジル産パライバトルマリン 0.046ctルース
Sold out ブラジル産パライバトルマリン 0.036ctルース
Sold out Brazilian Paraiba Tourmaline 0.035ct Loose (CuO:2.4%,MnO:2.5%)
Sold out カシミール産非加熱サファイア 0.080ctルース
Sold out Colombian non-oil emerald (NONE) 0.060ct loose GIA
Sold out Lazulite from Pakistan 2.5mm/0.063ct Loose Gemstone with Certificate
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 Brazilian Lazulite (blue spar) 0.030ct Loose with certificate
Sold out Auinite 2.3mm/0.060ct loose
Sold out アウイナイト 0.064ctルース
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 Canada Eudialyte 2.5mm/0.059ct Loose Stone with Certificate of Authenticity
Sold out 0.085ct loose, non-oil red beryl from the United States, GIA
coming soon Pink diamond 2.2mm/0.041ct loose (FANCY LIGHT PURPLE PINK, SI2)
Sold out Pink diamond 2.2mm/0.043ct loose (FANCY LIGHT PURPLISH PINK, SI2)
Sold out Lazulite (0.077ct) from Pakistan, loose
Sold out German Hauyne 2.2mm/0.035ct Loose Stone
Sold out 0.092ct loose stone with iolite and phlogopite (phlogopite)
Sold out Tanzanian Kornerupine (with Goethite) 2.6mm/0.068ct Loose
Sold out American oil-free red beryl 2.6mm/0.050ct loose GIA
Sold out 0.072 ct loose Bekily blue garnet (color-change garnet) from Madagascar
Sold out 0.076ct Loose Madagascar Bekily Blue Garnet (Color Change Garnet)
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
Sold out German Auchenite 0.083ct loose stone
Sold out Tanzanian Kornerupine 2.7mm/0.075ct Loose Stone
Sold out Colombian emerald 3.0mm/0.098ct loose stone
Sold out ベニトアイト 0.091ctルース
Sold out コロンビア産トラピッチェエメラルド(逆トラピッチェ) 0.084ctルース
Sold out アメリカ産ノンオイルレッドベリル 2.5mm/0.050ctルース GIA
Sold out ローレントーマサイト 0.028ctルース 日独
Sold out ローレントーマサイト 0.022ctルース 日独
Sold out ブラジル産アレキサンドライト 0.058ctルース
Sold out コロンビア産トラピッチェエメラルド(逆トラピッチェ) 0.053ctルース
Sold out レッドベリル 2.9mm/0.096ct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.