Montana Sapphire 0.515ct loose (bicolor sapphire)
Sale price¥15,800
Aquamarine in quartz 18.954ct rough stone
Sale price¥18,800
Rutilated Quartz (Rutilated Quartz) 9.721ct Loose (Sun Rutilated Quartz)
Sale price¥25,800
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
Madagascar Blue Sapphire 0.347ct Loose Stone with Appraisal Report
Sale price¥25,800
Tanzanite from Tanzania 0.416ct loose stone
Sale price¥12,800
Oregon Sunstone from the United States, 6.1mm/0.820ct loose stone
Sale price¥16,800
Brazilian Dendritic Quartz 8.598ct Loose Stone
Sale price¥19,800
Brazilian Dendritic Quartz 6.059ct Loose Stone (Rainbow)
Sale price¥15,800
Indian Black Moonstone 1.871ct Loose Gemstone
Sale price¥12,800
Mozambican Almandine Garnet 1.363ct Loose Stone
Sale price¥12,800
Brazilian Lazulite 0.035ct Loose Stone with Certificate
Sale price¥24,800
Nigerian Cobalt Garnet 0.095ct Loose with Certificate
Sale price¥18,800
[Rouge Cut] Mexican Fire Opal 1.458ct Loose Stone
Sale price¥18,800
Mexican bicolor Danburite 1.932ct loose stone by Nikkei
Sale price¥29,800
Brazilian Medusa Quartz (Paraiba Quartz) 2.484ct loose stone
Sale price¥29,800
Bicolor Tourmaline 0.649ct Loose Stone, Japan-Germany
Sale price¥12,800
Brazilian Dendritic Quartz 4.182ct Loose Stone
Sale price¥12,800
Synthetic Alexandrite 4.3mm/0.430ct Loose Stone
Sale price¥12,800
Synthetic rutile 5.1mm/0.877ct loose stone
Sale price¥12,800
Brazilian Medusa Quartz (Paraiba Quartz) 2.524ct loose
Sale price¥29,800
Australian Rainbow Lattice Sunstone 3.504ct Loose Stone
Sale price¥29,800
Australian Black Opal 0.768ct Loose
Sale price¥25,800
Australian Black Opal 0.754ct Loose
Sale price¥22,800
Australian Black Opal 1.539ct Loose
Sale price¥15,800
Australian Black Opal 0.940ct Loose
Sale price¥18,800
Australian Black Opal 0.754ct Loose
Sale price¥22,800
Australian Black Opal 0.605ct Loose Stone
Sale price¥22,800
Australian Black Opal 0.387ct Loose
Sale price¥18,800
Australian black opal 1.311 ct loose stone
Sale price¥18,800
Australian black opal loose stone, 0.618ct
Sale price¥15,800
Australian Black Opal 0.744ct Loose Gemstone
Sale price¥18,800
Australian Black Opal 0.548ct Loose
Sale price¥18,800
Australian Black Opal 0.415ct Loose
Sale price¥18,800
Australian black opal, 0.336ct loose stone
Sale price¥19,800
Australian black opal, 0.666ct loose
Sale price¥12,800
[On sale May 13 at 10 PM] Australian Black Opal 0.525ct Loose Stone
Sale price¥12,800
[On sale 10 PM on May 6] Australian Black Opal 0.509ct Loose Stone
Sale price¥14,800
[On Sale May 3, 10 PM JST] Australian Black Opal 0.385ct Loose Gemstone
Sale price¥18,800
Australian Black Opal 0.362ct Loose
Sale price¥18,800
Australian Black Opal 1.705ct Loose
Sale price¥12,800
[On sale May 3, 10 PM JST] Australian Black Opal 0.667ct Loose Stone
Sale price¥12,800
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.