Montana Sapphire 0.217ct Loose (Blue Sapphire)
Sale price¥8,800
Tanzanite from Tanzania 4.7mm/0.503ct loose stone
Sale price¥14,800
Zimbabwean Euclase 0.107ct loose stone
Sale price¥79,800
Tanzania Magnesioaxinite 0.198ct loose stone by Nikkei
Sale price¥69,800
Sri Lankan saffron 0.264ct loose stone with certificate
Sale price¥22,800
Star Ruby 0.461ct Loose Stone with Certificate
Sale price¥18,800
Sri Lankan Star Ruby 0.564ct Loose Stone with Certificate
Sale price¥24,800
Yellow Diamond 4.7mm/0.390ct Loose (LIGHT YELLOW, VVS1, 3Excellent H&C)
Sale price¥49,800
Nigerian Green Beryl 0.340ct Loose Stone
Sale price¥6,980
Namibian Jeremejevite 0.193ct loose stone JTL catalogue
Sale price¥98,000
Madagascar Bekiri Blue Garnet (Color Change Garnet) 0.272ct Loose Stone
Sale price¥19,800
Madagascar Bekiri Blue Garnet (Color Change Garnet) 0.272ct Loose Stone
Sale price¥19,800
Nigerian Morganite 0.419ct loose stone
Sale price¥9,800
Blue spinel 0.451ct loose stone
Sale price¥18,800
Sri Lankan Musgravite 0.389ct Loose Stone (Tubular Inclusions) Nikkei
Sale price¥398,000
Malawi Bicolor Zircon 0.355ct Loose Stone
Sale price¥12,800
Bicolor sapphire 0.244ct loose
Sale price¥15,800
Bicolor sapphire 0.180ct loose
Sale price¥12,800
Bicolor sapphire 0.225ct loose
Sale price¥15,800
Bicolor sapphire 0.405ct loose
Sale price¥25,800
Bicolor sapphire 0.404ct loose stone
Sale price¥39,800
Afghanistan Blue Tourmaline 5.0mm/0.457ct Loose Stone
Sale price¥19,800
Brazilian Green Tourmaline 4.1mm/0.259ct Loose Stone
Sale price¥12,800
Brazilian Green Tourmaline 0.236ct Loose Stone
Sale price¥9,800
Brazilian Green Tourmaline 0.270ct Loose
Sale price¥12,800
Vietnam Aquamarine 4.5mm/0.319ct Loose Stone
Sale price¥7,980
Tanzanite 0.513ct loose stone (sugarloaf cut) from Tanzania
Sale price¥9,800
Myanmar Purple Spinel 0.311ct Loose Stone
Sale price¥8,800
Canadian Shortite 0.423ct Loose Stone, Japan-Germany Mirror
Sale price¥69,800
Brown diamond 0.554ct loose (cabochon cut, SI class equivalent)
Sale price¥69,800
Sri Lankan Yellow Sapphire 0.297ct Loose
Sale price¥8,800
Sri Lankan Yellow Sapphire 0.300ct Loose
Sale price¥12,800
Sri Lankan Star Sapphire 5.0mm/0.892ct Loose Stone
Sale price¥9,800
Myanmar color change zircon 0.626ct loose stone
Sale price¥55,800
Yellow Diamond 0.551ct Loose (Cabochon Cut)
Sale price¥49,800
Tanzanite from Tanzania 0.432ct loose stone
Sale price¥9,800
Tanzanite from Tanzania 0.580ct loose stone
Sale price¥14,800
Tanzanian bicolor sapphire 0.571ct loose stone
Sale price¥15,800
Brazilian Paraiba Tourmaline in Quartz 0.295ct Loose Stone
Sale price¥14,800
Tanzanite from Tanzania 0.469ct loose stone
Sale price¥14,800
Madagascar Blue Sapphire 4.0mm/0.326ct Loose
Sale price¥11,000
Tanzanite from Tanzania 0.269ct loose stone
Sale price¥9,800
Tanzanian Kornerupine 0.172ct loose stone
Sale price¥18,800
American Red Beryl 0.140ct Loose
Sale price¥29,800
American Benitoite 0.286ct loose stone
Sale price¥158,000
Afghanistan Bicolor Tourmaline 0.672ct Loose Stone
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.