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Less than 0.5 ct

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Sold out タンザニア産バイカラーゾイサイト 0.312ctルース
Sold out Tanzanian Bekiri Blue Garnet (Color Change Garnet) 0.102ct Loose Stone
Sold out Myanmar Red Spinel 0.196ct Loose Stone
Sold out Tanzanite from Tanzania 0.331ct loose stone
Sold out Myanmar color change zircon 0.439ct loose stone
Sold out 0.092ct loose stone with iolite and phlogopite (phlogopite)
Sold out Pink sapphire (with hematite) 0.271ct loose stone
Sold out Tanzanian Kornerupine (with Goethite) 2.6mm/0.068ct Loose
Sold out Diamond rough (makeable) 0.353ct rough
Sold out Diamond rough (makeable) 0.279ct rough
Sold out Sri Lankan Forsterite 0.231ct Loose Stone, Japan-German
Sold out ブラジル産パライバトルマリン 0.065ctルース (CuO:2.0%、MnO:2.6%)
Sold out American oil-free red beryl 2.6mm/0.050ct loose GIA
Sold out 【12552511掲載】ピンクダイヤモンド 0.296ctルース
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 Mexican Fire Opal 0.281ct Loose
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) 0.457ct原石
Sold out Andalusite 0.487ct loose
Sold out Pink tourmaline 0.341ct loose
Sold out Tanzanite from Tanzania 4.5mm/0.390ct Loose Stone AIGS
Sold out Cornflower Blue Sapphire 0.370ct Loose AIGS
Sold out 0.336 ct Tanzanian Kornerupine Loose Gemstone
Sold out 0.099ct Loose Grandidierite from Madagascar
Sold out Indian Parrot Chrysoberyl 4.2mm/0.347ct Loose Stone
Sold out Ruby 3.3mm/0.171ct Loose
Sold out Mexican Fire Opal 0.362ct Loose
Sold out 0.243ct Colombian Emerald Pair Loose Stones
Sold out 0.316 ct Tanzanian Bicolor Grossular Garnet Loose Stone
Sold out U.S. Red Beryl 3.2mm/0.111ct Loose Stone
Sold out U.S. Red Beryl 2.2mm/0.047ct Loose
Sold out USA Oregon Sunstone 5.0mm/0.443ct Loose
Sold out Grandidierite from Madagascar 0.269ct loose stone
Sold out Paraiba tourmaline from Brazil 0.097ct loose
Sold out Tanzanian Tanzanite 4.3mm/0.311ct Loose Stone
Sold out Brazilian Imperial Topaz, 0.353 ct loose stone
Sold out Burmese Ice Jadeite, 0.408ct loose stone
Sold out Kenyan Tsavorite 0.347ct Loose Stone
Sold out Pigeon blood ruby ​​0.310ct loose
Sold out Pigeon's Blood Ruby 4.0mm/0.230ct Loose AIGS
Sold out Tanzanite from Tanzania 0.417ct Loose Gemstone
Sold out パパラチアサファイア 0.191ctルース
Sold out Loose Oregon Sunstone from the USA, 0.318ct
Sold out Mexican Fire Opal (Faceted) 4.5mm/0.218ct Loose Stone
Sold out 0.278 ct loose Nigerian cobalt gahnite with Japanese and German appraisals
Sold out タンザニア産コーネルピン 0.173ctルース
Sold out Ruby 0.258ct loose

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.