Tanzanite from Tanzania 0.436ct loose stone
Sale price¥8,800
Cassiterite 4.0mm/0.571ct Loose Stone with Certificate of Authenticity
Sale price¥14,800
0.257ct Unheated Silky Pink Sapphire from Vietnam
Sale price¥12,800
Sri Lankan Bicolor Sapphire 0.607ct Loose Stone
Sale price¥15,800
Tanzanite from Tanzania 0.730ct loose stone
Sale price¥29,800
Brazilian Santa Maria Aquamarine 0.524ct Loose Stone
Sale price¥55,800
Oregon Sunstone from the United States, 5.0mm/0.520ct loose stone
Sale price¥15,800
American Peridot 0.770ct Loose Stone
Sale price¥12,800
Australian black opal 0.758ct loose stone
Sale price¥18,800
Tanzanite from Tanzania 0.680ct loose stone
Sale price¥15,800
Sri Lankan bicolor sapphire 0.586ct loose stone
Sale price¥39,800
Mangano tantalite from Afghanistan 0.233ct loose
Sale price¥39,800
Sphene from Madagascar 0.498ct loose
Sale price¥6,980
American red beryl 0.208ct 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
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
Synthetic rutile 5mm/0.553ct loose stone
Sale price¥12,800
Synthetic rutile 5.8mm/0.904ct loose stone
Sale price¥12,800
Rough diamond (sawable) 0.466ct rough diamond (with trigon)
Sale price¥98,000
Diamond rough (makeable) 0.204ct rough
Sale price¥39,800
0.604ct rough diamond
Sale price¥12,800
Mozambique Ruby 0.544ct Loose Stone with Certificate of Authenticity
Sale price¥39,800
Brazilian Blue Tourmaline 0.827ct Loose Stone
Sale price¥19,800
Brazilian Dumortierite in Quartz 0.382ct Loose Stone
Sale price¥9,800
Colombian emerald 0.091ct loose stone
Sale price¥15,800
Zimbabwean Bicolor Euclase 0.201ct Loose Stone
Sale price¥48,800
Mexican Water Opal (Faceted) 0.215ct Loose (Contrarus Opal)
Sale price¥18,800
Pakistani Lazurite (Azurite) 0.171ct Loose Stone
Sale price¥49,800
Colombian emerald 3.3mm/0.131ct loose stone
Sale price¥25,800
Parasitic Peridot 0.241ct Loose Stone, Japan-Germany Scale
Sale price¥98,000
Brazilian Paraiba Tourmaline 0.115ct Loose (CuO:2.0%, MnO:0.6%)
Sale price¥59,800
Bekiri Blue Garnet (Color Change Garnet) from Madagascar, 0.183ct Loose
Sale price¥18,800
Madagascar Bekiri Blue Garnet (Color Change Garnet) 0.189ct Loose Stone
Sale price¥18,800
Madagascar Bekily Blue Garnet (Color Change Garnet) 0.221ct Loose Stone
Sale price¥22,800
German Hauyne 2.7mm/0.076ct Loose Stone
Sale price¥29,800
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
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.