Brazilian green tourmaline 4.345ct loose stone
Sale price¥69,800
Tanzanite from Tanzania 2.777ct loose stone
Sale price¥98,000
0.604ct rough diamond
Sale price¥12,800
Diamond rough (makeable) 0.204ct rough
Sale price¥39,800
Rough diamond (sawable) 0.466ct rough diamond (with trigon)
Sale price¥98,000
Myanmar color change zircon 0.697ct loose stone
Sale price¥39,800
Kunzite from Afghanistan 23.634ct loose stone
Sale price¥98,000
Synthetic rutile 5.8mm/0.904ct loose stone
Sale price¥12,800
Synthetic rutile 5mm/0.553ct loose stone
Sale price¥12,800
Mexican Water Opal 1.790ct Loose (Contralus Opal)
Sale price¥29,800
Paraiba tourmaline from Mozambique 0.270ct loose
Sale price¥18,800
Cambodian Blue Zircon 0.609ct Loose
Sale price¥5,980
Paraiba tourmaline from Brazil 0.243ct loose
Sale price¥14,800
Synthetic moissanite (gray blue) 1.701ct loose
Sale price¥12,800
Cambodian Blue Zircon 0.221ct Loose
Sale price¥3,980
Cambodian Blue Zircon 0.204ct Loose
Sale price¥3,980
Cambodian Blue Zircon 0.205ct Loose
Sale price¥3,980
American red beryl 0.141ct loose
Sale price¥14,800
American red beryl 0.208ct loose
Sale price¥22,800
American red beryl 0.143ct loose
Sale price¥15,800
Sphene from Madagascar 0.498ct loose
Sale price¥6,980
Mangano tantalite from Afghanistan 0.233ct loose
Sale price¥39,800
Demantoid garnet 15.468ct rough stone from Madagascar
Sale price¥9,800
Sri Lankan bicolor sapphire 0.586ct loose stone
Sale price¥39,800
Tanzanite from Tanzania 0.680ct loose stone
Sale price¥15,800
3.583ct Australian Black Opal Loose Stone (Double Sided)
Sale price¥29,800
Australian black opal 0.758ct loose stone
Sale price¥18,800
American Peridot 0.770ct Loose Stone
Sale price¥12,800
Oregon Sunstone from the United States, 5.0mm/0.520ct loose stone
Sale price¥15,800
Kenyan Tsavorite 1.026ct Loose Stone
Sale price¥98,000
Brazilian Santa Maria Aquamarine 0.524ct Loose Stone
Sale price¥55,800
Tanzanite from Tanzania 0.730ct loose stone
Sale price¥29,800
Brazilian green tourmaline 1.233 ct loose stone
Sale price¥69,800
Sri Lankan Bicolor Sapphire 0.607ct Loose Stone
Sale price¥15,800
0.257ct Unheated Silky Pink Sapphire from Vietnam
Sale price¥12,800
Zimbabwean Sphene 2.520ct Loose Gemstone
Sale price¥59,800
Zimbabwean sphene, 2.067ct loose
Sale price¥59,800
9.214ct Loose Kunzite from Afghanistan
Sale price¥45,800
Tanzanian Bicolor Grossular Garnet 2.997ct Loose Stone
Sale price¥69,800
Cassiterite 4.0mm/0.571ct Loose Stone with Certificate of Authenticity
Sale price¥14,800
Tanzanite from Tanzania 0.436ct loose stone
Sale price¥8,800
Tanzanite from Tanzania 0.467ct loose stone
Sale price¥9,800
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.