Spanish Andalusite 0.674ct loose stone
Sale price¥8,800
Russian Demantoid Garnet (Horsetail Recognized) 5.1mm/0.664ct Loose Stone
Sale price¥188,000
Brazilian Bicolor Tourmaline Cat's Eye 9.5mm/4.730ct Loose Stone
Sale price¥18,800
Madagascar Bicolor Sapphire 0.298ct Loose (Padparadscha Color)
Sale price¥35,800
American Red Beryl 0.252ct Loose
Sale price¥39,800
Indian Star Garnet 13.260ct Loose Stone (6 Rows)
Sale price¥5,980
American Red Beryl 0.200ct Loose (Heart Shape) Nikkeikan
Sale price¥35,800
Brazilian bicolor tourmaline 7.445ct loose stone
Sale price¥69,800
Spanish Andalusite 0.478ct loose stone
Sale price¥6,980
Nigerian Morganite 0.948ct loose stone
Sale price¥8,800
Brazilian Medusa Quartz (Paraiba Quartz) 0.590ct Loose
Sale price¥9,800
Spanish Andalusite 0.355ct loose stone
Sale price¥6,980
Brazilian Madeira Citrine 0.489ct Loose Stone
Sale price¥7,980
Brazilian Madeira Citrine 0.672ct Loose Stone
Sale price¥6,980
Brazilian Paraiba Tourmaline in Quartz 6.0mm/0.676ct Loose Stone
Sale price¥15,800
Brazilian Paraiba Tourmaline in Quartz 6.0mm/0.718ct Loose Stone
Sale price¥18,800
![[On sale from 10pm on 5/18] Malawi bicolor zircon 0.621ct loose stone](http://store.karatz.jp/cdn/shop/files/P3139797_8924ce33-8ebc-4614-aa4b-827edff1d5f4.jpg?v=1749163093&width=3437)
[On sale from 10pm on 5/18] Malawi bicolor zircon 0.621ct loose stone
Sale price¥29,800
Mexican Cantera Opal 6.112ct Loose
Sale price¥59,800
Russian Demantoid Garnet (Horsetail certified) 2.6mm/0.091ct loose stone
Sale price¥15,800
Mexican Fire Opal (Faceted Cut) 0.525ct Loose
Sale price¥12,800
Mexican fire opal (faceted cut) 0.387ct loose stone
Sale price¥14,800
Madagascar Blue Sapphire (Ice Blue) 0.584ct Loose
Sale price¥19,800
Australian Prehnite 6.0mm/1.004ct loose stone (rose cut)
Sale price¥8,800
Australian Prehnite 6.0mm/0.993ct loose stone (rose cut)
Sale price¥8,800
Mozambique Almandine Garnet 0.477ct Loose Stone
Sale price¥8,800
Sri Lankan Blue Sapphire 4.2mm/0.333ct Loose Stone
Sale price¥12,800
South African diamond rough (sawable) 0.103ct rough (with trigon)
Sale price¥24,800
Mozambique Almandine Garnet 0.965ct Loose Stone
Sale price¥12,800
Australian white opal 2.318ct loose
Sale price¥12,800
Sri Lankan Rhodolite Garnet 1.858ct Loose Stone
Sale price¥15,800
![[Koshu Precious Stone Cutting] Brazilian Sky Blue Topaz 10.60ct Loose Stone [Collaboration] Patch](http://store.karatz.jp/cdn/shop/files/P5120836.jpg?v=1747480996&width=4000)
South African diamond rough stone 0.330ct
Sale price¥5,980
Brazilian Bicolor Tourmaline 4.554ct Ruth Japanese-German Edition
Sale price¥298,000
Diamond 3.3mm/0.131ct Loose (G, VS-1, EXCELLENT Heart & Cupid)
Sale price¥25,800
Tanzanian Sunstone (Illusion Sunstone) 0.823ct Loose Stone
Sale price¥12,800
[Takeshi Yamamoto] Brazilian Ametrine 29.930ct loose stone
Sale price¥79,800
Indian Star Garnet 14.200ct Loose Stone (6 Rows)
Sale price¥5,980
Sri Lankan bicolor sapphire 0.304ct loose stone
Sale price¥14,800
Mexican Fire Opal 1.610ct Loose (Contralus Opal)
Sale price¥19,800
Mexican Fire Opal 1.330ct Loose (Contralus Opal)
Sale price¥19,800
Colombian emerald cat's eye 0.421ct loose stone
Sale price¥12,800
Brazilian Paraiba tourmaline 0.215ct loose (CuO:1.1%, MnO:3.3%)
Sale price¥55,800
Brazilian Tinkerbell Quartz (Pink Fire Quartz) 4.670ct Loose Stone
Sale price¥18,800
Burmese Ruby 3.725ct Loose GIA & Chuho
Sale price¥198,000
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.