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Sold out 1.676ct loose Oregon sunstone from the United States
Sold out US Oregon Sunstone, 1.640 ct, Loose
Sold out US Oregon Sunstone, 1.640 ct, Loose
Sold out USA Ant Hill Garnet 4.0mm/0.277ct Loose Stone
Sold out American Anthill Garnet 5.0mm/0.641ct Loose
Sold out Unmounted American Anthill Garnet, 4.0mm/0.269ct
Sold out Anthill garnet from the USA (with forsterite) 0.578ct loose
Sold out Golden Hill Turquoise from Kazakhstan, 2.235ct loose stone
Sold out Golden Hill Turquoise from Kazakhstan, 2.882ct loose stone
Sold out Golden Hill Turquoise from Kazakhstan, 2.524ct Loose Stone
Sold out [Sakura In-Cut] Sapphire from Ratnapura, Sri Lanka, 6.0mm/0.839ct Loose
Sold out Fun Gem Gacha! 💎 Get diamonds (normally 29,800 yen) (D/VS/3EX H&C with Medium Certificate), special cut Oresund and Unloved, and more! (Multiple purchase discounts available)
Sold out [Koshu Precious Stones plusthree] Brazilian Garden Quartz 47.809ct Loose
Sold out 18K Yellow Gold Lavender Tanzanite 3.5mm/0.211ct Diamond Ring
Sold out Native Copper (1 rough stone) (average 22 carats) {Multiple purchase discounts available}
coming soon ガーデンクォーツ 23.495ctルース
Sold out トリフィライトインクォーツ 13.378ctルース
Sold out パイライトインクォーツ 34.864ctルース
Sold out スモーキークォーツ 0.691ct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) 1.447ct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) 1.665ct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 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 タンザニア産コーネルピン 0.173ctルース
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 ザンビア産アメジスト 29.357ct原石
Sold out ザンビア産アメジスト 39.112ct原石
Sold out Bicolor tourmaline 3.242ct rough stone from Afghanistan
Sold out オレゴンサンストーン 0.513ctルース
Sold out 0.278 ct loose Nigerian cobalt gahnite with Japanese and German appraisals
Sold out Afghanistan Lapis Lazuli 11mm/5.263ct Loose Stone
Sold out Brazilian Dumortierite in Quartz 1.516ct Loose Gemstone
Sold out パパラチアサファイア 0.191ctルース
Sold out Tanzanite from Tanzania 0.417ct Loose Gemstone
Sold out 0.933 ct loose Brazilian aventurine beryl
Sold out Pigeon's Blood Ruby 4.0mm/0.230ct Loose AIGS
Sold out Pigeon blood ruby ​​0.310ct loose
Sold out Madagascar Sphene 4.5mm/0.509ct Loose Gemstone
Sold out Kenyan Tsavorite 0.347ct Loose Stone
Sold out Burmese Ice Jadeite, 0.408ct loose stone
Sold out Brazilian Imperial Topaz, 0.353 ct loose stone
Sold out Brazilian Rhodonite in Quartz 8.6mm/1.865ct Loose Stone
Sold out Grandidierite from Madagascar 0.269ct loose stone
Sold out USA Oregon Sunstone 5.0mm/0.443ct Loose
Sold out U.S. Red Beryl 2.2mm/0.047ct Loose
Sold out U.S. Red Beryl 3.2mm/0.111ct 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.