Login

0.1ct - 2.0ct

Sort by
Sold out オレンジベニトアイト 0.132ctルース（バイカラー）

Orange Benitoite 0.132ct loose (bicolor)

Sold out Benitoite 0.689ct loose《Mr. Yukio Shimizu, representative of Shimizu Precious Stones》 Patch included

Benitoite 0.689ct loose《Mr. Yukio Shimizu, representative of Shimizu Precious Stones》 Patch included

Sold out 【12522995掲載】ロシア産デマントイドガーネット（ホーステール認む） 0.610ctルース

Russian demantoid garnet (horsetail recognized) 0.610ct loose

Sold out 【12522529掲載】マンダリンガーネット 0.292ctルース

Mandarin Garnet 0.292ct loose

Sold out 【12522528掲載】マンダリンガーネット 0.291ctルース

Mandarin Garnet 0.291ct loose

Sold out 【11521944掲載】非加熱ピジョンブラッドルビー 0.560ctルース

Unheated pigeon blood ruby ​​0.560ct loose with AIGS

Sold out 【11521941掲載】スリランカ産ロイヤルブルーサファイア 0.360ctルース

Royal blue sapphire from Sri Lanka 0.360ct loose with AIGS

Sold out 【11521940掲載】スリランカ産ロイヤルブルーサファイア 0.860ctルース

Royal blue sapphire from Sri Lanka 0.860ct loose with AIGS

Sold out [Lottery Sale 12] [For Winners Only] [Product ID: 12563980] Madagascar Unheated Royal Blue Sapphire 1.030ct Loose Gemstone, AIGS

[Lottery Sale 12] [For Winners Only] [Product ID: 12563980] Madagascar Unheated Royal Blue Sapphire 1.030ct Loose Gemstone, AIGS

Sold out 0.278ct Alexandrite Loose Stone from Orissa, India, with Japan-Germany Gemological Report

0.278ct Alexandrite Loose Stone from Orissa, India, with Japan-Germany Gemological Report

coming soon [Lottery Sale 0731_10] Colombian Non-Oil Emerald 0.370ct Loose Stone GIA

[Lottery Sale 0731_10] Colombian Non-Oil Emerald 0.370ct Loose Stone GIA Sale price¥298,000
coming soon [Lottery Sale 0731_09] Burmese Ruby 1.020ct Loose Stone GIA

[Lottery Sale 0731_09] Burmese Ruby 1.020ct Loose Stone GIA Sale price¥188,000
[Listed as 12563874] Afghanistan Green Hauyne 0.185ct Loose Stone

[Listed as 12563874] Afghanistan Green Hauyne 0.185ct Loose Stone Sale price¥65,800
coming soon [Listed as 12563838] Loose Golden Beryl from Brazil, 1.369ct

[Listed as 12563838] Loose Golden Beryl from Brazil, 1.369ct Sale price¥7,980
coming soon 【12563834掲載】コロンビア産トラピッチェエメラルド 1.591ctルース

[Lottery Sale 0731_05] Colombian Trapiche Emerald 1.591ct Loose Gemstone with Japanese and German Gemological Certificates Sale price¥198,000
Sold out マダガスカル産バイカラーサファイア 0.506ctルース

Madagascar Bicolor Sapphire 0.506ct Loose
Sold out ジンバブエ産ユークレース 0.101ctルース

【12563376 listed】Euclase from Zimbabwe 0.101ct Loose
Sold out ブラジル産アレキサンドライト 0.220ctルース

[Listed as 12563398] Brazilian Alexandrite 0.220ct Loose Stone
Sold out ビルマ産ピジョンブラッドルビー 0.300ctルース

[12563504 Listed] Unheated Pigeon Blood Ruby from Burma 0.300ct Loose
Sold out スリランカ産パープルサファイア 0.634ctルース

【掲載番号12563727】スリランカ産パープルサファイア 0.634ctルース
Sold out 高知県産血赤珊瑚 1.524ctルース

[Sale starts July 16th at 10 PM] Kochi Prefecture produced blood red coral loose stone, 1.524ct
Sold out ブラジル産デュモルチェライトインクォーツ 0.957ctルース

[On sale July 16th at 10 PM] Brazilian Dumortierite in Quartz 0.957ct Loose Gemstone
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 0.294ctルース

[On sale July 17th, 10 PM JST] Australian Rainbow Lattice Sunstone Loose Gemstone, 0.294 ct
Sold out 南アフリカ産スギライト 0.806ctルース

[On Sale July 18th at 10 PM] South African Sugilite 0.806ct Loose Gemstone
Sold out ルビー 0.226ctルース

【Sale starts July 20 at 10 PM JST】Loose Mozambique Ruby, 0.226 ct
Sold out アメリカ産オレゴンサンストーン 1.441ctルース

[On sale July 20th, 10 PM JST] USA Oregon Sunstone 7.0mm/1.441ct Loose Gemstone
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 1.170ctルース

[On sale 7/18 10 PM JST] Australian Rainbow Lattice Sunstone 1.170ct Loose Stone
Sold out タンザニア産コーネルピン 0.196ctルース

[On sale July 19th at 10 PM] Tanzanian Kornerupine 0.196ct Loose Stone
coming soon [Listed in 12563739] Green Tourmaline Loose Stone from Brazil 0.906ct

[Listed in 12563739] Green Tourmaline Loose Stone from Brazil 0.906ct Sale price¥25,800

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.