Oval Cut
Lavender quartz (scorolite) 1.130ct loose stone
Sale price¥6,980
Tanzanian Kornerupine 0.300ct Loose Stone
Sale price¥29,800
Tanzanian Kornerupine 0.210ct loose stone
Sale price¥18,800
Tanzanian Kornerupine 0.220ct loose stone
Sale price¥15,800
Tanzanian Kornerupine 0.229ct loose stone
Sale price¥25,800
Tanzanian Kornerupine 0.249ct loose stone
Sale price¥22,800
Tanzanian Kornerupine 0.201ct loose stone
Sale price¥25,800
Tanzanian Kornerupine 0.200ct Loose Stone
Sale price¥18,800
Sri Lankan Purple Spinel 1.638ct Loose Stone, Japan-Germany Exchange
Sale price¥69,800
Mozambique Pink Sapphire 0.377ct Loose (Hot Pink Sapphire)
Sale price¥15,800
Tibetan bicolor andesine 2.657ct loose stone
Sale price¥25,800
Vietnam unheated silky pink sapphire 0.580ct loose stone
Sale price¥18,800
German Awinite 0.070ct loose stone
Sale price¥32,800
Colombian emerald 0.512ct loose stone (silky type)
Sale price¥14,800
Brazilian Romanesite in Quartz 2.914ct loose stone
Sale price¥9,800
Brazilian Flower Quartz 4.666ct Loose Stone
Sale price¥12,800
Brazilian Flower Quartz 6.928ct Loose Stone
Sale price¥17,800
Brazilian Flower Quartz 6.004ct Loose Stone
Sale price¥15,800
Brazilian Flower Quartz 7.144ct Loose Stone
Sale price¥17,800
Brazilian Flower Quartz 6.501ct Loose Stone
Sale price¥16,800
Brazilian Flower Quartz 6.582ct Loose Stone
Sale price¥16,800
Tanzanian Chrome Tourmaline 0.988ct Loose Stone
Sale price¥6,980
Tanzanian Chrome Tourmaline 0.772ct Loose Stone
Sale price¥6,980
Tanzanian Chrome Tourmaline 0.798ct Loose Stone
Sale price¥6,980
Tanzanian Chrome Tourmaline 0.546ct Loose Stone
Sale price¥4,980
Tanzanian Chrome Tourmaline 0.522ct Loose Stone
Sale price¥5,980
Tanzanian Chrome Tourmaline 0.859ct Loose Stone
Sale price¥8,800
Brazilian Alexandrite 0.066ct loose stone
Sale price¥12,800
Chrysoberyl cat's eye 1.088ct loose stone
Sale price¥8,800
Cristobalite in Quartz 2.417ct Loose Stone
Sale price¥12,800
Cristobalite in Quartz 1.660ct Loose
Sale price¥9,800
Sri Lankan Star Sapphire 2.093ct Loose
Sale price¥9,800
Australian Opal 1.170ct Loose
Sale price¥18,800
Australian black opal 0.232ct loose stone
Sale price¥8,800
Australian black opal 1.107ct loose stone
Sale price¥35,800
Australian black opal 0.977ct loose stone
Sale price¥29,800
Australian black opal 0.407ct loose stone
Sale price¥8,800
Australian black opal 0.410ct loose stone
Sale price¥15,800
Australian black opal 0.294ct loose
Sale price¥8,800
Ruby 0.289ct loose stone by Takakikyo
Sale price¥12,800
Pigeon Blood Ruby 0.295ct Loose AIGS
Sale price¥49,800
Colombian oil-free emerald 0.310ct loose stone
Sale price¥298,000
Brazilian alexandrite 0.061ct loose
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.
業界発展のための後進育成や事業協力、宝石の国スリランカの子どもたちへの支援活動など、KARATZの取り組みについてご紹介いたします。
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.