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Sold out Bolivian phosphophyllite 0.165ct loose stone with certificate

Bolivian phosphophyllite 0.165ct loose stone with certificate

Sold out [12560354] Zimbabwean Bicolor Euclase 0.206ct Loose Stone

[12560354] Zimbabwean Bicolor Euclase 0.206ct Loose Stone
Sold out ケニア産クロムトルマリン 0.501ctルース

Kenyan chrome tourmaline 0.501ct loose stone

Sold out 【12558576掲載】パキスタン産ヴェイリネナイト 0.150ctルース

Pakistan Veininite 0.150ct Loose Gemstone with Certificate
Sold out オーストラリア産ブラックオパール 3.871ctルース

Australian black opal, 3.871 ct, loose
Sold out 【12562382掲載】ジンカイト 1.059ctルース

Polish Zincite 1.059 ct Loose Stone, Nichidoku Appraisal

Sold out 【12562061掲載】アメリカ産ネプチュナイト 0.256ctルース

0.256ct Neptunite from the USA, with a certificate

Sold out 【32501846掲載】ダイヤモンド 0.290ctルース(J, VS1)

0.290ct loose diamond (J, VS1, Ashoka cut)

Sold out 0.084ct loose green diamond (FANCY GRAY GREEN, I-1)

0.084ct loose green diamond (FANCY GRAY GREEN, I-1)

Sold out ピンクサファリン 0.178ctルース

0.178ct Madagascar Pink Sapphire Loose Stone, Japan-German

Sold out パキスタン産ヴィータニエミアイト 0.184ctルース

Pakistani Vitaniemiite 0.184ct loose stone

Sold out Lazulite (0.077ct) from Pakistan, loose

Lazulite (0.077ct) from Pakistan, loose
Sold out [Sakura In-Cut] Oregon Sunstone from the United States, 6.0mm/0.638ct Loose

[Sakura In-Cut] Oregon Sunstone from the United States, 6.0mm/0.638ct Loose
Sold out [Yukinko Cut] Synthetic Sapphire 2.102ct Loose Stone

[Yukinko Cut] Synthetic Sapphire 2.102ct Loose Stone

Sold out [Yukinko Cut] Siberian Blue Quartz (Synthetic Quartz) 0.999ct Loose Stone

[Yukinko Cut] Siberian Blue Quartz (Synthetic Quartz) 0.999ct Loose Stone

Sold out Russian Alexandrite 2.4mm/0.061ct Loose Stone

Russian Alexandrite 2.4mm/0.061ct Loose Stone
Sold out Ruby 3.3mm/0.171ct Loose

Ruby 3.3mm/0.171ct Loose
Sold out Brazilian unheated pink imperial topaz (sherry pink) 0.594ct loose stone with certificate of authenticity

Brazilian unheated pink imperial topaz (sherry pink) 0.594ct loose stone with certificate of authenticity
Sold out Australian black opal 3.148ct loose

Australian black opal 3.148ct loose
Sold out 【12560350掲載】ジンバブエ産ユークレース 0.138ctルース

Zimbabwean Euclase 0.138ct Loose Stone
Sold out Mozambique Ruby 0.481ct Loose Stone with Certificate of Authenticity

Mozambique Ruby 0.481ct Loose Stone with Certificate of Authenticity
Sold out Tanzanian Violet Sapphire 0.920ct Loose

Tanzanian Violet Sapphire 0.920ct Loose
Sold out Unheated Burmese Ruby 0.227ct Loose Stone, Nikko Kan

Unheated Burmese Ruby 0.227ct Loose Stone, Nikko Kan
Sold out Grandidierite from Madagascar 0.169ct loose stone

Grandidierite from Madagascar 0.169ct loose stone
Sold out Indian Parrot Chrysoberyl Cat's Eye 5.0mm/1.099ct Loose Stone

Indian Parrot Chrysoberyl Cat's Eye 5.0mm/1.099ct Loose Stone

Sold out German Apatite 3.1mm/0.100ct Loose Stone

German Apatite 3.1mm/0.100ct Loose Stone

Sold out Mexican Fire Agate 8.033ct Loose Stone

Mexican Fire Agate 8.033ct Loose Stone
Sold out American benitoite 0.147ct loose

American benitoite 0.147ct loose

Sold out [12/5 22:00] Russian Phenakite 6.6mm/1.058ct Loose Stone

[12/5 22:00] Russian Phenakite 6.6mm/1.058ct Loose Stone
Sold out [Dandelion Cut] Madagascar Sphene 0.950ct Loose Stone

[Dandelion Cut] Madagascar Sphene 0.950ct Loose Stone

Sold out [Dandelion Cut] Madagascar Sphene 6.0mm/0.775ct Loose Stone

[Dandelion Cut] Madagascar Sphene 6.0mm/0.775ct Loose Stone

Sold out [Sakura In-Cut] Oregon Sunstone from the United States, 6.0mm/0.685ct Loose

[Sakura In-Cut] Oregon Sunstone from the United States, 6.0mm/0.685ct Loose
Sold out [Sakura Shape] Oregon Sunstone from the United States, 1.201ct Loose

[Sakura Shape] Oregon Sunstone from the United States, 1.201ct Loose

Sold out Australian white opal 1.928ct loose

Australian white opal 1.928ct loose
Sold out 【さくらインカット】マダガスカル産アパタイト 7.9mm/1.537ct《コラボ》ルース ワッペン

[Sakura In-Cut] Madagascar Green Apatite 7.9mm/1.537ct "Collaboration" Loose Stone Patch
Sold out オーストラリア産エメラルド 0.320ctルース

Australian emerald 0.320ct loose stone
Sold out ブルーサファイア 1.095ctルース

1.095ct loose blue sapphire
Sold out ブラジル産バイカラートルマリン 4.782ctルース

Brazilian bicolor tourmaline 4.782ct loose
Sold out 【12544758掲載】ウッドオパール 24.319ctルース

Wood opal 24.319ct loose
Sold out ケニア産ツァボライト 0.411ctルース

Kenyan Tsavorite 0.411ct Loose Stone
Sold out ロシア産フェナカイト 0.899ctルース

Russian Phenakite 0.899ct Loose Stone

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） 0.162ctルース

Russian Demantoid Garnet (Horsetail) 3.3mm/0.162ct Loose Stone
Sold out パイロープ・スペサルティンガーネット（カラーチェンジガーネット） 1.171ctルース

Pyrope spessartine garnet (color change garnet) 1.171ct loose
Sold out ミャンマー産バイカラースターサファイア 0.640ctルース

Myanmar Bicolor Star Sapphire 0.640ct Loose
Sold out タンザニア産コーネルピン 0.241ctルース

Tanzanian Kornerupine 0.241ct Loose Stone
Sold out イジェリア産コバルトガーナイト 0.171ctルース 鑑別書

Nigerian Cobalt Garnite 0.171ct Loose Stone with Certificate of Authenticity

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.