Unheated Mozambique Ruby 0.231ct Loose
Sale price¥25,800
Unheated Mozambique Ruby 0.220ct Loose
Sale price¥25,800
Brazilian bicolor tourmaline 0.914ct loose stone
Sale price¥12,800
[E_27 Yurakucho Marui Take-out] Myanmar Ruby 0.283ct Loose
Sale price¥29,800
Madagascar Apatite 1.038ct Loose
Sale price¥12,800
Madagascar Pink Tourmaline 0.543ct Loose Stone
Sale price¥14,800
Brazilian Morganite 1.296ct loose stone
Sale price¥8,800
Brazilian bicolor tourmaline 0.582ct loose stone
Sale price¥6,980
Brazilian Rubellite (Red Tourmaline) 3.844ct Loose Stone
Sale price¥128,000
Brazilian bicolor tourmaline 0.820ct loose stone
Sale price¥25,800
Tanzanian Cobalt Spinel (Blue Spinel) 0.118ct Loose Stone Japan-Germany
Sale price¥29,800
[E_27 Yurakucho Marui Take-out] Russian Oil-Free Emerald 0.640ct Loose GIA
Sale price¥198,000
Pakistani emerald 0.436ct loose stone
Sale price¥49,800
Tanzanite from Tanzania 0.804ct loose stone
Sale price¥24,800
Tanzanite from Tanzania 0.856ct loose stone
Sale price¥29,800
Myanmar Red Spinel 0.181ct Loose
Sale price¥8,800
Mozambique Rubellite 1.706ct Loose Stone
Sale price¥39,800
Brazilian Bicolor Pink Euclase 0.236ct Loose Stone, Japan-Germany
Sale price¥128,000
Myanmar Taaffeite 0.650ct Loose GIT
Sale price¥39,800
Brazilian Lazurite (Azurite) 0.083ct loose stone
Sale price¥24,800
Euclase from Zimbabwe 0.040ct loose
Sale price¥29,800
Tanzanite from Tanzania 1.243ct loose stone
Sale price¥45,800
Tanzanite from Tanzania 0.567ct loose stone
Sale price¥14,800
Madagascar sphene 6.506ct loose stone
Sale price¥98,000
Bicolor Benitoite 0.601ct Loose Japanese-German Edition
Sale price¥458,000
Indian Rainbow Quartz (Iridescent Quartz) 0.940ct Loose Stone
Sale price¥158,000
Colombian pyrite-mica emerald 0.739ct loose stone
Sale price¥36,800
Colombian pyrite-mica emerald 0.628ct loose stone
Sale price¥35,800
Colombian pyrite-mica emerald 0.649ct loose stone
Sale price¥29,800
Colombian pyrite-mica emerald 0.983ct loose stone
Sale price¥49,800
Brazilian Paraiba Tourmaline 0.230ct Loose GIA (CuO: 0.9%, MnO: 1.1%)
Sale price¥158,000
Oregon Sunstone from the United States 0.566ct loose stone
Sale price¥12,800
Pakistani Veirinite 0.090ct loose stone
Sale price¥19,800
Zimbabwean Apatite (UV type) 0.585ct loose stone
Sale price¥12,800
Zimbabwean Apatite (UV type) 1.393ct loose stone
Sale price¥29,800
Paraiba Tourmaline from Mozambique 0.248ct loose stone
Sale price¥12,800
Paraiba Tourmaline from Mozambique 0.223ct loose stone
Sale price¥12,800
[E_27 Yurakucho Marui Take-out] Brazilian Morganite 4.720ct Loose
Sale price¥98,000
Montana Sapphire 0.405ct Loose (Green Sapphire)
Sale price¥9,800
Montana Sapphire 0.331ct Loose (Bi-Color Sapphire)
Sale price¥8,800

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.

The fifth reprint has been decided and is now on sale at bookstores nationwide and online.
Written by KARATZ, book “Jewelry Illustrated Book”
The book provides explanations about over 300 types of gemstones, from new standard birthstones to rare stones that are hard to find, as well as a diary of our company representative, Mr. Koyama's, gemstone shopping experience in Thailand and Sri Lanka, and tips for photographing gemstones, allowing you to learn about the appeal of gemstones from various perspectives.