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Red/red system

An impressive red gemstone that hides gorgeousness and strength. Typical examples include ruby, red diamond, red spinel, almandine garnet, rubellite, red beryl, and blood red coral, but there are many others. Many have a pinkish or orange tinge, and even if you say red, the impression varies depending on the gemstone.

Karatz GemMagazine
" 10 Red Jewels "

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coming soon レッドベリル 0.132ctルース

American Red Beryl 0.132ct Loose Sale price¥33,800
coming soon American red beryl 0.143ct loose

American red beryl 0.143ct loose Sale price¥35,800
血赤珊瑚 6.224ctルース

[Sales start on 6/6 at 10 PM JST] Kochi Prefecture Harvested Red Coral 6.224ct Loose Gemstone Sale price¥29,800
モンゴル産アンデシン 0.464ctルース

[On sale May 30th at 10 PM] Mongolian Andesine 0.464ct Loose Stone Sale price¥9,800
モザンビーク産ルビー 0.464ctルース 鑑別書

[On Sale June 2nd, 10 PM JST] Mozambique Ruby 0.464ct Loose Gemstone with Identification Report Sale price¥29,800
coming soon 【12563224掲載】高知県産血赤珊瑚 2.423ctルース

[Sales start 10:00 PM on June 8th] Kochi Prefecture Production Blood Red Coral Loose Stone 2.423ct Sale price¥22,800
coming soon 【12563220掲載】高知県産血赤珊瑚 2.187ctルース

[Sales start 10 PM on June 8th] High-Grade Red Coral from Kochi Prefecture, 2.187ct Loose Stone Sale price¥19,800
coming soon 【12563219掲載】高知県産血赤珊瑚 1.975ctルース

【Sales Start: June 8th, 10 PM JST】Kochi Prefecture-produced Red Coral, 1.975ct Loose Stone Sale price¥18,800
coming soon 【12563218掲載】高知県産血赤珊瑚 1.879ctルース

[On sale June 8th at 10 PM JST] Kochi Prefecture-produced oxblood coral, 1.879 ct loose stone Sale price¥18,800
coming soon 【12563214掲載】高知県産血赤珊瑚 20.726ct原石

[On Sale 6/8, 10 PM JST] Kochi Prefecture Harvested Red Coral 20.726ct Branch (Raw Material) Sale price¥18,800
coming soon 【12563213掲載】高知県産血赤珊瑚 16.659ct原石

[On Sale June 8th at 10 PM] Kochi Prefecture Blood Coral 16.659ct Branch (Raw Material) Sale price¥18,800
高知県産血赤珊瑚 21.156ct原石

[On sale June 3rd, 10 PM JST] Kochi Prefecture-produced oxblood coral, 21.156 ct raw coral Sale price¥25,800
アルマンディンガーネット 0.814ctルース

Almandine Garnet 0.814ct Loose Stone Sale price¥7,980
アルマンディンガーネット 1.049ctルース

Almandine Garnet 1.049ct Loose Stone Sale price¥9,800
アメリカ産レッドベリル 0.160ctルース

American red beryl 0.160ct loose Sale price¥89,800
モザンビーク産非加熱ルビー 0.135ctルース

Unheated Mozambique Ruby 2.7mm/0.135ct Loose Sale price¥19,800
中国・湖南省シンシャ（辰砂・シナバー） 1.056ctルース

[Sale on 5/17 at 10 PM] Cinnabar from Xinhua, Hunan Province, China, 1.056 ct Loose Stone with Gemological Report Sale price¥18,800
中国・湖南省シンシャ（辰砂・シナバー） 0.867ctルース

[Sale begins May 18th, 10 PM JST] Chinese Cinnabar (Hunan Province) 0.867ct Loose Stone with Certification Sale price¥13,800
中国・湖南省シンシャ（辰砂・シナバー） 0.842ctルース

[On sale May 15, 10 PM JST] Chinese Cinnabar from Hunan Province, 0.842ct Loose Stone with Certificate Sale price¥15,800
中国・湖南省シンシャ（辰砂・シナバー） 0.629ctルース

[Sales start 10 PM on May 22] Cinnabar (辰砂) from Hunan, China, 0.629 ct loose, with certificate Sale price¥9,800
中国・湖南省シンシャ（辰砂・シナバー） 0.469ctルース

[On sale May 17th at 10 PM] Chinese Hunan Cinnabar 0.469ct Loose Stone with Certificate of Authenticity Sale price¥9,800
Mozambique Ruby 0.544ct Loose Stone with Certificate of Authenticity

Mozambique Ruby 0.544ct Loose Stone with Certificate of Authenticity Sale price¥39,800
オーストラリア産オパール（母岩付） 14.840ctルース 鑑別書

[On Sale May 9th at 10 PM JST] Australian Opal with Matrix, 14.840ct, Loose Stone, Gemstone Report Sale price¥69,800
カナダ産ユーディアライト 0.056ctルース

[Sales start May 6, 10 PM] Canadian Eudialyte 0.056ct Loose Stone with Certificate Sale price¥15,800
[On Sale May 2 at 10 PM] Ruby 0.286ct Loose Gemstone with Identification Report

[On Sale May 2 at 10 PM] Ruby 0.286ct Loose Gemstone with Identification Report Sale price¥22,800
【12562858掲載】ベトナム産ルビー 1.758ctルース

1.758 ct Ruby Loose Stone from Vietnam with Identification Report Sale price¥49,800
Ruby 0.528ct Loose Stone with Gem Identification Report

Ruby 0.528ct Loose Stone with Gem Identification Report Sale price¥28,800
[On Sale 5/2 at 10 PM JST] Mozambique Almandine Garnet 17.770ct Loose Stone

[On Sale 5/2 at 10 PM JST] Mozambique Almandine Garnet 17.770ct Loose Stone Sale price¥98,000
【12562713掲載】ビルマ産ルビー 3.720ctルース

Burmese ruby 3.72ct loose GIA/CGL Sale price¥298,000
レピドクロサイトインクォーツ 0.308ctルース

Lepidocrocite in quartz 0.308ct loose Sale price¥6,980
Lepidocrocite in quartz 1.087ct loose

Lepidocrocite in quartz 1.087ct loose Sale price¥5,980
【12562832掲載】アメリカ産オレゴンサンストーン 0.941ctルース

Oregon Sunstone from the United States 0.941ct loose stone Sale price¥12,800
中国・湖南省シンシャ（辰砂・シナバー） 0.935ctルース

[12562802 posted] Chinese Cinnabar (Shansha) 0.935 ct Loose Sale price¥15,800
【12560344掲載】モザンビーク産アルマンディンガーネット 3.073ctルース

3.073ct Mozambique Almandine Garnet Loose Stone Sale price¥22,800
Mozambican Rhodolite Garnet 1.890ct Loose Stone

Mozambican Rhodolite Garnet 1.890ct Loose Stone Sale price¥18,800
レピドクロサイトインクォーツ 0.768ctルース

Lepidocrocite in Quartz 0.768ct Loose Sale price¥7,980
レピドクロサイトインクォーツ 0.241ctルース

Lepidocrocite in Quartz 0.241ct Loose Stone Sale price¥6,980
レピドクロサイトインクォーツ 0.382ctルース

Lepidocrocite in Quartz 0.382ct Loose Sale price¥6,980
Mozambican Almandine Garnet 1.363ct Loose Stone

Mozambican Almandine Garnet 1.363ct Loose Stone Sale price¥12,800
【12562079掲載】アメリカ産オレゴンサンストーン 1.494ctルース

American Oregon Sunstone 7.0mm/1.494ct Loose Sale price¥35,800
【12562078掲載】アメリカ産オレゴンサンストーン 0.820ctルース

Oregon Sunstone from the United States, 6.1mm/0.820ct loose stone Sale price¥16,800
【12562077掲載】アメリカ産オレゴンサンストーン 1.356ctルース

USA-origin Oregon Sunstone, 7.0mm/1.356ct loose Sale price¥35,800
アメリカ産レッドベリル 0.184ctルース

American red beryl 0.184ct loose Sale price¥39,800
Unheated Pigeon Blood Ruby 0.380ct Loose Stone AIGS

Unheated Pigeon Blood Ruby 0.380ct Loose Stone AIGS Sale price¥79,800
Canada Eudialyte 2.5mm/0.059ct Loose Stone with Certificate of Authenticity

Canada Eudialyte 2.5mm/0.059ct Loose Stone with Certificate of Authenticity Sale price¥14,800
【12561987掲載】アメリカ産オレゴンサンストーン 1.260ctルース

Oregon Sunstone from the United States, 7.0mm/1.260ct loose stone Sale price¥12,800
【12561984掲載】アメリカ産オレゴンサンストーン 1.308ctルース

Oregon Sunstone from USA 7.1mm/1.308ct Loose Stone Sale price¥19,800
【12561953掲載】アメリカ産アントヒルガーネット 0.359ctルース

American Anthill Garnet 4.0mm/0.359ct Loose Sale price¥12,800

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.