Australian boulder opal 3.930ct loose
Sale price¥39,800
Boulder opal 7.680ct loose
Sale price¥29,800
Boulder opal 4.980ct loose
Sale price¥29,800
Boulder opal 6.160ct loose
Sale price¥25,800
Boulder opal 12.220ct loose
Sale price¥19,800
Boulder opal 15.020ct loose
Sale price¥29,800
Boulder opal 17.450ct loose
Sale price¥29,800
Boulder opal 41.770ct loose
Sale price¥39,800
Larimar 3.230ct loose
Sale price¥12,800
Larimar 3.280ct loose
Sale price¥12,800
Larimar 3.540ct loose
Sale price¥14,800
Larimar 3.450ct loose
Sale price¥12,800
Black opal 0.660ct loose
Sale price¥19,800
Opal 1.020ct loose
Sale price¥39,800
Colombian emerald 8.90ct rough stone
Sale price¥65,800
Colombian emerald 10.940ct rough stone
Sale price¥89,800
Andesine Labradorite (commonly known as Rainbow Moonstone) 1.220ct loose
Sale price¥19,800
Morganite 0.960ct loose (Asscher cut)
Sale price¥12,800
Pink opal 6.960ct loose
Sale price¥8,800
Pink opal 7.180ct loose
Sale price¥8,800
Yellow sapphire 0.554ct loose stone
Sale price¥6,980
Zircon 0.638ct loose stone
Sale price¥14,800
Zircon 0.654ct loose stone
Sale price¥9,800
Purple spinel 0.825ct loose stone
Sale price¥7,980
Cobalt Garnite 0.138ct loose (sugar loaf cut)
Sale price¥9,800
Cobalt Garnite 0.115ct loose (sugar loaf cut)
Sale price¥9,800
Colombian emerald cat's eye 0.061ct loose
Sale price¥12,800
Colombian emerald cat's eye 0.078ct loose
Sale price¥8,800
Colombian emerald cat's eye 0.079ct loose
Sale price¥11,800
Colombian emerald cat's eye 0.083ct loose
Sale price¥8,800
Colombian emerald cat's eye 0.108ct loose
Sale price¥12,800
Bicolor tourmaline 1.039ct loose
Sale price¥39,800
Dendritic quartz 4.480ct loose
Sale price¥4,980
Rose quartz 8.640ct loose
Sale price¥3,980
Zircon 1.020ct loose
Sale price¥5,980
Sunstone Scapolite 1.780ct loose
Sale price¥15,800
Brazilian Bicolor Tourmaline 4.554ct Ruth Japanese-German Edition
Sale price¥298,000
Purple spinel 0.870ct loose stone
Sale price¥9,800
Myanmar Purple Spinel 0.880ct Loose
Sale price¥8,800
Oligoclase Sunstone 26.660ct rough stone
Sale price¥19,800
Sphene 10.390ct loose
Sale price¥128,000
[Sakura Incut] Yellow Beryl 7mm Loose with Patch
Sale price¥39,800
Sphene 4.3mm/0.360ct loose
Sale price¥8,800
Sphane 4.3mm/0.275ct loose
Sale price¥7,980

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.