Skip to content

Out of stock

Sort by

Sold out Mali Garnet (Grossular/Andradite Garnet) from Mali 0.359ct Loose Stone
Sold out デュモルチェライトインクォーツ 3.814ct原石
Sold out Brazilian indicolite tourmaline 0.674ct loose stone
Sold out タンザニア産レピドライト 1.035ctルース
Sold out インド産カバンサイト 2.163ctルース
Sold out ブラジル産インペリアルトパーズ 2.093ctルース
Sold out ブラジル産インペリアルトパーズ 0.359ctルース
Sold out Lazurite in quartz 0.353ct loose
Sold out Lazurite in quartz 0.877ct loose
Sold out Lazurite in quartz 0.959ct loose
Sold out Blue tourmaline 0.369ct loose Japanese-German book
Sold out Myanmar orange jade (jade) 0.531ct loose
Sold out ベトナム産非加熱シルキーピンクサファイア 0.202ctルース
Sold out ジンバブエ産バイカラーユークレース 0.197ctルース
coming soon チベット産バイカラーアンデシン 1.856ctルース
Sold out Canadian rough diamond (sawable) 0.099ct rough with trigon
Sold out 0.628ct Pink Star Sapphire Loose Gemstone from Sri Lanka
Sold out USA Oregon Sunstone 1.869ct Loose
Sold out USA Oregon Sunstone 2.160ct Loose
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 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) 1.119ct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

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.