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Under 1.0 ct

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Sold out コロンビア産ノンオイルエメラルド 0.535ctルース
Sold out ピンクトルマリン 0.915ct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) 0.147ct原石
Sold out American Benitoite 2.8mm/0.104ct Loose Stone
Sold out マリ共和国産マリガーネット(グロッシュラー/アンドラダイト・ガーネット) 0.399ctルース
Sold out サファリン 0.320ctルース
Sold out ブラジル産パライバトルマリンインクォーツ 0.708ctルース
Sold out カラーチェンジダイアスポア 0.729ctルース
Sold out Andalusite 0.487ct loose
Sold out タンザニア産アンデシン・ラブラドライト(通称名 レインボームーンストーン) 0.928ctルース
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 Sweet Home Mine Rhodochrosite 0.677ct Loose Gemstone
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 Afghan Kunzite 0.606ct Loose Stone
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 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 Madagascar Sphene 4.5mm/0.509ct Loose Gemstone
Sold out Pigeon blood ruby ​​0.310ct loose
Sold out Pigeon's Blood Ruby 4.0mm/0.230ct Loose AIGS
Sold out 0.933 ct loose Brazilian aventurine beryl
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 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 オレゴンサンストーン 0.513ctルース
Sold out タンザニア産コーネルピン 0.173ctルース
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 Ruby 0.258ct loose
Sold out スモーキークォーツ 0.691ctルース
Sold out [Sakura In-Cut] Sapphire from Ratnapura, Sri Lanka, 6.0mm/0.839ct Loose
Sold out Anthill garnet from the USA (with forsterite) 0.578ct loose
Sold out Unmounted American Anthill Garnet, 4.0mm/0.269ct
Sold out American Anthill Garnet 5.0mm/0.641ct Loose
Sold out USA Ant Hill Garnet 4.0mm/0.277ct 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.