Madagascar Purple Sapphire 0.433ct Loose Stone
Sale price¥14,800
Sri Lankan purple spinel 0.864ct loose stone
Sale price¥29,800
Myanmar spinel 0.402ct loose stone
Sale price¥12,800
Myanmar spinel 4.0mm/0.263ct loose stone
Sale price¥7,980
Color shift amethyst 4.191ct loose stone
Sale price¥14,800
Color shift amethyst 1.216ct loose stone
Sale price¥8,800
Hackmanite from Afghanistan, 15.600ct rough stone
Sale price¥8,800
Myanmar Purple Spinel 0.434ct Loose Stone
Sale price¥12,800
Tanzanite from Tanzania 1.522ct loose stone
Sale price¥55,800
Tanzanite from Tanzania 0.804ct loose stone
Sale price¥24,800
Tanzanite from Tanzania 0.856ct loose stone
Sale price¥29,800
Mozambique Rubellite 1.706ct Loose Stone
Sale price¥39,800
Tanzanite 0.482ct loose stone (princess cut) from Tanzania
Sale price¥18,800
Tanzanite from Tanzania 1.140ct loose stone
Sale price¥39,800
[Koshu Precious Stones plusthree] Amethyst 4.306ct Loose Stone Patch
Sale price¥25,800
Tanzanite from Tanzania 6.5mm/0.945ct loose stone
Sale price¥28,800
Tanzanite from Tanzania 1.577ct loose stone
Sale price¥49,800
Tanzanite from Tanzania 1.162ct loose stone
Sale price¥39,800
Tanzanite from Tanzania 0.767ct loose stone
Sale price¥29,800
Tanzanite from Tanzania 1.243ct loose stone
Sale price¥45,800
Tanzanite from Tanzania 0.567ct loose stone
Sale price¥14,800
Tanzanite from Tanzania 2.011ct loose stone
Sale price¥65,800
Fluorite rough stone from Yaogangshan, China, 72.518ct
Sale price¥9,800
South African Sugilite 1.330ct loose stone
Sale price¥22,800
Tanzania Color Change Garnet 0.789ct Loose Stone
Sale price¥9,800
Tanzanite from Tanzania 1.250ct loose stone
Sale price¥22,800
Purple sapphire 4mm/0.273ct loose stone
Sale price¥12,800
Sri Lankan Star Sapphire 5.225ct Loose
Sale price¥98,000
Afghanistan Hackmanite 0.115ct loose stone
Sale price¥8,800
Tanzanite from Tanzania 0.491ct loose stone
Sale price¥8,800
Tanzanite from Tanzania 0.466ct loose stone
Sale price¥8,800
Purple zoisite from Tanzania 1.103ct loose Japanese German edition
Sale price¥98,000
[Sakura Incut] Purple Spinel 5.5mm/0.609ct {Collaboration} Loose Patch
Sale price¥55,800
Purple spinel 0.955ct loose stone
Sale price¥19,800
Tanzanian Lavender Tanzanite 0.498ct Loose Stone
Sale price¥14,800
Tanzanian Lavender Tanzanite 0.382ct Loose Stone
Sale price¥12,800
Tanzanian Lavender Tanzanite 0.558ct Loose Stone
Sale price¥12,800
Tanzanian bicolor tanzanite 0.573ct loose stone
Sale price¥15,800
Tanzanian Lavender Tanzanite 0.577ct Loose Stone
Sale price¥15,800
Tanzanite from Tanzania 0.245ct loose stone
Sale price¥9,800
Tanzania Bicolor Zoisite 0.295ct Loose Stone
Sale price¥8,800
Tanzanite from Tanzania 0.385ct loose stone
Sale price¥9,800
Tanzania Bicolor Zoisite 0.286ct Loose Stone
Sale price¥8,800
Tanzanian Rhodolite Garnet 0.810ct Loose Stone
Sale price¥9,800
Tanzanite 0.760ct loose stone (sugarloaf cut)
Sale price¥9,800
Bolivian Ametrine 36.887ct loose stone
Sale price¥98,000

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.