Birthstone list
Brazilian Paraiba Tourmaline in Quartz 4.5mm/0.328ct Loose Stone
Sale price¥12,800
Tanzania UV type bicolor tsavorite 0.947ct loose stone
Sale price¥39,800
Sri Lankan Rhodolite Garnet 1.858ct Loose Stone
Sale price¥15,800
Australian white opal 2.318ct loose
Sale price¥12,800
Mozambique Almandine Garnet 0.965ct Loose Stone
Sale price¥12,800
Brazilian bicolor tourmaline 7.445ct loose stone
Sale price¥69,800
Indian Star Garnet 13.260ct Loose Stone (6 Rows)
Sale price¥5,980
Brazilian Bicolor Tourmaline Cat's Eye 9.5mm/4.730ct Loose Stone
Sale price¥18,800
Russian Demantoid Garnet (Horsetail Recognized) 5.1mm/0.664ct Loose Stone
Sale price¥188,000
Synthetic Black Opal 5.013ct Loose
Sale price¥59,800
Black star sapphire 0.930ct loose
Sale price¥6,980
Sri Lankan Star Sapphire 7.976ct Loose
Sale price¥98,000
Russian Demantoid Garnet 3.0mm/0.194ct Loose Stone
Sale price¥18,800
Brazilian bicolor tourmaline cat's eye 2.640ct loose stone
Sale price¥12,800
Colombian emerald cat's eye 0.108ct loose
Sale price¥8,800
South African diamond rough stone 0.210ct
Sale price¥8,800
Colombian pyrite emerald 2.380ct rough stone
Sale price¥29,800
Australian Boulder Opal 6.160ct Loose
Sale price¥18,800
South African Diamond Rough (Sawable) 0.107ct Rough Trigon
Sale price¥42,800
Indian Star Garnet 11.440ct Loose Stone (6 Rows)
Sale price¥5,980
Mexican Cantera Opal 18.00ct Loose
Sale price¥29,800
Tanzanian Almandine Garnet 1.190ct Loose Stone
Sale price¥12,800
Australian Opal 0.371ct Loose
Sale price¥8,800
Australian Opal 0.423ct Loose
Sale price¥6,980
Australian Opal 0.706ct Loose
Sale price¥8,800
Australian Opal 0.633ct Loose
Sale price¥9,800
Sapphire 0.328ct loose stone
Sale price¥12,800
Sri Lankan Yellow Sapphire 0.209ct Loose
Sale price¥15,800
Sri Lankan Yellow Sapphire 0.318ct Loose
Sale price¥15,800
Sri Lankan Yellow Sapphire 0.349ct Loose
Sale price¥15,800
Brazilian Paraiba tourmaline 0.184ct raw stone (CuO:1.5%, MnO:0.6%)
Sale price¥12,800
Brazilian Paraiba tourmaline 0.180ct raw stone (CuO:1.8%, MnO:0.1%)
Sale price¥12,800
Colombian Trapiche Emerald 2.730ct Loose
Sale price¥98,000
Colombian emerald 8.90ct rough stone
Sale price¥45,800
Brazilian bicolor tourmaline 12.842ct loose
Sale price¥298,000
Russian demantoid garnet (horsetail recognized) 5.5mm/0.710ct loose
Sale price¥148,000
Colombian emerald cat's eye 0.083ct loose
Sale price¥6,980
Colombian emerald cat's eye 0.078ct loose
Sale price¥6,980
Mexican Hyalite Opal 4.9mm/0.348ct Loose
Sale price¥12,800
Mexican Hyalite Opal 6.9mm/1.134ct Loose
Sale price¥25,800
Mexican Hyalite Opal 6.1mm/0.652ct Loose Stone
Sale price¥25,800
Mexican Hyalite Opal 5.2mm/0.439ct Loose Stone
Sale price¥12,800
Mexican Hyalite Opal 4.8mm/0.304ct 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.