Mexican Cantera Opal 1.436ct Loose Stone (Rose Cut)
Sale price¥12,800
Vietnam Pink Sapphire 1.690ct Loose GIA
Sale price¥98,000
Royal Blue Sapphire 2.220ct Loose Stone AIGS
Sale price¥458,000
Sri Lankan Blue Sapphire (Ice Blue) 0.271ct Loose (Princess Cut)
Sale price¥12,800
Colombian emerald 0.202ct loose stone
Sale price¥59,800
Mexican Cantera Opal 8.331ct Loose
Sale price¥39,800
Mexican Cantera Opal 11.885ct Loose
Sale price¥49,800
Mexican Fire Opal (Faceted Cut) 0.844ct Loose
Sale price¥15,800
Sri Lankan Yellow Sapphire 0.320ct Loose
Sale price¥15,800
Mexican Hyalite Opal 0.942ct Loose
Sale price¥9,800
Mexican Hyalite Opal 6.0mm/0.708ct Loose
Sale price¥25,800
![[On sale from 10/13 at 10pm] [Limited to 6 stones] Contains 2 stones in total: 1 gemstone (rough stone) that has been featured in a gemstone encyclopedia + 1 emerald rough stone.](http://store.karatz.jp/cdn/shop/files/collage_5fd345f1-1646-43a1-b347-1e83dd089a63.png?v=1751925957&width=2000)
Yellow Diamond (Cabochon Cut) 0.237ct Loose
Sale price¥35,800
Yellow Diamond (Cabochon Cut) 0.176ct Loose
Sale price¥29,800
Colombian trapiche emerald (reverse trapiche) 0.178ct rough stone
Sale price¥15,800
Mexican Fire Opal 1.348ct Loose
Sale price¥15,800
Bicolor sapphire 0.301ct loose
Sale price¥18,800
[On sale 7/3 at 22:00] Madagascar bicolor sapphire 0.232ct loose stone
Sale price¥15,800
[On sale 7/3 at 22:00] Madagascar bicolor sapphire 0.188ct loose stone
Sale price¥12,800
Dominican Republic Conch Pearl (with flame pattern) 1.260ct loose
Sale price¥25,800
Dominican Republic Conch Pearl 0.800ct Loose
Sale price¥19,800
Colombian emerald cat's eye 0.084ct loose
Sale price¥6,980
Diamond 0.245ct loose stone (E, VS-1, octagon brilliant cut)
Sale price¥39,800
Dominican Republic Conch Pearl (with flame pattern) 0.960ct loose
Sale price¥18,800
Mexican Fire Opal 0.448ct Loose
Sale price¥3,980
Kenyan gold sheen sapphire 0.257ct loose
Sale price¥19,800
Blue sapphire 0.466ct loose stone
Sale price¥12,800
Blue sapphire 0.282ct loose stone (teal color)
Sale price¥15,800
Madagascar Blue Sapphire 0.890ct Loose
Sale price¥39,800
American Benitoite 0.150ct loose stone (emerald cut)
Sale price¥69,800
Sri Lankan bicolor sapphire 1.020ct loose stone
Sale price¥59,800
[Star in cut] Mexican fire opal 7mm/0.678ct loose patch
Sale price¥49,800
[Star-in cut] Mexican opal 8mm/1.139ct loose stone
Sale price¥39,800
Diamond (cabochon cut) 0.401ct loose (star depending on angle)
Sale price¥49,800
Bicolor Sapphire 5.640ct Loose Stone with Certificate
Sale price¥98,000
Colombian emerald 0.203ct loose stone with certificate
Sale price¥98,000
Ethiopian Opal 7.2mm/0.910ct Loose Stone
Sale price¥6,980
Sri Lankan Cat's Eye Sapphire 2.177ct Loose
Sale price¥98,000
Madagascar Purple Sapphire 4.5mm/0.393ct Loose Stone
Sale price¥18,800
Madagascar Purple Sapphire 4.5mm/0.435ct Loose Stone
Sale price¥18,800
Dendritic Opal 3.041ct Loose
Sale price¥18,800
Australian black opal 0.404ct 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.