Birthstone list
Madagascar sapphire 0.564ct loose stone
Sale price¥12,800
Brazilian bicolor tourmaline 0.837ct loose stone
Sale price¥15,800
Brazilian bicolor tourmaline 0.545ct loose stone (rose cut)
Sale price¥5,980
Brazilian bicolor tourmaline 0.549ct loose stone (rose cut)
Sale price¥8,800
South African diamond rough (sawable) 0.112ct rough
Sale price¥44,800
South African diamond rough (sawable) 0.091ct rough (trigon)
Sale price¥35,800
0.075 ct Loose Paraiba Tourmaline from Brazil (CuO: 1.7%, MnO: 1.9%)
Sale price¥45,800
Bekily Blue Garnet from Madagascar (color change garnet) 0.119ct loose
Sale price¥12,800
Colombian pyrite in emerald 15.291ct loose
Sale price¥1,000,000
Brazilian Paraiba Tourmaline in Quartz 1.171ct Loose Stone
Sale price¥18,800
Brazilian Paraiba Tourmaline in Quartz 1.674ct loose stone
Sale price¥19,800
Brazilian copper rutilated quartz 6.8mm/1.206ct loose stone
Sale price¥8,800
YAG (Yttrium Aluminum Garnet) 4.5mm/0.440ct loose stone
Sale price¥8,800
YAG (Yttrium Aluminum Garnet) 4.8mm/0.538ct loose stone
Sale price¥8,800
YAG (Yttrium Aluminum Garnet) 4.1mm/0.322ct loose stone
Sale price¥8,800
Sri Lankan Yellow Sapphire 0.282ct Loose
Sale price¥12,800
Tanzania Peristallite 6.0mm/0.531ct Loose Stone (Blue Moonstone)
Sale price¥9,800
Tanzania Peristerite 1.592ct Loose Stone (Blue Moonstone)
Sale price¥14,800
Brazilian pink tourmaline 1.018ct loose stone
Sale price¥29,800
Yellow Diamond (Cabochon Cut) 0.185ct Loose
Sale price¥25,800
Brazilian Paraiba Tourmaline in Quartz 0.556ct Loose Stone
Sale price¥15,800
Colombian emerald rough stone 37.764ct (Gachala mine)
Sale price¥598,000
Brazilian bicolor tourmaline 0.502ct loose stone
Sale price¥9,800
Brazilian Limonite in Topaz 20.777ct loose stone
Sale price¥39,800
Myanmar spinel and Tanzanite 7 stone set ring (Alterno setting)
Sale price¥98,000
Russian Demantoid Garnet (Horsetail) 3.5mm/0.187ct Loose Stone
Sale price¥45,800
Russian Demantoid Garnet (Horsetail certified) 2.4mm/0.066ct loose stone
Sale price¥12,800
Brazilian Pink Tourmaline 0.331ct Loose Stone
Sale price¥8,800
Colombian Trapiche Emerald 0.923ct Rough Stone
Sale price¥45,800
Tanzanian bicolor tanzanite 4.804ct rough stone
Sale price¥18,800
Diamond 3.8mm/0.209 Loose (G, VVS1, 3Excellent H&C)
Sale price¥59,800
Brazilian Limonite in Topaz 8.994ct loose stone
Sale price¥19,800
Ethiopian Opal 41.967ct Rough Stone
Sale price¥33,800
Ethiopian Opal 15.845ct Rough Stone
Sale price¥15,800
Ethiopian Opal 14.344ct Rough Stone
Sale price¥14,800
Brazilian Paraiba Tourmaline in Quartz 8.0mm/1.199ct Loose Stone
Sale price¥25,800
Brazilian Paraiba Tourmaline in Quartz 0.946ct Loose Stone
Sale price¥15,800
Brazilian Paraiba Tourmaline in Quartz 0.620ct Loose Stone
Sale price¥25,800
Brazilian Paraiba Tourmaline in Quartz 0.866ct Loose Stone
Sale price¥17,800
Brazilian Paraiba Tourmaline in Quartz 0.812ct Loose Stone
Sale price¥15,800
Madagascar sapphire 0.153ct loose stone
Sale price¥6,980
Madagascar sapphire 0.157ct loose stone
Sale price¥6,980
Silky pink sapphire from Madagascar 0.445ct 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.