Cassiterite 4.0mm/0.571ct Loose Stone with Certificate of Authenticity
Sale price¥14,800
Demantoid garnet 15.468ct rough stone from Madagascar
Sale price¥9,800
Mangano tantalite from Afghanistan 0.233ct loose
Sale price¥39,800
Sphene from Madagascar 0.498ct loose
Sale price¥6,980
American red beryl 0.143ct loose
Sale price¥15,800
American red beryl 0.208ct loose
Sale price¥22,800
American red beryl 0.141ct loose
Sale price¥14,800
Cambodian Blue Zircon 0.205ct Loose
Sale price¥3,980
Cambodian Blue Zircon 0.204ct Loose
Sale price¥3,980
Cambodian Blue Zircon 0.221ct Loose
Sale price¥3,980
Synthetic moissanite (gray blue) 1.701ct loose
Sale price¥12,800
Paraiba tourmaline from Brazil 0.243ct loose
Sale price¥14,800
Cambodian Blue Zircon 0.609ct Loose
Sale price¥5,980
Paraiba tourmaline from Mozambique 0.270ct loose
Sale price¥18,800
Mexican Water Opal 1.790ct Loose (Contralus Opal)
Sale price¥29,800
Synthetic rutile 5mm/0.553ct loose stone
Sale price¥12,800
Synthetic rutile 5.8mm/0.904ct loose stone
Sale price¥12,800
Sri Lankan Twin Star Sapphire 5.225ct Loose
Sale price¥98,000
American benitoite 0.097ct loose
Sale price¥24,800
American benitoite 0.101ct loose
Sale price¥25,800
American benitoite 0.127ct loose
Sale price¥28,800
American benitoite 0.102ct loose
Sale price¥22,800
American benitoite 0.098ct loose
Sale price¥25,800
American benitoite 0.187ct loose
Sale price¥39,800
Mint green sapphire 0.348ct loose
Sale price¥9,800
Mint color tourmaline 0.198ct loose
Sale price¥4,980
Mint color tourmaline 0.229ct loose
Sale price¥4,980
Pink tourmaline 0.205ct loose
Sale price¥4,980
Bicolor sapphire from Madagascar 0.252ct loose
Sale price¥9,800
Bicolor sapphire from Madagascar 0.265ct loose
Sale price¥16,800
Bicolor sapphire from Madagascar 0.198ct loose
Sale price¥7,980
Mexican water opal 0.212ct loose (contrarus opal)
Sale price¥18,800
Goshenite 1.620ct loose
Sale price¥15,800
Dendritic Agate 2.964ct loose
Sale price¥8,800
Diaspore 1.209ct loose from Türkiye
Sale price¥15,800
Diaspore from Türkiye 0.636ct loose
Sale price¥9,800
Brazilian kyanite in quartz 13.740ct loose
Sale price¥29,800
Brazilian kyanite in quartz 4.770ct loose
Sale price¥12,800
Chinese aragonite 36.409ct loose with patch
Sale price¥5,980
Tourmaline cat's eye 0.910ct loose
Sale price¥4,980
Sphene from Madagascar 1.476ct loose
Sale price¥18,800
Bicolor Zoisite 1.210ct loose
Sale price¥15,800
Unheated silky pink sapphire from Vietnam 0.247ct loose
Sale price¥8,800
Brazilian Medusa Quartz (Paraiba Quartz) 10.298ct loose
Sale price¥7,980
Brazilian Medusa Quartz (Paraiba Quartz) 5.809ct loose
Sale price¥6,980
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.