Emerald 0.354ct loose stone
Sale price¥8,800
Tanzanian Almandine Garnet 34.581ct Loose Stone
Sale price¥158,000
Burmese gray spinel 0.827ct loose stone
Sale price¥28,800
Tanzania gray spinel 0.844ct loose stone
Sale price¥18,800
Tanzania Mahenge Spinel (Hot Pink Spinel) 0.148ct Loose Stone
Sale price¥14,800
Burmese hot pink spinel 0.181ct loose stone
Sale price¥18,800
Cambodian bicolor zircon 1.668ct loose stone
Sale price¥25,800
Australian black opal 3.298ct loose
Sale price¥29,800
Australian black opal 4.528ct loose
Sale price¥39,800
Australian black opal 2.591ct loose stone
Sale price¥39,800
Australian black opal 1.399ct loose
Sale price¥22,800
Australian black opal 0.599ct loose stone
Sale price¥18,800
Australian black opal 0.693ct loose stone
Sale price¥8,800
Australian black opal 3.159ct loose
Sale price¥39,800
[E_27 Yurakucho Marui Take-out] Australian black opal 0.540ct loose
Sale price¥14,800
Australian black opal 0.327ct loose stone
Sale price¥7,980
Brazilian Flower Rutile in Quartz 5.336ct Loose Stone
Sale price¥19,800
1.085ct Blue Apatite Loose Stone from Madagascar
Sale price¥8,800
Madagascar Blue Apatite 1.110ct Loose Stone
Sale price¥8,800
Sri Lankan Purple Sapphire 0.797ct Loose
Sale price¥18,800
Brazilian Rubellite 0.897ct loose stone
Sale price¥29,800
Montana sapphire 0.382ct loose stone
Sale price¥6,980
Sri Lankan Silky Sapphire 1.166ct Loose
Sale price¥12,800
Silky sapphire from Sri Lanka 0.975ct loose
Sale price¥8,800
Sri Lankan Silky Sapphire 0.586ct Loose
Sale price¥9,800
Mexican Opal (Faceted Cut) 0.640ct Loose
Sale price¥14,800
American Red Beryl 0.130ct Loose
Sale price¥29,800
Tanzania Color Change Chrome Tourmaline 13.194ct Loose Stone Chuhokan
Sale price¥398,000
Tanzania Magnesioaxinite 0.179ct loose stone by Nikkei
Sale price¥79,800
Namibian Jeremejevite 0.194ct loose stone by Nikkei
Sale price¥15,800
Pigeon Blood Ruby 0.400ct Loose AIGS
Sale price¥55,800
Mexican Opal 1.639ct Loose (Contralus Opal)
Sale price¥29,800
Mexican Fire Opal (Faceted) 1.961ct Loose
Sale price¥29,800
Sri Lankan Chrysoberyl Cat's Eye 0.532ct Loose Stone
Sale price¥5,980
Unheated Ruby 0.330ct Loose AIGS
Sale price¥35,800
Pigeon Blood Ruby 0.280ct Loose AIGS
Sale price¥45,800
Brazilian Indigolite Tourmaline 0.626ct Loose Stone JTL
Sale price¥18,800
Burmese Ruby 0.418ct Loose Stone Japan-Germany
Sale price¥35,800
Burmese unheated ruby 0.245ct loose stone by Nikkei
Sale price¥39,800
Burmese Ruby 0.239ct Loose
Sale price¥9,800
Color shift amethyst 1.216ct loose stone
Sale price¥8,800
Madagascar sphene 1.386ct loose stone
Sale price¥12,800
Madagascar sphene 0.673ct loose stone
Sale price¥15,800
Pakistani Veirinite 0.096ct loose stone
Sale price¥12,800
Australian black opal 0.386ct loose stone
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.

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.