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Sold out USA Oregon Sunstone 5.0mm/0.443ct Loose
Sold out U.S. Red Beryl 2.2mm/0.047ct Loose
Sold out Madagascar Sphene 4.5mm/0.509ct Loose Gemstone
Sold out U.S. Red Beryl 3.2mm/0.111ct Loose Stone
Sold out 0.316 ct Tanzanian Bicolor Grossular Garnet Loose Stone
Sold out Burmese Ice Jadeite, 0.408ct loose stone
Sold out K18PG Thai Pigeon Blood Ruby 0.38ct Ring AIGS
Sold out [Sakura In-Cut] Oregon Sunstone from the United States, 6.0mm/0.638ct Loose
Sold out Australian boulder opal 15.004ct loose stone
Sold out Colombian emerald 10.940ct rough stone
Sold out Congo Cobalt Calcite 7.5mm/1.791ct Loose Stone
Sold out Pakistani Triplite 1.107ct Loose Stone
Sold out Afghanistan Bicolor Beryl 9.100ct Loose Stone
Sold out Myanmar color change zircon 0.439ct loose stone
Sold out Tanzanian zircon, 1.672ct loose
Sold out Rainbow Garnet (Andradite Garnet) from Tenkawa Village, Nara Prefecture 4.8mm/0.612ct Loose
Sold out 【12561913掲載】オーストラリア産ブラックオパール 0.221ctルース
Sold out Amber / Copal 41.008 ct Loose (with insect inclusion)
Sold out オーストラリア産ブラックオパール 0.565ctルース
Sold out Tanzanite from Tanzania 0.331ct loose stone
Sold out Unmounted American Anthill Garnet, 4.0mm/0.269ct
Sold out Golden Hill Turquoise from Kazakhstan, 2.524ct Loose Stone
Sold out 0.278 ct loose Nigerian cobalt gahnite with Japanese and German appraisals
Sold out Brazilian Dumortierite in Quartz 1.516ct Loose Gemstone
Sold out Sri Lankan Ratotta Topaz 7.709ct Loose (White Topaz)
Sold out アフガニスタン産ハックマナイト 0.111ctルース
Sold out ブラジル産ティンカーベルクォーツ(ピンクファイヤークォーツ) 3.089ctルース
Sold out ブラッドショットアイオライトサンストーン 1.250ctルース
Sold out Brazilian Alexandrite 3.0mm/0.121ct Loose
Sold out Lazulite (0.077ct) from Pakistan, loose
Sold out Montana Sapphire 0.449ct loose (bicolor sapphire)
Sold out Montana sapphire 0.359ct loose (blue sapphire)
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) 0.960ctルース
Sold out オーストラリア産レインボーラティスサンストーン 1.013ctルース
Sold out Indian alexandrite cat's eye 0.679ct loose
Sold out Indian alexandrite cat's eye 0.422ct loose
Sold out 【12561979掲載】ブラジル産デュモルチェライトインクォーツ 1.220ctルース
Sold out 【12561983掲載】アメリカ産オレゴンサンストーン 1.325ctルース
Sold out 【12561976掲載】ブラジル産デュモルチェライトインクォーツ 1.392ctルース
Sold out 【12561951掲載】アメリカ産アントヒルガーネット 0.370ctルース
Sold out 【12561946掲載】ブラジル産エメラルドインクォーツ 2.358ctルース
Sold out 【12561943掲載】ブラジル産ティンカーベルクォーツ(ピンクファイヤークォーツ) 2.360ctルース
Sold out 【12561973掲載】ブラジル産デュモルチェライトインクォーツ 2.446ctルース
Sold out 【12561989掲載】アメリカ産オレゴンサンストーン 0.793ctルース
Sold out K18YG Russian Demantoid Garnet (horsetail inclusion) 4mm/0.382ct, Bekily Blue Garnet Ring
Sold out [12548259 published] Padparadscha sapphire 0.524ct loose
Sold out バイカラートルマリン 0.974ctルース
Sold out Bekily Blue Garnet from Madagascar (color change garnet) 0.163ct 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.