Tanzanite from Tanzania 0.298ct loose stone
Sale price¥9,800
Tanzanite from Tanzania 0.250ct loose stone
Sale price¥7,980
Tanzania Bicolor Zoisite 0.320ct Loose Stone
Sale price¥7,980
Tanzanite from Tanzania 0.321ct loose stone
Sale price¥6,980
Tanzanite from Tanzania 0.250ct loose stone
Sale price¥8,800
Ruby 0.284ct loose
Sale price¥15,800
Ruby 0.273ct loose stone
Sale price¥13,800
Ruby 0.173ct loose stone
Sale price¥12,800
Sri Lankan Yellow Sapphire 0.344ct Loose
Sale price¥8,800
Sri Lankan Yellow Sapphire 0.300ct Loose
Sale price¥8,800
Sri Lankan Blue Sapphire 0.226ct Loose
Sale price¥14,800
Ruby 0.248ct loose
Sale price¥12,800
Brazilian Pink Tourmaline 0.448ct Loose Stone
Sale price¥8,800
Mexican Yellow Opal 0.428ct Loose
Sale price¥8,800
Sri Lankan Yellow Sapphire 0.299ct Loose
Sale price¥12,800
Sri Lankan Yellow Sapphire 0.261ct Loose
Sale price¥12,800
Myanmar pink spinel 0.465ct loose stone
Sale price¥19,800
Myanmar Purple Spinel 0.434ct Loose Stone
Sale price¥12,800
Sri Lankan White Sapphire 0.385ct Loose
Sale price¥14,800
Brazilian Paraiba Tourmaline 0.167ct loose stone (CuO: 1.1%, MnO: 3.6%)
Sale price¥69,800
Tanzanian Cobalt Spinel (Blue Spinel) 0.118ct Loose Stone Japan-Germany
Sale price¥29,800
Cambodian colorless zircon 0.309ct loose stone
Sale price¥4,980
Pakistani emerald 0.436ct loose stone
Sale price¥49,800
Sri Lankan Blue Sapphire 3.8mm/0.279ct Loose
Sale price¥8,800
Sri Lankan Blue Sapphire 4.5mm/0.401ct Loose
Sale price¥12,800
Rhodochrosite from South Africa 4.2mm/0.409ct loose
Sale price¥39,800
Russian demantoid garnet (horsetail recognized) 3mm/0.188ct loose
Sale price¥19,800
Oregon Sunstone from the United States 0.314ct loose stone
Sale price¥14,800
Oregon Sunstone from the United States 4.0mm/0.206ct loose stone
Sale price¥8,800
Oregon Sunstone from the United States 4.0mm/0.204ct loose stone
Sale price¥6,980
Oregon Sunstone from the United States 0.372ct loose stone
Sale price¥12,800
Kenyan Gold Sheen Sapphire 4mm/0.438ct Loose
Sale price¥55,800
Diamond (cabochon cut) 0.183ct loose
Sale price¥24,800
Diamond (cabochon cut) 0.366ct loose
Sale price¥59,800
Brazilian Paraiba Tourmaline in Quartz 4.5mm/0.284ct Loose Stone
Sale price¥22,800
Kenyan Gold Sheen Sapphire 3.6mm/0.302ct Loose Stone
Sale price¥35,800
Kenyan Gold Sheen Sapphire 3.5mm/0.273ct Loose Stone
Sale price¥22,800
Kenyan Gold Sheen Sapphire 4.0mm/0.305ct Loose Stone (Rose Cut)
Sale price¥12,800
Kenyan Gold Sheen Sapphire 3.9mm/0.298ct Loose (Rose Cut)
Sale price¥12,800
Kenyan Gold Sheen Sapphire 0.308ct Loose
Sale price¥12,800
Brazilian Bicolor Pink Euclase 0.236ct Loose Stone, Japan-Germany
Sale price¥128,000
Russian Yellow Diamond Rough (Sawable) 0.306ct Rough (Trigon)
Sale price¥98,000
Diamond 0.171ct loose stone (E, VS2, radiant cut)
Sale price¥35,800
American Benitoite 1.8mm/0.159ct loose stone (gradation)
Sale price¥39,800
Brazilian Imperial Topaz 0.377ct Loose Stone
Sale price¥14,800
Brazilian Lepidocrocite in Quartz 0.484ct Loose Stone
Sale price¥9,800
Brazilian bicolor tourmaline 0.326ct loose stone
Sale price¥8,800
Brazilian Green Tourmaline 0.350ct 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.