Round Cut
Oregon Sunstone from the United States 0.372ct loose stone
Sale price¥12,800
Oregon Sunstone from the United States 5.0mm/0.460ct loose stone
Sale price¥19,800
Brazilian Paraiba Tourmaline in Quartz 4.5mm/0.284ct Loose Stone
Sale price¥22,800
YAG (Yttrium Aluminum Garnet) 7.1mm/1.709ct loose stone
Sale price¥12,800
American Benitoite 1.8mm/0.159ct loose stone (gradation)
Sale price¥39,800
Mexican Fire Opal 6.7mm/0.953ct Loose
Sale price¥25,800
Mexican Fire Opal 4.9mm/0.333ct Loose
Sale price¥8,800
[Koshu Precious Stone Cutting Pluethree] Yellow Beryl 0.880ct Loose
Sale price¥29,800
Oregon Sunstone from the United States 6.0mm/0.844ct loose stone
Sale price¥25,800
Tanzania Pink Zoisite 5.8mm/0.848ct Loose Stone
Sale price¥198,000
Czech Aragonite 8.0mm/2.082ct Loose Stone
Sale price¥69,800
Spanish Sphalerite 8mm/2.796ct loose stone
Sale price¥69,800
Sri Lankan Silky Sapphire 6.4mm/1.036ct Loose Stone
Sale price¥12,800
Mexican Danburite 7.0mm/1.224ct loose stone
Sale price¥9,800
Violet Sapphire 4.3mm/0.328ct Loose
Sale price¥15,800
Pink sapphire 4.5mm/0.390ct loose stone
Sale price¥15,800
Purple sapphire 4mm/0.273ct loose stone
Sale price¥12,800
Yellow Sapphire 4.0mm/0.266ct Loose
Sale price¥12,800
Bicolor Fluorite 6.1mm/0.869ct Loose Stone
Sale price¥6,980
Detroit City Rhodochrosite 4mm/0.439ct Loose Stone
Sale price¥8,800
American Herkimer Diamond 5.6mm/0.516ct Loose
Sale price¥9,800
Tanzania Bicolor Zoisite 4mm/0.305ct Loose Stone
Sale price¥6,980
Mozambique Aquamarine 4.9mm/0.463ct Loose Stone
Sale price¥9,800
YAG (Yttrium Aluminum Garnet) 7mm/1.686ct Loose Stone
Sale price¥12,800
American Benitoite 4.8mm/0.396ct Loose Stone by Nikkei
Sale price¥298,000
Myanmar Ubaite Tourmaline 4.0mm/0.251ct Loose Stone
Sale price¥22,800
Spanish Sphalerite 7.0mm/1.753ct loose stone
Sale price¥35,800
Tanzania Bicolor Zoisite 4.6mm/0.489ct Loose Stone
Sale price¥12,800
Tanzania Bicolor Zoisite 4.8mm/0.540ct Loose Stone
Sale price¥12,800
Tanzanite from Tanzania 0.497ct loose stone
Sale price¥12,800
Tanzania Bicolor Zoisite 4.7mm/0.486ct Loose Stone
Sale price¥12,800
Synthetic Moissanite 0.634ct loose stone
Sale price¥9,800
American Herkimer Diamond (Rock Crystal) 5.5mm/0.528ct Loose
Sale price¥8,800
Goshenite 5.7mm/0.572ct loose stone
Sale price¥5,980
Tanzanian Golden Sheen Sapphire 3.8mm/0.301ct Loose Stone
Sale price¥13,800
Benitoite 1.8mm/0.025ct loose stone (colorless benitoite)
Sale price¥12,800
Benitoite 1.8mm/0.025ct loose stone (colorless benitoite)
Sale price¥15,800
Mica in Quartz 0.544ct Loose Stone
Sale price¥6,980
American Herkimer Diamond (Rock Crystal) 5.5mm/0.534ct Loose
Sale price¥8,800
American Herkimer Diamond (Rock Crystal) 5.3mm/0.594ct Loose
Sale price¥8,800
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.
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.