Skip to content

Coming soon

Sort by

Sold out Indian Moonstone 5.0mm/0.474ct Loose Stone (Rose Cut)
Sold out Mexican Fire Agate 8.033ct Loose Stone
Sold out American benitoite 0.127ct loose
Sold out American benitoite 0.133ct loose
Sold out American benitoite 0.187ct loose
Sold out マダガスカル産バイカラーサファイア 0.259ctルース
Sold out マダガスカル産バイカラーサファイア 0.198ctルース
Sold out マダガスカル産バイカラーサファイア 0.212ctルース
Sold out ゴーシェナイト 1.989ctルース
Sold out Brazilian kyanite in quartz 4.770ct loose
Sold out ブラジル産トラピッチェアメジスト 24.772ctルース
Sold out オパール 0.595ctルース
Sold out Citrine 0.833ct loose stone
Sold out アメジスト 8.044ctルース
Sold out ダンビュライト 1.427ctルース
Sold out アクアマリンキャッツアイ 3.528ctルース
Sold out メキシコ産ファイアーアゲート 3.800ctルース
Sold out ベトナム産非加熱シルキーピンクサファイア 0.197ctルース
Sold out スターガーネット 14.600ct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) 1.058ctルース
Sold out マダガスカル産バイカラークリソベリル 1.590ctルース
Sold out Kunzite from Afghanistan 26.784ct loose
Sold out Brazilian dumortierite in quartz 4.592ct loose
Sold out Russian Demantoid Garnet (Horsetail) 4.2mm/0.325ct Loose Stone
Sold out [On Sale at 10 PM on December 7th] Rainbow Garnet (Andradite Garnet) 2.365ct Loose Stone from Tenkawa Village, Nara Prefecture
Sold out Madagascar Iolite 0.644ct Loose Stone
Sold out Brazilian Yellow Beryl 0.913ct Loose Stone
Sold out [On Sale at 10 PM on December 7th] Madagascar Andesine Labradorite Moonstone (also known as Rainbow Moonstone) 0.178ct Loose Stone
Sold out [12/7 22:00] Sri Lankan Yellow Sapphire 0.508ct Loose
Sold out [On Sale at 10 PM on December 9th] American Peridot 0.855ct Loose Stone (Lily Pad Inclusions)
Sold out Colombian emerald rough stone 11.155ct (with pyrite)
Sold out [12/6 22:00] Myanmar Spinel in Marble 61.204ct Loose Stone
Sold out ブラジル産フラワールチルインクォーツ 3.312ctルース
Sold out グリーンフローライト 38.074ctルース
coming soon Brazilian Alexandrite 0.239ct Loose Gemstone [Listed as 12564071]

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.