Birthstone list
Australian boulder opal 6.980ct loose
Sale price¥7,980
Sri Lankan Goethite Into Topaz 3.200ct loose
Sale price¥7,980
Tanzanite 1.593ct loose
Sale price¥15,800
Tanzanite 1.297ct loose
Sale price¥12,960
Purple Diamond 0.070ct Loose (FANCY VIVID PINK PURPLE, I-1)
Sale price¥188,000
Sri Lankan star sapphire 21.730ct loose
Sale price¥69,800
Labradorite Moonstone 1.598ct Loose Stone Japanese-German
Sale price¥9,800
Brazilian Paraiba tourmaline in quartz 2.954ct loose
Sale price¥45,800
Australian boulder opal 4.470ct loose
Sale price¥29,800
Yellow opal 17.283ct loose
Sale price¥34,800
White topaz 16.06ct loose
Sale price¥29,800
Bicolor grossular garnet 0.782ct loose
Sale price¥16,800
Paraiba tourmaline from Brazil 0.34ct loose GIA
Sale price¥59,800
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
Mexican Fire Opal 4.5mm/0.244ct Loose
Sale price¥12,800
Diamond 0.052ct loose (trapeze cut, VS class equivalent)
Sale price¥8,800
Paraiba tourmaline from Mozambique 0.215ct loose
Sale price¥12,800
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
[Rouge cut] Almandine garnet 2.090ct loose
Sale price¥12,800
[Rouge cut] Almandine garnet 2.076ct loose
Sale price¥12,800
[Camellia cut] Opal 14mm/5.283ct loose with patch
Sale price¥98,000
Australian opal 0.286ct loose
Sale price¥6,980
Pink tourmaline 0.394ct loose
Sale price¥8,800
Pink sapphire 0.225ct loose
Sale price¥6,980
Rhodolite garnet 0.990ct loose
Sale price¥5,980
Amazon green opal 1.120ct loose
Sale price¥5,980
YAG (Yttrium Aluminum Garnet) 7mm/1.775ct Loose Stone
Sale price¥12,800
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 0.596ct loose
Sale price¥29,800
Paraiba tourmaline from Mozambique 0.273ct loose
Sale price¥18,800
Paraiba tourmaline from Mozambique 0.228ct loose
Sale price¥12,800
Paraiba Tourmaline from Mozambique 2.037ct loose stone with gem analysis
Sale price¥598,000
Australian boulder opal 3.695ct loose
Sale price¥15,800
Sri Lankan star sapphire 1.487ct loose
Sale price¥12,800
Unheated Ruby from Myanmar 0.433ct Ruth Japanese-German Edition
Sale price¥59,800
Australian boulder opal 2.470ct loose
Sale price¥8,800
Australian boulder opal 4.729ct loose
Sale price¥19,800
Aventurine Aquamarine Cat's Eye 1.567ct Loose
Sale price¥5,980
Bicolor tanzanite 0.479ct loose
Sale price¥24,800
Russian demantoid garnet (horsetail recognized) 5.2mm/0.702ct loose
Sale price¥228,000
Pink tourmaline 0.516ct loose
Sale price¥6,980
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.
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.