Brazilian Medusa Quartz (Paraiba Quartz) 2.484ct loose stone
Sale price¥29,800
Dioptase from Namibia 0.150ct loose Japanese-German book
Sale price¥49,800
Blue Tourmaline 1.460ct Loose Stone Japan-Germany Exchange
Sale price¥39,800
Bicolor Tourmaline 0.649ct Loose Stone, Japan-Germany
Sale price¥12,800
Unheated Bicolor Paraiba Tourmaline 0.092ct Loose GIA
Sale price¥188,000
South African rhodochrosite 2.477ct loose Japanese-German edition
Sale price¥398,000
18K Yellow Gold Ruby Ring (Pigeon Blood Color)
Sale price¥128,000
18K Yellow Gold Colombian Emerald Ring
Sale price¥128,000
Tanzanite from Tanzania 0.416ct loose stone
Sale price¥12,800
Brazilian Dendritic Quartz 4.182ct Loose Stone
Sale price¥12,800
Brazilian Dendritic Quartz 6.059ct Loose Stone (Rainbow)
Sale price¥15,800
Brazilian Dendritic Quartz 8.598ct Loose Stone
Sale price¥19,800
Madagascar Blue Sapphire 0.347ct Loose Stone with Appraisal Report
Sale price¥25,800
Brazilian Sky Blue Topaz 0.746ct Loose Stone
Sale price¥8,800
Synthetic Alexandrite 4.3mm/0.430ct Loose Stone
Sale price¥12,800
Brazilian Paraiba tourmaline in quartz 1.602ct loose
Sale price¥39,800
Australian shell opal 53.277ct rough stone
Sale price¥59,800
Unheated Pigeon Blood Ruby 0.380ct Loose Stone AIGS
Sale price¥79,800
Congo hemimorphite 3.510ct loose stone
Sale price¥18,800
Synthetic rutile 5.1mm/0.877ct loose stone
Sale price¥12,800
Bicolor Paraiba tourmaline 2.477ct loose DGL version
Sale price¥298,000
Cornelpine from Tanzania 0.331ct loose
Sale price¥22,800
Congo hemimorphite 4.009ct loose stone
Sale price¥22,800
Australian Rainbow Lattice Sunstone 2.188ct Loose
Sale price¥22,800
Mozambique Almandine Garnet 6.7mm/1.228ct Loose Stone
Sale price¥9,800
Mexican Fire Opal 0.459ct Loose
Sale price¥18,800
Colombian emerald 0.155ct loose stone
Sale price¥29,800
0.175ct loose hot pink sapphire from Mozambique
Sale price¥15,800
YAG (Yttrium Aluminum Garnet) 0.598ct loose stone
Sale price¥9,800
Zimbabwean Bicolor Euclase 0.227ct Loose Stone
Sale price¥49,800
Tanzanian Bicolor Zoisite 0.312ct Loose Stone
Sale price¥12,800
Sri Lankan Blue Sapphire (Ice Blue) 0.272ct Loose
Sale price¥12,800
Tanzanian Bekiri Blue Garnet (Color Change Garnet) 0.102ct Loose Stone
Sale price¥12,800
Brazilian Dumortierite in Quartz 0.699ct Loose Stone
Sale price¥6,980
Brazilian Dumortierite in Quartz 0.910ct Loose Stone
Sale price¥9,800
American Peridot 0.770ct Loose Stone
Sale price¥12,800
Zimbabwean Apatite (UV Type) 0.703ct Loose Stone
Sale price¥7,980
Oregon Sunstone from the United States, 5.0mm/0.520ct loose stone
Sale price¥15,800
Brazilian Blue Tourmaline 0.819ct Loose Stone
Sale price¥31,800
Oregon Sunstone from the United States, 6.1mm/0.820ct loose stone
Sale price¥16,800
Brazilian Medusa Quartz (Paraiba Quartz) 2.524ct loose
Sale price¥29,800
Rutilated Quartz (Rutile Quartz) 7.440ct Loose (Sun Rutilated Quartz)
Sale price¥18,800
Brazilian Medusa Quartz (Paraiba Quartz) 1.317ct loose
Sale price¥18,800
Rutilated Quartz (Rutilated Quartz) 9.721ct Loose (Sun Rutilated Quartz)
Sale price¥25,800
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.