Mexican Cantera Opal 3.280ct Loose
Sale price¥9,800
Afghanite 0.447ct loose stone from Afghanistan, Japan-Germany
Sale price¥8,800
Afghanite 0.333ct loose stone from Afghanistan, Japan-Germany
Sale price¥8,800
Afghanite from Afghanistan 0.250ct loose stone
Sale price¥6,980
Spanish Andalusite 0.317ct loose stone
Sale price¥8,800
Mexican Fire Opal 4.2mm/0.182ct Loose
Sale price¥8,800
Mexican Topaz 1.470ct Loose Stone
Sale price¥7,980
Myanmar Purple Spinel 0.650ct Loose
Sale price¥12,800
Brazilian Dendritic Quartz 4.645ct Loose Stone
Sale price¥9,800
Brazilian Paraiba Tourmaline in Quartz 2.403ct loose stone
Sale price¥45,800
Spanish Sphalerite 1.609ct loose stone
Sale price¥19,800
Pt900 Kashmir unheated sapphire 1.14ct / diamond 0.70ct ring GIA
Sale price¥1,580,000
Pt900 Russian Demantoid Garnet (Horsetail) 0.30ct and Diamond 0.30ct Ring
Sale price¥128,000
Hackmanite rough stone from Afghanistan, 7.183ct
Sale price¥39,800
Brazilian Garden Quartz 5.592ct Loose Stone
Sale price¥12,800
Purple sapphire 0.419ct loose stone
Sale price¥15,800
Cambodian colorless zircon 1.218ct loose stone (orange fluorescence)
Sale price¥12,800
Orange Hackmanite from Afghanistan 1.101ct loose stone
Sale price¥19,800
Brazilian Rock Crystal 0.936ct Loose Stone
Sale price¥6,980
Congo Dioptase 52.488ct rough stone
Sale price¥19,800
Hokkaido Opal 12.492ct Loose Patch
Sale price¥7,980
Congo Dioptase 34.022ct rough stone
Sale price¥15,800
Congo Dioptase 85.471ct rough stone
Sale price¥34,800
Myanmar Podretteite 0.407ct loose stone [Gemstone Encyclopedia]
Sale price¥128,000
Zimbabwe Bicolor Euclase 0.405ct Loose Stone by Nikkei
Sale price¥298,000
Colombian emerald rough stone 37.764ct (Gachala mine)
Sale price¥598,000
K18YG Afghan Kunzite 0.74ct, Tanzanite, Sapphire Ring
Sale price¥79,800
[Takeshi Yamamoto] Bicolor fluorite 15.624ct loose stone
Sale price¥45,800
[Takeshi Yamamoto] Rose quartz 25.017ct loose stone
Sale price¥59,800
[Takeshi Yamamoto] Rock crystal 78.580ct loose stone
Sale price¥98,000
[Takeshi Yamamoto] Ametrine 20.856ct loose stone
Sale price¥98,000
Myanmar Color Change Zircon 3.7mm/0.323ct Loose Stone
Sale price¥25,800
Brazilian Paraiba Tourmaline in Quartz 0.556ct Loose Stone
Sale price¥15,800
Brown diamond (sugarloaf cut) 0.278ct loose (SI class equivalent)
Sale price¥45,800
Yellow Diamond (Cabochon Cut) 0.185ct Loose
Sale price¥25,800
Brazilian pink tourmaline 1.018ct loose stone
Sale price¥29,800
Colombian pyrite in emerald 15.291ct loose
Sale price¥1,000,000
Brazilian Paraiba Tourmaline in Quartz 1.171ct Loose Stone
Sale price¥18,800
Brazilian Paraiba Tourmaline in Quartz 1.674ct loose stone
Sale price¥19,800
Brazilian Morganite 0.591ct loose stone
Sale price¥3,980
Brazilian copper rutilated quartz 6.8mm/1.206ct loose stone
Sale price¥8,800
Tanzania Bicolor Zoisite 4.6mm/0.333ct Loose Stone
Sale price¥8,800
Tanzania Bicolor Zoisite 4.0mm/0.255ct Loose Stone
Sale price¥9,800
Tanzania Bicolor Zoisite 4.0mm/0.246ct Loose Stone
Sale price¥8,800
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.