Unheated sapphire 2.430ct loose GIA
Sale price¥298,000
Brazilian mint-colored emerald 0.945ct loose stone
Sale price¥25,800
0.170ct loose blue sapphire from Madagascar
Sale price¥8,800
0.333ct loose sapphire
Sale price¥8,800
Pink sapphire 0.179ct loose stone
Sale price¥6,980
0.145ct loose pink sapphire from Madagascar
Sale price¥6,980
Mozambique pink sapphire 0.169ct loose stone
Sale price¥6,980
Zambian emerald 0.135ct loose stone
Sale price¥8,800
Zambian emerald 0.159ct loose stone
Sale price¥8,800
Colombian mint-colored emerald 0.214ct loose stone
Sale price¥8,800
Diamond 0.618ct loose (I, I1, tree cut)
Sale price¥128,000
Fire Opal 2 Stone Pair 4mm/0.336ct Loose
Sale price¥3,980
Blue sapphire 4.0mm/0.314ct loose stone
Sale price¥112,800
Colombian emerald 0.101ct loose stone
Sale price¥15,800
Fire opal 1.360ct loose
Sale price¥9,800
Green sapphire 7.545ct loose (spade cut)
Sale price¥59,800
Colombian emerald 0.222ct loose stone
Sale price¥59,800
Mexican Fire Opal 1.580ct Loose
Sale price¥25,800
Australian opal 14.837ct loose
Sale price¥98,000
Mexican Opal 8mm/1.430ct Loose
Sale price¥25,800
Sierra Leone sapphire 1.470ct loose
Sale price¥9,800
Sierra Leone sapphire 1.210ct loose
Sale price¥7,980
Bicolor star sapphire from Myanmar 1.190ct loose (pink sapphire)
Sale price¥25,800
Australian boulder opal 9.120ct loose
Sale price¥98,000
South African rough diamond (sawable) 0.105ct rough (with trigon)
Sale price¥39,800
Bicolor pink star sapphire from Mogok 0.360ct loose
Sale price¥24,800
Australian boulder opal 28.880ct loose
Sale price¥59,800
Australian boulder opal 1.675ct loose
Sale price¥14,800
Australian boulder opal 1.868ct loose
Sale price¥18,800
Mexican Cantera Opal 1.120ct Loose
Sale price¥8,800
Australian Opal 0.374ct Loose
Sale price¥6,980
Tanzanian purple sapphire 0.355ct loose stone
Sale price¥9,800
Mexican Cantera Opal 14.690ct Loose
Sale price¥12,800
Australian boulder opal 1.173ct loose
Sale price¥5,980
Australian boulder opal 1.156ct loose
Sale price¥3,980
Australian boulder opal 0.874ct loose
Sale price¥3,980
Bicolor sapphire 1.030ct loose from Windsor, Tanzania
Sale price¥89,800
[Posted 12549094] Sri Lankan sapphire cat's eye 3.739ct loose
Sale price¥59,800
Greenland Ruby 3.6mm/0.210ct Loose Stone with Certificate
Sale price¥45,800
Australian boulder opal 1.457ct loose stone
Sale price¥9,800
Australian White Opal, 6.0mm/0.697ct loose stone (rose cut)
Sale price¥8,800
Ruby 0.295ct loose
Sale price¥39,800
Greenland Sapphire 4.0mm/0.328ct Loose Stone with Certificate
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.