Brazilian Amethyst 9.749ct Loose Stone
Sale price¥15,800
Synthetic Opal 1.804ct Loose
Sale price¥14,800
Synthetic rutile 0.942ct loose stone
Sale price¥14,800
Mexican Cantera Opal 5.887ct Loose
Sale price¥12,800
Mexican Cantera Opal 6.710ct Loose
Sale price¥22,800
Mexican Cantera Opal 7.262ct Loose
Sale price¥19,800
Mexican Cantera Opal 10.986ct Loose
Sale price¥29,800
Brazilian Alexandrite 3.1mm/0.131ct Loose Stone (Rose Cut)
Sale price¥23,800
Brazilian Alexandrite 3mm/0.134ct loose stone (rose cut)
Sale price¥24,800
Myanmar Trapiche Sapphire 0.206ct Loose
Sale price¥18,800
Brazilian Tinkerbell Quartz (Pink Fire Quartz) 4.868ct Loose Stone
Sale price¥14,800
Brazilian Imperial Topaz 0.744ct Loose Stone
Sale price¥12,800
Russian Diamond Rough (Sawable) 0.103ct Loose (Trigon)
Sale price¥25,800
Blue sapphire 0.287ct loose
Sale price¥12,800
Almandine Garnet 1.058ct Loose Stone
Sale price¥12,800
Almandine Garnet 1.485ct Loose Stone
Sale price¥15,800
Almandine Garnet 1.988ct Loose Stone
Sale price¥18,800
Almandine Garnet 1.388ct Loose Stone
Sale price¥12,800
Almandine Garnet 1.471ct Loose Stone
Sale price¥15,800
Tanzania Bicolor Zoisite 4.7mm/0.486ct Loose Stone
Sale price¥12,800
Tanzanite from Tanzania 0.497ct loose stone
Sale price¥12,800
Tanzania Bicolor Zoisite 4.8mm/0.540ct Loose Stone
Sale price¥12,800
Tanzania Bicolor Zoisite 4.6mm/0.489ct Loose Stone
Sale price¥12,800
Brazilian Tinkerbell Quartz (Pink Fire Quartz) 0.344ct Loose Stone
Sale price¥12,800
Brazilian Green Tourmaline 0.883ct Loose Stone
Sale price¥19,800
[12553607] Swiss Blue Topaz 2.384ct Loose
Sale price¥19,800
Pakistani Veirinite 0.073ct loose stone
Sale price¥11,000
Mexican Cantera Opal 4.158ct Loose
Sale price¥15,800
Mexican Cantera Opal 7.720ct Loose
Sale price¥22,800
Sri Lankan Yellow Sapphire 0.349ct Loose
Sale price¥12,800
Russian rough diamond (sawable) 0.088ct loose
Sale price¥22,800
Tanzanian Lavender Tanzanite 0.577ct Loose Stone
Sale price¥15,800
Tanzanian bicolor tanzanite 0.573ct loose stone
Sale price¥15,800
Tanzanian Lavender Tanzanite 0.558ct Loose Stone
Sale price¥12,800
Synthetic Alexandrite 0.471ct loose stone
Sale price¥14,800
Tanzanian Lavender Tanzanite 0.382ct Loose Stone
Sale price¥12,800
Tanzanian Lavender Tanzanite 0.498ct Loose Stone
Sale price¥14,800
Brazilian Alexandrite 0.111ct loose stone
Sale price¥24,800
Brazilian Euclase 0.289ct loose stone
Sale price¥12,800
Paraiba tourmaline from Brazil 0.154ct loose
Sale price¥29,800
Purple spinel 0.955ct loose stone
Sale price¥19,800
Greenland Tugtupite 0.546ct loose stone
Sale price¥29,800
Greenland Tugtupite 0.642ct loose stone
Sale price¥25,800
Greenland Tugtupite 0.140ct loose stone
Sale price¥15,800
[Confetti Cut] Color Shift Amethyst 3.499ct Loose Stone
Sale price¥22,800
Brazilian Alexandrite 0.072ct loose stone (princess cut)
Sale price¥18,800
Brazilian Alexandrite 0.068ct loose stone (princess cut)
Sale price¥17,800
Brazilian Alexandrite 0.069ct loose stone (princess cut)
Sale price¥17,800
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.
業界発展のための後進育成や事業協力、宝石の国スリランカの子どもたちへの支援活動など、KARATZの取り組みについてご紹介いたします。
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.