Red beryl 0.104ct loose
Sale price¥34,800
Red beryl 0.120ct loose
Sale price¥36,800
Oregon Sunstone 0.264ct loose
Sale price¥3,980
White topaz 16.06ct loose
Sale price¥29,800
Colombian emerald 0.135ct loose
Sale price¥18,800
Paraiba tourmaline from Brazil 0.34ct loose GIA
Sale price¥59,800
Dioptase from Namibia 3.1mm/0.132ct loose Japanese-German edition
Sale price¥69,800
Paraiba tourmaline from Mozambique 0.256ct loose
Sale price¥18,800
Paraiba tourmaline from Mozambique 0.207ct loose
Sale price¥12,800
Indigolite tourmaline 0.260ct loose Japanese-German book
Sale price¥18,800
Paraiba tourmaline from Mozambique 0.215ct loose
Sale price¥12,800
Paraiba tourmaline from Mozambique 0.257ct loose
Sale price¥12,800
Paraiba tourmaline from Mozambique 0.274ct loose
Sale price¥15,800
Zircon 0.416ct loose
Sale price¥4,980
Zircon 0.194ct loose
Sale price¥2,980
Colombian emerald cat's eye 0.110ct loose
Sale price¥12,800
Brazilian Paraiba tourmaline 0.420ct raw stone (CuO:1.6%, MnO:1.3%)
Sale price¥98,000
Spinel 0.330ct loose
Sale price¥6,980
Paraiba tourmaline from Mozambique 0.229ct loose
Sale price¥12,800
Australian opal 0.286ct loose
Sale price¥6,980
Demantoid garnet from Madagascar 3.9mm/0.291ct loose
Sale price¥39,800
Pink tourmaline 0.394ct loose
Sale price¥8,800
Blue zircon 0.397ct loose stone
Sale price¥7,980
Blue zircon 0.322ct loose stone
Sale price¥6,980
Strontium titanate 4.2mm/0.410ct loose stone
Sale price¥12,800
Dioptase from Namibia 0.229ct loose Japanese-German book
Sale price¥79,800
Paraiba tourmaline from Mozambique 0.388ct loose
Sale price¥24,800
Paraiba tourmaline from Mozambique 0.272ct loose
Sale price¥15,800
Paraiba tourmaline from Mozambique 0.273ct loose
Sale price¥18,800
Paraiba tourmaline from Mozambique 0.228ct loose
Sale price¥12,800
Pink spinel 0.409ct loose
Sale price¥8,800
Unheated Ruby from Myanmar 0.433ct Ruth Japanese-German Edition
Sale price¥59,800
Unheated silky pink sapphire from Vietnam 0.282ct loose
Sale price¥7,980
Bicolor tanzanite 0.479ct loose
Sale price¥24,800
Bicolor tanzanite 0.345ct loose
Sale price¥19,800
Dioptase from Namibia 3.3mm/0.162ct loose Japanese-German edition
Sale price¥98,000
Pink tourmaline 4.0mm/0.300ct loose stone
Sale price¥6,980
Pink sapphire from Mozambique 0.213ct loose (hot pink sapphire)
Sale price¥14,800
Paraiba tourmaline from Mozambique 0.243ct loose
Sale price¥19,800
Unheated silky pink sapphire from Vietnam 0.426ct loose
Sale price¥18,800
Unheated silky pink sapphire from Vietnam 0.423ct loose
Sale price¥22,800
Unheated silky pink sapphire from Vietnam 0.381ct loose
Sale price¥19,800
Unheated silky pink sapphire from Vietnam 0.376ct loose
Sale price¥14,800
Baddeleyite from Myanmar 0.279ct Ruth Japanese German edition
Sale price¥15,800
Brazilian Lazurite 0.200ct Ruth Japanese-German Edition
Sale price¥88,800
Montana Sapphire 3mm/0.155ct loose
Sale price¥23,800
Myanmar trapichel ruby 0.179ct rough stone
Sale price¥3,980

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.