Untreated Sri Lankan Star Sapphire 0.961ct Loose Stone
Sale price¥11,800
Untreated green tourmaline from Brazil, 0.596 ct, loose
Sale price¥9,800
Brazilian Paraiba Tourmaline 0.048ct (CuO:1.5% MnO:1.0%)
Sale price¥35,800
Brazilian Paraiba Tourmaline 0.051ct Loose Stone (CuO:1.1% MnO:0.6%)
Sale price¥35,800
Brazilian Paraiba Tourmaline 0.052ct Loose Stone (CuO:1.4% MnO:1.1%)
Sale price¥35,800
Brazilian Paraiba Tourmaline 0.052ct Loose Stone (CuO:1.2% MnO:1.2%)
Sale price¥35,800
0.079ct Loose Brazilian Paraiba Tourmaline (CuO: 1.6% MnO: 2.8%)
Sale price¥29,800
Paraiba Tourmaline Loose Stone from Brazil 0.068ct (CuO: 1.1% MnO: 0.1%)
Sale price¥45,800
K18YG Tanzanian Tanzanite 0.344ct Pendant Top
Sale price¥39,800
Pink Diamond 0.074ct Loose (FANCY LIGHT PURPLE PINK, I-1)
Sale price¥39,800
Pink Diamond (Treated) 0.095ct Loose (FANCY VIVID PURPLISH PINK, SI1)
Sale price¥26,800
Loose White Diamond 0.108ct (FANCY WHITE, I-1)
Sale price¥55,800
K18YG Indian Moonstone Cat's Eye 1.438ct Ring
Sale price¥79,800
Pt950 Tanzania Lavender Tanzanite 1.51ct Ring
Sale price¥98,000
Pt950 Ice Blue Diamond (Treatment) 0.197ct Ring
Sale price¥128,000
Diamond 0.402ct Loose (H, VS2, Flanders Cut)
Sale price¥79,800
Gray Diamond 0.107ct Loose (FANCY GRAY, I-1)
Sale price¥39,800
Iolite Sunstone from India 0.472ct Loose Gemstone
Sale price¥5,980
3.020 ct Pakistani emerald in quartz loose gemstone
Sale price¥18,800
American Benitoite 0.242ct Loose
Sale price¥158,000
[Dandelion Cut] 7mm/1.412ct Sphene Loose Stone from Madagascar
Sale price¥59,800
Star Sapphire from Sri Lanka, 4.758 ct Loose Stone (Color Shift)
Sale price¥158,000
0.517ct loose blue sapphire from Sri Lanka
Sale price¥18,800
Malawi Moonstone 2.445ct Loose
Sale price¥18,800
4.168ct loose Malawi Moonstone
Sale price¥39,800
Malawi Moonstone (Malawi Moonstone) 3.517 ct Loose
Sale price¥35,800
Malawi Moonstone 3.912ct Loose Gemstone
Sale price¥37,800
Malawi Moonstone (Malawi Moonstone) 5.767ct Loose
Sale price¥45,800
Malawi Moonstone 4.392ct Loose
Sale price¥32,800
Malawi Moonstone 4.731ct Loose Stone
Sale price¥29,800
Malawi Moonstone (Malawi Moonstone) 4.777ct Loose
Sale price¥45,800
Cambodian Blue Zircon 1.606ct Loose
Sale price¥18,800
Cambodian Blue Zircon (Ratanakiri Blue) 1.205ct Loose Stone
Sale price¥18,800
Pink Diamond 2.1mm/0.034ct Loose (FANCY PURPLE PINK, I-1)
Sale price¥34,800
Madagascar Apatite 19.863ct Loose
Sale price¥128,000
Bicolor Grossular Garnet (Bicolor Tsavorite) from Kenya, 0.761 ct, Loose
Sale price¥22,800
Australian black opal, 0.666ct loose
Sale price¥12,800
Nigerian Cobalt Garnet 0.095ct Loose with Certificate
Sale price¥18,800
0.787 ct faceted Dumortierite in Quartz from Brazil
Sale price¥7,980
Brazilian Dumortierite in Quartz 0.690ct Loose Stone (Faceted Cut)
Sale price¥6,980
Brazilian Dumortierite in Quartz 0.880ct Loose Stone (Faceted Cut)
Sale price¥9,800
Brazilian Dumortierite in Quartz 1.112ct Loose Gemstone (Faceted Cut)
Sale price¥11,000
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.