Tanzanian grey spinel 5.1mm/0.605ct loose stone
Sale price¥12,800
Australian black opal 0.599ct loose stone
Sale price¥18,800
Australian black opal 0.693ct loose stone
Sale price¥8,800
[E_27 Yurakucho Marui Take-out] Australian black opal 0.540ct loose
Sale price¥14,800
Brazilian Dendritic Agate 0.845ct Loose Stone
Sale price¥8,800
Brazilian Tinkerbell Quartz (Pink Fire Quartz) 0.631ct Loose Stone
Sale price¥8,800
Brazilian Euclase 0.615ct Loose Stone
Sale price¥9,800
Indian Moonstone 0.881ct Loose
Sale price¥8,800
Indian Moonstone 0.760ct Loose
Sale price¥8,800
Synthetic Alexandrite 0.502ct loose stone
Sale price¥15,800
Synthetic Alexandrite 0.582ct loose stone
Sale price¥15,800
Brazilian Sky Blue Topaz (untreated) 0.771ct loose stone
Sale price¥9,800
Brazilian Sky Blue Topaz (untreated) 0.968ct loose stone
Sale price¥12,800
Madagascar sphene 0.991ct loose stone
Sale price¥12,800
Sri Lankan Purple Sapphire 0.797ct Loose
Sale price¥18,800
Brazilian Rubellite 0.897ct loose stone
Sale price¥29,800
Brazilian Paraiba Tourmaline in Quartz 6.0mm/0.568ct Loose Stone
Sale price¥22,800
Brazilian bicolor tourmaline 0.644ct loose stone
Sale price¥9,800
Silky sapphire from Sri Lanka 0.975ct loose
Sale price¥8,800
Sri Lankan Silky Sapphire 0.586ct Loose
Sale price¥9,800
Tanzanite from Tanzania 6.0mm/0.797ct loose stone
Sale price¥12,800
Rutile Inphenakite from Madagascar 0.825ct loose stone
Sale price¥7,980
Rutile Inphenakite from Madagascar 0.967ct loose stone
Sale price¥8,800
Rutile Inphenakite from Madagascar 0.784ct loose stone
Sale price¥7,980
Tanzanian Purple Sapphire 0.681ct Loose Stone (Color Shift)
Sale price¥19,800
Cambodian colorless zircon 0.676ct loose stone (orange fluorescence)
Sale price¥6,980
Cambodian colorless zircon 0.775ct loose stone (orange fluorescence)
Sale price¥8,800
Brazilian Petalite 0.615ct loose stone
Sale price¥6,980
Madagascar pink sapphire 0.527ct loose stone
Sale price¥18,800
Madagascar Purple Sapphire 0.523ct Loose
Sale price¥15,800
Brazilian Bicolor Paraiba Tourmaline 0.896ct Loose Stone
Sale price¥18,800
Brazilian Bicolor Paraiba Tourmaline 0.851ct Loose Stone
Sale price¥18,800
Mexican Opal (Faceted Cut) 0.640ct Loose
Sale price¥14,800
Mexican Opal (Faceted Cut) 0.550ct Loose
Sale price¥25,800
Mexican Fire Opal 0.921ct Loose
Sale price¥14,800
Sri Lankan purple spinel 0.864ct loose stone
Sale price¥29,800
Colombian Trapiche Emerald 0.712ct Loose
Sale price¥39,800
Brazilian Blue Tourmaline 0.650ct Loose
Sale price¥9,800
Oregon Sunstone from the United States 0.78ct loose stone (bicolor)
Sale price¥7,980
African Tourmaline 0.711ct Loose Stone
Sale price¥5,980
Mexican Fire Opal 0.934ct Loose
Sale price¥3,980
Brazilian bicolor tourmaline 0.540ct loose stone
Sale price¥5,980
Tanzanian Tourmaline 0.676ct Loose Stone
Sale price¥5,980
Mongolian bicolor andesine 6.1mm/0.952ct loose stone
Sale price¥15,800

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.