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 "

Almandine Garnet 0.660ct Loose Sale price¥6,980

American red beryl 0.207ct loose Sale price¥49,800

Pink spinel 5.2mm/0.573ct loose stone Sale price¥6,580

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[On sale 5/18 at 10 PM] Cinnabar from Hunan, China, 0.882 ct Loose Stone, with certification

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Untreated Vietnamese Star Ruby 1.696ct Loose Stone with Certification

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[On sale May 1st at 10 PM] China Hunan Province Cinnabar Loose Stone 0.982ct with Certification

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[On sale May 1st at 10 PM JST] China Hunan Cinnabar (Synsha/Cinnabar) 0.635ct Loose Gemstone with Certificate

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Ruby 0.289ct loose stone by Takakikyo

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Kochi Prefecture oxblood coral 6.351ct loose

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Polish Zincite 1.059 ct Loose Stone, Nichidoku Appraisal

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0.562ct Almandine Garnet Loose Stone from Mozambique

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Mozambique Almandine Garnet 0.961ct Loose

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Oregon Sunstone from the United States, 7.2mm/1.334ct loose stone

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Oregon Sunstone from USA 7.1mm/1.366ct Loose

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American Red Beryl 0.120ct Loose

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American Neptunite 0.207ct Loose Stone with Certificate of Authenticity

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0.256ct Neptunite from the USA, with a certificate

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American Neptunite 0.290ct Loose Stone with Certificate of Authenticity

coming soon

Canadian Eudialite 2.5mm/0.051ct Loose Stone with Certificate of Authenticity Sale price¥18,800

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Canadian Eudialyte 2.5mm/0.047ct Loose Stone with Certification

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3.359ct Canadian Eudialyte Loose Stone with Identification Report

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Canadian Eudialite 5.714ct Loose Stone with Certificate of Authenticity

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0.085ct loose, non-oil red beryl from the United States, GIA

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Oregon Sunstone from the United States, 7.0mm/1.169ct loose stone

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1.362ct loose Oregon sunstone from the United States

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U.S. Anthill Garnet 4.0mm/0.370ct Loose

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Myanmar Red Spinel 0.196ct Loose Stone

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Ruby 3.3mm/0.171ct Loose

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U.S. Red Beryl 2.2mm/0.047ct Loose

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USA Oregon Sunstone 5.0mm/0.443ct Loose

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Pigeon blood ruby 0.310ct loose

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Pigeon's Blood Ruby 4.0mm/0.230ct Loose AIGS

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Ruby 0.258ct loose

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Anthill garnet from the USA (with forsterite) 0.578ct loose

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Unmounted American Anthill Garnet, 4.0mm/0.269ct

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American Anthill Garnet 5.0mm/0.641ct Loose

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USA Ant Hill Garnet 4.0mm/0.277ct Loose Stone

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1.676ct loose Oregon sunstone from the United States

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USA Oregon Sunstone 1.869ct Loose

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Tanzanian Almandine Garnet 0.586ct Loose

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Mozambique Ruby 0.481ct Loose Stone with Certificate of Authenticity

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Unheated Burmese Ruby 0.227ct Loose Stone, Nikko Kan

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Unheated star ruby from Myanmar, 0.617ct loose

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Unheated Pigeon Blood Ruby 0.710ct Loose Stone AIGS

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Chinese Cinnabar (Cinnabar) 1.062ct Loose Stone with Certificate of Authenticity

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[Sakura In-Cut] Tibetan Andesine 8.0mm/1.366ct Loose Stone

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.