Manganotantalite from Afghanistan 1.868ct loose stone
Sale price¥69,800
Brazilian Tinkerbell Quartz (Pink Fire Quartz) 1.584ct loose
Sale price¥18,800
[E_27 Yurakucho Marui Take-out] Almandine Garnet 1.049ct Loose
Sale price¥15,800
Sillimanite from Sri Lanka 1.704ct loose stone
Sale price¥19,800
Spanish Sphalerite 1.127ct loose stone
Sale price¥14,800
Pink tourmaline 1.157ct loose stone
Sale price¥18,800
Brazilian bicolor tourmaline 1.538ct loose stone
Sale price¥39,800
Bicolor Tanzanite 1.677ct rough stone
Sale price¥8,800
Purple Zoisite 1.354ct rough stone
Sale price¥9,800
Colombian emerald with pyrite 1.902ct rough stone
Sale price¥29,800
Colombian emerald 1.329ct rough stone
Sale price¥19,800
Mexican Opal 1.666ct Loose
Sale price¥14,800
Unheated color change sapphire 1.070ct loose stone
Sale price¥158,000
Lavender quartz (scorolite) 1.130ct loose stone
Sale price¥6,980
South African Sugilite 7.3mm/1.034ct loose stone
Sale price¥18,800
Sri Lankan Purple Spinel 1.638ct Loose Stone, Japan-Germany Exchange
Sale price¥69,800
Sri Lankan Purple Star Sapphire 1.163ct Loose
Sale price¥39,800
Madagascar sphene 1.380ct loose stone
Sale price¥49,800
Almandine Garnet 1.255ct Loose Stone
Sale price¥14,800
[E_27 Yurakucho Marui Take-out] Mexican Water Opal 1.794ct Loose
Sale price¥39,800
Mexican Opal 9.6mm/1.803ct Loose (Contralus Opal)
Sale price¥69,800
Chrysoberyl cat's eye 1.088ct loose stone
Sale price¥8,800
Cristobalite in Quartz 1.660ct Loose
Sale price¥9,800
Pakistani Oil in Quartz 1.337ct Loose Stone (Moving Bubbles)
Sale price¥19,800
Brazilian Aquamarine 1.071ct Loose Stone (Phantom Cut)
Sale price¥9,800
[E_27 Yurakucho Marui Take-out] Non-Oil Emerald 1.370ct Loose GIA
Sale price¥1,580,000
Diamond rough stone 1.293ct
Sale price¥5,980
Madagascar Bicolor Sphene 1.551ct Loose Stone
Sale price¥19,800
Australian Opal 1.170ct Loose
Sale price¥18,800
Australian black opal 1.107ct loose stone
Sale price¥35,800
[E_27 Yurakucho Marui Takeout] Royal Blue Sapphire 1.010ct Loose AIGS
Sale price¥198,000
Sri Lankan Star Sapphire 1.339ct Loose
Sale price¥15,800
Sri Lankan Star Sapphire 1.682ct Loose
Sale price¥15,800
Sri Lankan Star Sapphire 1.225ct Loose
Sale price¥15,800
[E_27 Yurakucho Marui Takeout] Bicolor Tourmaline 1.074ct Loose
Sale price¥15,800
Brazilian bicolor tourmaline 1.675ct loose stone
Sale price¥39,800
Tanzanite 1.004ct loose stone
Sale price¥22,800
Bicolor Zoisite 1.100ct Loose Stone (Bicolor Tanzanite)
Sale price¥19,800
Mexican Fire Opal 1.833ct Loose
Sale price¥49,800
Mexican Fire Opal 1.424ct Loose
Sale price¥49,800
Mexican Fire Opal 1.877ct Loose
Sale price¥14,800
Mexican water opal 1.558ct loose stone
Sale price¥18,800

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.