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Sold out 0.742ct Bicolor Kyanite Loose Stone from Nepal
Sold out Mexican Fire Opal 0.362ct Loose
Sold out スモーキークォーツ 0.691ctルース
coming soon ガーデンクォーツ 23.495ctルース
Sold out [Sakura In-Cut] Sapphire from Ratnapura, Sri Lanka, 6.0mm/0.839ct Loose
Sold out US Oregon Sunstone, 1.640 ct, Loose
Sold out US Oregon Sunstone, 1.640 ct, Loose
Sold out USA Oregon Sunstone 2.160ct Loose
Sold out Mexican Water Opal 4.8mm/0.289ct Loose
Sold out #VALUE!
Sold out キャシテライト 0.571ctルース
Sold out Star Ruby from Sri Lanka, 5.0mm/1.062ct Loose Stone, with Identification Report
Sold out Madagascar Andesine Labradorite (commonly known as Rainbow Moonstone) 4.867ct Loose Stone
Sold out Madagascar Andesine Labradorite (commonly known as Rainbow Moonstone) 4.894ct Loose Stone
Sold out Madagascar Andesine Labradorite (also known as Rainbow Moonstone) 0.491ct Loose Stone
Sold out Diamond 0.120ct loose (G, VS2, Excellent H&C)
Sold out ナイジェリア産モルガナイト 0.889ctルース
Sold out Unheated Brazilian Bicolor Topaz (Bicolor Blue Topaz) 2.884ct Loose Gemstone
Sold out Indian Parrot Chrysoberyl Cat's Eye 1.225ct Loose
Sold out German Auchenite 0.083ct loose stone
Sold out [On Sale at 10 PM on December 7th] Rainbow Garnet (Andradite Garnet) 5.4mm/0.771ct Loose Stone from Tenkawa Village, Nara Prefecture
Sold out [12/10 22:00] Mali Garnet (Grossular/Andradite Garnet) 1.008ct Loose Stone from the Republic of Mali with Certificate of Authenticity
Sold out [Sakura In-Cut] Mongolian Color Change Andesine 6.0mm/0.655ct Loose Stone
Sold out Red Coral from Kochi Prefecture (6.833ct Loose Stone)
Sold out Internally Flawless Diamond (H&C) 3.8mm/0.210ct Loose (F, IF, 3 Excellent H&C) GIA & Chuho
Sold out ブラジル産ロードナイト 2.126ctルース 日独鑑
Sold out 【金平糖】アイオライト 3.170ctルース
Sold out レッドベリル 2.9mm/0.096ctルース
Sold out Red beryl 0.173ct loose
Sold out 中国産シンシャ(辰砂・シナバー) 1.162ctルース
Sold out ジンバブエ産バイカラーユークレース 0.206ctルース
Sold out グレートルマリン 0.486ctルース 鑑別書
Sold out 加熱ルビー 4.5mm/0.430ctルース GIT
Sold out タンザナイト 1.747ctルース
Sold out ロシア産デマントイドガーネット(ホーステール認む) 0.110ctルース
Sold out ロシア産アレキサンドライト 0.074ctルース
Sold out タンザニア産スペサルティンガーネット 0.383ctルース
Sold out メキシコ産ファイアオパール 0.345ctルース
Sold out ホーランダイトインクォーツ 7.300ctルース
Sold out ドミニカ共和国産ラリマー 2.472ctルース
Sold out パパラチアサファイア 0.376ctルース
Sold out ロシア産デマントイドガーネット(ホーステール認む) 0.075ctルース
Sold out ロシア産デマントイドガーネット(ホーステール認む) 2.5mm/0.073ctルース
Sold out ロシア産アレキサンドライト 0.058ctルース
Sold out インド産アンデシン・ラブラドライト(通称名 レインボームーンストーン) 0.450ctルース
Sold out 【KEN氏】アンデシン 3.430ctルース
Sold out カンボジア産カラーレスジルコン 0.905ctルース
Sold out ナイジェリア産モルガナイト 1.149ctルース

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.