Oval Cut
Tanzanian Kornerupine 0.249ct loose stone
Sale price¥15,800
Tanzanian Kornerupine 0.201ct loose stone
Sale price¥14,800
Tanzanian Kornerupine 0.200ct Loose Stone
Sale price¥9,800
German Awinite 0.070ct loose stone
Sale price¥29,800
Colombian emerald 0.512ct loose stone (silky type)
Sale price¥12,800
Brazilian Flower Quartz 4.666ct Loose Stone
Sale price¥9,800
Colombian oil-free emerald 0.310ct loose stone
Sale price¥298,000
Brazilian alexandrite 0.061ct loose
Sale price¥12,800
Brazilian alexandrite 0.058ct loose
Sale price¥11,000
Brazilian alexandrite 0.051ct loose
Sale price¥9,800
Brazilian alexandrite 0.060ct loose
Sale price¥11,000
Andalusite from Spain, 0.598 ct, loose
Sale price¥9,800
0.478ct Andalusite Loose Stone from Spain
Sale price¥8,800
Madagascar Apatite Cat's Eye 2.800ct Loose Stone Nichesyo
Sale price¥29,800
Synthetic Alexandrite 1.241ct Loose Stone
Sale price¥25,800
Brazil Color Change Amethyst 6.559ct Loose Stone
Sale price¥15,800
Brazilian Limonite in Topaz 7.141ct Loose
Sale price¥19,800
Mexican Fire Opal (Faceted) 1.046ct Loose Gemstone
Sale price¥29,800
1.415ct Loose Tanzanian Lavender Tanzanite
Sale price¥45,800
Brazilian Paraiba Tourmaline 0.170ct Loose Stone (CuO: 2.1%, MnO: 1.1%)
Sale price¥258,000
Ruby 0.528ct Loose Stone with Gem Identification Report
Sale price¥28,800
Brazilian canary yellow chrysoberyl 1.572ct loose
Sale price¥39,800
Mozambique Almandine Garnet 17.770ct Loose Stone
Sale price¥98,000
Brazilian Mica in Rose Quartz (雲母 in Rose Quartz) 7.882ct Loose
Sale price¥9,800
Brazilian Mica in Rose Quartz Loose Stone 3.245ct
Sale price¥5,980
Brazilian Mica in Rose Quartz 8.773ct Loose Stone
Sale price¥9,800
Brazilian Mica in Rose Quartz Cabochon, 8.477ct
Sale price¥11,000
Madagascar Bekily Blue Garnet (Color Change Garnet) 0.257ct Loose Stone
Sale price¥25,800
Madagascar Bekily Blue Garnet (Color Change Garnet) 0.167ct Loose
Sale price¥16,800
Madagascar Bekily Blue Garnet (Color Change Garnet) 0.188ct Loose Stone
Sale price¥18,800
Zimbabwean Euclase 0.058ct loose stone
Sale price¥29,800
Benitoite 0.231ct loose
Sale price¥220,000
Benitoite 0.286ct loose
Sale price¥258,000
Lavender quartz (scorolite) 1.130ct loose stone
Sale price¥5,980
Burmese ruby 3.72ct loose GIA/CGL
Sale price¥298,000
Tibetan bicolor andesine 2.657ct loose stone
Sale price¥19,800
Vietnam unheated silky pink sapphire 0.580ct loose stone
Sale price¥12,800
Cristobalite in Quartz 2.417ct Loose Stone
Sale price¥8,800
Ethiopian Opal 2.131ct Loose
Sale price¥9,800
Pakistani Lapis Lazuli (Lazurite) 0.150ct Loose Stone with Certificate
Sale price¥29,800
Brazilian Bicolor Tourmaline 0.780ct Loose
Sale price¥12,800
6.558ct Loose Australian Black Opal with Certificate of Authenticity
Sale price¥39,800
Ceylon Blue Sapphire (Ice Blue) 0.289ct Loose
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.