Colombian Euclase 0.315ct loose stone
Sale price¥39,800
Sillimanite from Sri Lanka 0.372ct loose stone
Sale price¥7,980
Sillimanite from Sri Lanka 0.409ct loose stone
Sale price¥7,980
Sillimanite from Sri Lanka 0.186ct loose stone
Sale price¥7,980
Sillimanite from Sri Lanka 0.376ct loose stone
Sale price¥9,800
Alexandrite 0.201ct loose stone
Sale price¥39,800
Brazilian Green Tourmaline 0.549ct Loose Stone
Sale price¥9,800
[E_27 Yurakucho Marui Takeout] Brazilian Green Tourmaline 0.457ct Loose
Sale price¥15,800
Brazilian Alexandrite 0.094ct loose stone
Sale price¥19,800
[Cat cut] Brazilian green tourmaline 3.254ct loose stone
Sale price¥15,800
Brazilian bicolor tourmaline 0.837ct loose stone
Sale price¥15,800
Brazilian alexandrite 0.173ct loose
Sale price¥49,800
Colombian emerald rough stone 37.764ct (Gachala mine)
Sale price¥598,000
Synthetic Moissanite 10mm/4.342ct Loose Stone
Sale price¥18,800
Tanzanian Chrome Tourmaline 0.840ct Loose Stone
Sale price¥6,980
Colombian Trapiche Emerald 0.317ct Rough Stone
Sale price¥29,800
Russian Demantoid Garnet (Horsetail certified) 2.4mm/0.066ct loose stone
Sale price¥12,800
Colombian Trapiche Emerald 0.338ct Loose
Sale price¥18,800
Colombian Trapiche Emerald 0.923ct Rough Stone
Sale price¥45,800
Brazilian Alexandrite 0.065ct loose stone (princess cut)
Sale price¥14,800
Brazilian Alexandrite 0.073ct loose stone (princess cut)
Sale price¥16,800
Brazilian Alexandrite 0.089ct loose stone (princess cut)
Sale price¥19,800
Tanzanian Color Change Garnet (Alexa Type) 0.767ct Loose Stone
Sale price¥29,800
Emerald 0.354ct loose stone
Sale price¥8,800
Synthetic Moissanite 5.9mm/0.648ct Loose Stone
Sale price¥9,800
Synthetic Moissanite 6.0mm/0.672ct Loose Stone
Sale price¥9,800
Synthetic Moissanite 5.9mm/0.651ct Loose Stone
Sale price¥9,800
Tanzania Bicolor Tsavorite 0.888ct Loose Stone
Sale price¥27,800
Paraiba Tourmaline from Mozambique 0.507ct loose stone
Sale price¥22,800
Synthetic Alexandrite 0.330ct loose stone
Sale price¥9,800
Synthetic Alexandrite 0.502ct loose stone
Sale price¥15,800
Synthetic Alexandrite 0.582ct loose stone
Sale price¥15,800
Synthetic Alexandrite 0.282ct loose stone
Sale price¥9,800
Russian Diopside 0.402ct Loose Stone
Sale price¥8,800
Madagascar sphene 1.002ct loose stone
Sale price¥15,800
Madagascar sphene 0.991ct loose stone
Sale price¥12,800
Madagascar sphene 1.080ct loose stone
Sale price¥12,800
Chrysoprase 3.108ct loose stone
Sale price¥8,800
Chrysoprase 2.959ct loose stone
Sale price¥8,800
Chrysoprase 3.003ct loose stone
Sale price¥9,800

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.