Birthstone list
Brazilian citrine 1.337ct loose stone
Sale price¥3,980
Tourmaline cat's eye 4.790ct loose
Sale price¥6,980
Tourmaline cat's eye 4.590ct loose
Sale price¥12,800
Bicolor tourmaline 0.880ct loose
Sale price¥8,800
Diamond 2.810ct rough stone
Sale price¥9,800
[On sale at 10pm on August 19th] Sliced Trapiche Diamond 0.228ct Loose
Sale price¥18,800
Mexican Cantera Opal 2.125ct Loose
Sale price¥39,800
Mexican Cantera Opal 5.882ct Loose
Sale price¥39,800
Sri Lankan Yellow Sapphire 0.300ct Loose
Sale price¥15,800
Salt and Pepper Diamond 5.2mm/0.863ct Loose (Cabochon Cut)
Sale price¥98,000
Camellia Cut Ethiopian Opal 5.083ct/14mm Loose
Sale price¥69,800
Afghanistan Oil-Free Emerald 0.100ct Loose GIA
Sale price¥98,000
Colombian emerald, 17.581ct rough, Japan-Germany kanji
Sale price¥45,800
0.060ct loose, oil-free emerald from Madagascar, GIA
Sale price¥69,800
Pakistani Peridot 0.361ct Loose Stone
Sale price¥4,980
Pakistani Peridot 0.408ct Loose Stone
Sale price¥6,980
American Peridot 0.458ct Loose Stone
Sale price¥6,980
Pakistani Peridot 0.410ct Loose Stone
Sale price¥6,980
Pakistani Peridot 0.376ct Loose Stone
Sale price¥6,980
American Peridot 0.546ct Loose Stone
Sale price¥5,980
American Peridot 0.339ct Loose Stone
Sale price¥6,980
Mexican fire opal (faceted cut) 0.167ct loose stone
Sale price¥8,800
Mexican fire opal (faceted cut) 0.515ct loose stone
Sale price¥12,800
Mexican fire opal (faceted cut) 0.198ct loose stone
Sale price¥8,800
Mexican fire opal (faceted cut) 0.417ct loose stone
Sale price¥8,800
Mexican Fire Opal (Faceted) 5.5mm/0.447ct Loose Stone
Sale price¥12,800
Indian Moonstone 6.2mm/0.810ct Loose
Sale price¥8,800
Indian Moonstone 6.2mm/0.775ct Loose Stone
Sale price¥7,980
Ethiopian Opal 6.6mm/0.635ct Loose
Sale price¥9,800
Brazilian Aquamarine 0.627ct Loose Stone
Sale price¥6,980
Colombian emerald rough stone 6.590ct
Sale price¥15,800
Yellow tourmaline 2.290ct loose
Sale price¥8,800
Australian boulder opal 13.190ct loose
Sale price¥18,800
Paraiba tourmaline from Brazil 0.055ct loose (CuO:1.5%,MnO:3.2%)
Sale price¥39,800
Paraiba tourmaline from Brazil 0.066ct loose (CuO:1.7%,Mn0:2.1%)
Sale price¥29,800
Green opal 15.950ct loose
Sale price¥29,800
Madeira Citrine 6mm/0.914ct loose
Sale price¥8,800
Bicolor imperial topaz 1.725ct loose
Sale price¥79,800
Tanzanite 2.726ct loose
Sale price¥110,000
South African green diamond rough (makeable) 0.298ct loose
Sale price¥69,800
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.