Red beryl 0.120ct loose
Sale price¥36,800
White topaz 16.06ct loose
Sale price¥29,800
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
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
Paraiba tourmaline from Mozambique 0.229ct loose
Sale price¥12,800
Australian opal 0.286ct loose
Sale price¥6,980
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
Bicolor tanzanite 0.479ct loose
Sale price¥24,800
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
Baddeleyite from Myanmar 0.279ct Ruth Japanese German edition
Sale price¥15,800
Montana Sapphire 3mm/0.155ct loose
Sale price¥23,800
Myanmar trapichel ruby 0.179ct rough stone
Sale price¥3,980
Myanmar trapichel ruby 0.160ct rough stone
Sale price¥5,980
Myanmar trapichel ruby 0.152ct rough stone
Sale price¥4,980
Trapichel ruby from Myanmar 0.202ct rough stone
Sale price¥3,980
Myanmar trapichel ruby 0.261ct rough stone
Sale price¥4,980
Mexican Fire Opal 4.2mm/0.182ct Loose
Sale price¥8,800
Blue tourmaline from Afghanistan 4.5mm/0.326ct loose
Sale price¥8,800
Sapphire from Madagascar 4.5mm/0.414ct loose
Sale price¥16,800
Sapphire from Madagascar 4.3mm/0.398ct loose
Sale price¥15,800
Hot Pink Spinel 0.203ct Loose (Mahenge Spinel)
Sale price¥12,800
Pink sapphire from Mozambique 0.213ct loose (hot pink sapphire)
Sale price¥14,800
Colombian trapiche emerald (reverse trapiche) 0.152ct loose
Sale price¥15,800
Colombian trapiche emerald (reverse trapiche) 0.113ct loose
Sale price¥14,800
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.
So that more people can feel closer to jewellery and enjoy it easily.
We will introduce KARATZ's thoughts on products, the attention to detail and efforts in selecting gemstones and creating jewelry.
KARATZ's Initiatives and Social Contributions
We will introduce KARATZ's efforts, including nurturing the next generation and business collaboration to develop the industry, and supporting children in Sri Lanka, the land of jewels.
KARATZ Books
These are books that KARATZ has been involved in writing, supervising, and planning. They are all books that allow you to enjoy gemstones from various angles. You can also purchase them directly.
jeweler's tools
For those who want to enjoy jewelry more but don't know what tools to use, we will introduce tools that are also used by KARATZ staff. You can also purchase them directly.