Kochi Prefecture deep red coral 7.815ct loose gemstone
Sale price¥42,800
Kochi Prefecture oxblood coral 1.593ct loose
Sale price¥9,800
Kochi Prefecture Blood Coral 1.585ct Loose Gemstone
Sale price¥9,800
Kochi Prefecture Aka Sango (Red Coral) 10.209ct Loose Stone
Sale price¥29,800
【Sales start July 22nd, 10 PM JST】Malawi Moonstone 2.114ct Loose Stone
Sale price¥12,800
[Sale on 7/22 at 10 PM] Malawi Moonstone 1.748ct Loose Gemstone
Sale price¥9,800
[On sale July 22nd at 10 PM] Malawi Moonstone 2.001ct Loose Gemstone
Sale price¥12,800
[On sale 7/24 at 10 PM] Malawi Moonstone 1.621ct Loose Stone
Sale price¥9,800
[On sale July 24 at 10 PM] Malawi Moonstone 1.684ct Loose Gemstone
Sale price¥9,800
[On sale 7/24 10 PM] Malawi Moonstone 1.939ct Loose Gemstone
Sale price¥12,800
[Posted 12563424] Malawi Moonstone 2.283ct Loose Stone
Sale price¥12,800
[12563423] Malawi Moonstone 1.747ct Loose
Sale price¥9,800
[Listed on 22602645] [Colorful] Pt900 Ruby 0.6ct Ring
Sale price¥98,000
[Posted on 22602644] [Calafri] K18 Synthetic Sapphire Ring
Sale price¥45,800
[Listed as 22602642][Colorful] Pt950 Moonstone Cat's Eye 3ct Ring
Sale price¥79,800
[Item ID: 22602630] [Karafuri] Pt900 Blue Sapphire 0.43ct Ring
Sale price¥98,000
Diamond loose/certificate transfer fee
Sale price¥8,800
Brazilian Euclase 0.289ct loose stone
Sale price¥12,800
Brazilian Euclase 0.263ct Loose Stone (Colorless Euclase)
Sale price¥9,800
Brazilian Euclase 0.695ct Loose Stone
Sale price¥18,800
Synthetic Alexandrite 0.287ct loose stone
Sale price¥8,800
Brazilian Dendritic Agate 1.679ct Loose Stone
Sale price¥5,980
Brazilian Dendritic Agate 2.788ct Loose Stone
Sale price¥6,980
Brazilian Dendritic Agate 3.575ct Loose Stone
Sale price¥8,800
Tanzanian Lavender Tanzanite 0.558ct Loose Stone
Sale price¥12,800
Tanzanian bicolor tanzanite 0.573ct loose stone
Sale price¥12,800
Tanzanian Lavender Tanzanite 0.577ct Loose Stone
Sale price¥12,800
Brazilian Pink Tourmaline 0.418ct Loose Stone (Rouge Cut)
Sale price¥8,800
Montana Agate 9.528ct Loose
Sale price¥8,800
Oregon Sunstone from the United States 0.736ct loose stone
Sale price¥8,800
Russian rough diamond (sawable) 0.088ct loose
Sale price¥19,800
Sri Lankan Chrysoberyl Cat's Eye 1.514ct Loose Stone
Sale price¥5,980
Sri Lankan Chrysoberyl Cat's Eye 1.074ct Loose Stone
Sale price¥4,980
Brazilian Paraiba Tourmaline 0.360ct Loose GIA
Sale price¥298,000
Sri Lankan Yellow Sapphire 0.349ct Loose
Sale price¥12,800
Synthetic Moissanite 5.8mm/0.678ct Loose Stone
Sale price¥8,800
Brazilian Green Tourmaline 0.825ct Loose Stone
Sale price¥9,800
Brazilian Green Tourmaline 0.376ct Loose Stone
Sale price¥7,980
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.