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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 Pink Diamond 0.139ct Loose (FANCY PURPLISH PINK, I1)
Sold out Pt950 Bicolor Sapphire Pendant Top (Necklace Top)
Sold out Tanzanite from Tanzania 4.5mm/0.390ct Loose Stone AIGS
Sold out Cornflower Blue Sapphire 0.370ct Loose AIGS
Sold out Brazilian Yellow Beryl 1.473 ct Loose Stone
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 Ruby 3.3mm/0.171ct 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 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 Rhodonite in Quartz 8.6mm/1.865ct 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 Brazilian Dumortierite in Quartz 1.516ct Loose Gemstone
Sold out Afghanistan Lapis Lazuli 11mm/5.263ct 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 Bicolor tourmaline 3.242ct rough stone from Afghanistan
Sold out ザンビア産アメジスト 39.112ct原石
Sold out ザンビア産アメジスト 29.357ct原石
Sold out フィンランド産ラブラドライト(スペクトロライト) 6.335ct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 カザフスタン産ストロベリークォーツ 1.536ctルース
Sold out 奈良県天川村産レインボーガーネット(アンドラダイトガーネット) 1.665ctルース
Sold out Ruby 0.258ct loose
Sold out 奈良県天川村産レインボーガーネット(アンドラダイトガーネット) 1.447ctルース
Sold out スモーキークォーツ 0.691ctルース
Sold out パイライトインクォーツ 34.864ctルース
Sold out トリフィライトインクォーツ 13.378ctルース
coming soon ガーデンクォーツ 23.495ctルース
Sold out 18K Yellow Gold Lavender Tanzanite 3.5mm/0.211ct Diamond Ring
Sold out [Koshu Precious Stones plusthree] Brazilian Garden Quartz 47.809ct 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.