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Sold out Taaffeite from Myanmar 2.8mm/0.114ct Loose Gemstone with Certificate
Sold out Brazilian Alexandrite 2.7mm/0.105ct Loose Stone
Sold out [Sakura Cut] Mongolian Andesine 8.0mm/1.652ct Necklace
Sold out 【さくらインカット】モンゴル産アンデシン 8.0mm/1.652ct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) 0.265ctルース
coming soon Bulgarian Sphalerite 5.8mm/1.058ct Loose Stone
Sold out YAG(イットリウムアルミニウムガーネット) 1.927ctルース
Sold out エメラルド 2.498ctルース
Sold out カナダ産ナトロライト 0.355ctルース
Sold out 【12562076掲載】アメリカ産オレゴンサンストーン 1.334ctルース
Sold out Oregon Sunstone from USA 7.1mm/1.366ct Loose
Sold out Bicolor Sphalerite 9.8mm/4.517ct loose
coming soon Canadian Eudialite 2.5mm/0.051ct Loose Stone with Certificate of Authenticity
Sold out Canadian Eudialyte 2.5mm/0.047ct Loose Stone with Certification
Sold out 【12562009掲載】スペイン産スファレライト 1.475ctルース
Sold out 【12562007掲載】スペイン産スファレライト 0.920ctルース
Sold out 【12562005掲載】スペイン産スファレライト 0.878ctルース
Sold out Indian alexandrite cat's eye 0.679ct loose
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 【12561988掲載】アメリカ産オレゴンサンストーン 1.169ctルース
Sold out 【12561986掲載】アメリカ産オレゴンサンストーン 1.273ctルース
Sold out 【12561985掲載】アメリカ産オレゴンサンストーン 1.290ct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 【12561982掲載】アメリカ産オレゴンサンストーン 1.362ctルース
Sold out 【12561980掲載】アメリカ産オレゴンサンストーン 2.418ct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 【12561930掲載】合成ルチル 1.982ctルース
Sold out 【12561929掲載】合成ルチル 0.505ctルース
Sold out Diamond 2.9mm/0.094ct Loose (E, VVS2, VeryGood)
Sold out Madagascar Grandidierite 0.109ct loose stone
Sold out マダガスカル産グランディディエライト 0.108ctルース
Sold out Synthetic rutile 3.9mm/0.329ct loose stone
Sold out 【12561174掲載】メキシコ産ファイアオパール(ファセットカット) 0.517ctルース
Sold out Brazilian Alexandrite 3.0mm/0.121ct Loose
Sold out Myanmar Red Spinel 0.196ct Loose Stone
Sold out [Sakura In-Cut] Oregon Sunstone from the United States, 6.0mm/0.638ct 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) 0.989ctルース
Sold out 0.092ct loose stone with iolite and phlogopite (phlogopite)
Sold out Tanzanian Kornerupine (with Goethite) 2.6mm/0.068ct Loose
Sold out [Sakura InCut] Synthetic Sapphire 2.610ct Loose Stone (Synthetic Pink Sapphire)
Sold out Congo Cobalt Calcite 7.5mm/1.791ct Loose Stone
Sold out Tanzanite from Tanzania 4.5mm/0.390ct Loose Stone AIGS
Sold out Ruby 3.3mm/0.171ct Loose
Sold out U.S. Red Beryl 3.2mm/0.111ct Loose Stone
Sold out U.S. Red Beryl 2.2mm/0.047ct Loose
Sold out USA Oregon Sunstone 5.0mm/0.443ct Loose
Sold out Madagascar Sphene 4.5mm/0.509ct Loose Gemstone
Sold out Pigeon blood ruby ​​0.310ct 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.