Radiant Cut

Oregon Sunstone 0.713ct loose Sale price¥6,980

Cambodian Blue Zircon 0.744ct Loose Stone Sale price¥8,800

Cambodian Blue Zircon 0.348ct Loose Stone Sale price¥6,980

Oregon Sunstone 0.462ct loose Sale price¥6,980

Scapolite 0.587ct loose stone from Japan and Germany Sale price¥8,800

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[On Sale at 10pm on 10/27] Indian Iolite Sunstone 0.520ct Loose

coming soon

[On Sale 11/1 at 10pm] Pakistani Axinite (Green Tint) 1.476ct Loose Stone Sale price¥39,800

coming soon

[11/1 22:00 Sale] Mozambique Rhodolite Garnet 0.835ct Loose Stone Sale price¥12,800

coming soon

[11/1 22:00 Sale] Tanzanian Spessartine Garnet 0.383ct Loose Stone Sale price¥12,800

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[On Sale at 10 PM on September 7th] Brazilian Elestial Amethyst 2.101ct Loose Stone

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[On Sale at 10 PM on September 4th] Brazilian Elestial Amethyst 0.745ct Loose Stone

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[On sale from 10pm on August 21st] Zimbabwean sphene 0.356ct loose stone

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[On Sale at 10 PM on August 21st] Mexican Opal (Faceted) 0.187ct Loose

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[On sale from 10pm on August 11th] Brazilian Green Beryl 0.217ct Loose Stone

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[8/11 22:00 Sale] Brazilian Aquamarine 1.573ct Loose Stone

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[8/15 22:00 Sale] Brazilian Aquamarine 0.300ct Loose Stone

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[On Sale at 10 PM on August 17th] Tanzanian Color Change Garnet 0.563ct Loose Stone

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Cambodian Zircon 1.818ct Loose

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Brazilian Swiss Blue Topaz 1.090ct Loose

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Oregon Sunstone from the United States 0.657ct loose stone

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Bicolor sapphire 0.973ct loose stone

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Kunzite (lilac pink) from Afghanistan 2.993ct loose stone

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Mozambique Rhodolite Garnet 1.151ct Loose Stone

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Mozambique Garnet 1.419ct Loose Stone

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Oregon Sunstone from the United States 0.484ct loose stone

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Blue sapphire 0.533ct loose

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Blue sapphire 0.874ct loose stone

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Tanzanian mint diopside 0.237ct loose stone

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Brazilian Madeira Citrine 0.643ct Loose Stone

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Bolivian Ametrine 3.751ct loose stone

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Brazilian Green Tourmaline 1.466ct Loose Stone

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Moldavite from former Czechoslovakia 0.091ct loose stone

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Cassiterite 0.689ct loose stone with certificate

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Brazilian Lepidocrocite in Quartz 2.021ct Loose Stone

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Color change sapphire 0.459ct loose stone

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Madagascar sphene 1.380ct loose stone

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Cambodian white zircon (colorless zircon) 0.952ct 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.