Birthstone list
Brazilian Limonite in Topaz 5.709ct loose stone
Sale price¥9,800
Mexican Fire Opal 6.7mm/0.953ct Loose
Sale price¥25,800
Mexican Fire Opal 4.9mm/0.333ct Loose
Sale price¥8,800
Mozambican Rubellite 1.141ct Loose Gemstone
Sale price¥29,800
Brazilian Indigolite Tourmaline 6.052ct Loose Stone JTL
Sale price¥158,000
Brazilian Indicolite Tourmaline 1.616ct Loose Gemstone (JTL Certified)
Sale price¥69,800
Sri Lankan Goethite Topaz 4.992ct Loose Stone
Sale price¥14,800
Green tourmaline 1.190ct loose stone
Sale price¥98,000
Brazilian Green Tourmaline 1.333ct Loose Stone
Sale price¥49,800
Brazilian Green Tourmaline 2.907ct Loose Stone
Sale price¥98,000
Brazilian Green Tourmaline 0.935ct Loose Stone
Sale price¥45,800
Brazilian Green Tourmaline 1.193ct Loose Stone
Sale price¥49,800
Brazilian Green Tourmaline 11.453ct Loose Stone
Sale price¥158,000
Brazilian Green Tourmaline 9.495ct Loose
Sale price¥128,000
Madagascar Bekiri Blue Garnet (Color Change Garnet) 0.365ct Loose Stone
Sale price¥18,800
Brazilian Green Tourmaline 4.374ct Loose Stone
Sale price¥98,000
Pt950 Brazilian Paraiba Tourmaline Ring (Fluid Setting, Oval Cut)
Sale price¥64,800
K18YG rose cut diamond 0.171ct ring
Sale price¥89,800
K18YG American Turquoise 1.04ct Ring (Cat Cut)
Sale price¥79,800
K18PG Madagascar pink sapphire 0.24ct 0.25ct earrings (Asscher cut)
Sale price¥59,800
K18 Indian Iolite Sunstone 0.73ct Tanzanite Ring
Sale price¥188,000
Mexican Fire Opal 0.576ct Loose (Faceted Cut)
Sale price¥9,800
Mexican Fire Opal 0.212ct Loose (Faceted Cut)
Sale price¥8,800
Mexican Fire Opal 1.222ct Loose (Faceted Cut)
Sale price¥12,800
Brazilian Trapiche Amethyst 10.855ct loose stone
Sale price¥6,980
Tanzania Color Change Garnet 0.789ct Loose Stone
Sale price¥9,800
Brazilian bicolor tourmaline 0.502ct loose stone
Sale price¥12,800
Madagascar Yellow Sapphire 0.863ct Loose
Sale price¥18,800
Pink sapphire 4.5mm/0.390ct loose stone
Sale price¥15,800
Purple sapphire 4mm/0.273ct loose stone
Sale price¥12,800
Pink sapphire 0.271ct loose stone
Sale price¥8,800
K18PG Brazilian Paraiba Tourmaline 0.286ct Grandidierite Ring GIA
Sale price¥198,000
Mexican Cantera Opal 4.835ct Loose
Sale price¥19,800
Australian Shell Opal (Shell Opal) 73.321ct Rough Stone
Sale price¥49,800
Russian rough diamond (sawable) 0.125ct loose
Sale price¥29,800
Tanzanite from Tanzania 0.491ct loose stone
Sale price¥8,800
Tanzanite from Tanzania 0.466ct loose stone
Sale price¥8,800
Sri Lankan Moonstone 1.959ct Loose
Sale price¥12,800
Sri Lankan Moonstone 0.561ct Loose
Sale price¥6,980
Mexican Cantera Opal 20.655ct Loose
Sale price¥19,800
Ethiopian Opal 167.191ct Rough Stone
Sale price¥39,800
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.