Birthstone list
Sri Lankan star sapphire 1.061ct loose
Sale price¥8,800
Sri Lankan star sapphire 1.323ct loose
Sale price¥6,980
Rough diamond (makeable) 0.345ct loose (VS-SI equivalent)
Sale price¥34,800
Rough diamond (makeable) 0.185ct loose (VS-SI)
Sale price¥22,800
Brazilian bicolor tourmaline 0.877ct loose
Sale price¥15,800
Brazilian bicolor tourmaline 1.056ct loose
Sale price¥15,800
Brazilian bicolor tourmaline 1.148ct loose
Sale price¥18,800
Brazilian bicolor tourmaline 1.565ct loose
Sale price¥22,800
Brazilian bicolor tourmaline 1.764ct loose
Sale price¥35,800
Brazilian bicolor tourmaline 1.564ct loose
Sale price¥19,800
Ethiopian Opal 6mm/0.952ct Loose (Sphere)
Sale price¥8,800
Bicolor tourmaline 0.397ct loose
Sale price¥8,800
Ice blue sapphire from Madagascar 0.181ct loose
Sale price¥7,980
Yellow sapphire from Madagascar 0.181ct loose
Sale price¥5,980
Green sapphire from Madagascar 0.199ct loose
Sale price¥7,980
Madagascar sapphire 0.205ct loose
Sale price¥9,800
Yellow sapphire from Madagascar 0.207ct loose
Sale price¥7,980
Yellow sapphire from Madagascar 0.232ct loose
Sale price¥7,980
Brazilian imperial topaz 3.287ct loose
Sale price¥18,800
Pink tourmaline (rose cut) 0.512ct loose
Sale price¥8,800
Sri Lankan star sapphire 2.094ct loose
Sale price¥16,800
Brazilian bicolor tourmaline 1.698ct loose
Sale price¥22,800
Diamond 0.039ct loose (trapeze cut, equivalent to VS class)
Sale price¥7,980
Diamond 0.042ct loose (trapeze cut, VS class equivalent)
Sale price¥8,800
Diamond 0.061ct loose (trapeze cut, VS class equivalent)
Sale price¥9,800
Colombian trapiche emerald (reverse trapiche) 0.093ct loose
Sale price¥9,800
Colombian trapiche emerald (reverse trapiche) 0.188ct loose
Sale price¥18,800
Colombian trapiche emerald (reverse trapiche) 0.170ct loose
Sale price¥15,800
Brazilian bicolor tourmaline 2.047ct loose
Sale price¥29,800
Wood opal 24.319ct loose
Sale price¥59,800
Brazilian bicolor tourmaline 4.782ct loose
Sale price¥55,800
Colombian trapiche emerald (reverse trapiche) 0.094ct loose
Sale price¥12,800
Colombian trapiche emerald (reverse trapiche) 0.053ct loose
Sale price¥8,800
Colombian trapiche emerald (reverse trapiche) 0.144ct loose
Sale price¥18,800
Colombian trapiche emerald (reverse trapiche) 0.084ct loose
Sale price¥9,800
Colombian trapiche emerald (reverse trapiche) 0.108ct loose
Sale price¥13,800
Colombian trapiche emerald (reverse trapiche) 0.074ct loose
Sale price¥11,000
Colombian trapiche emerald (reverse trapiche) 0.099ct loose
Sale price¥11,800
Colombian trapiche emerald (reverse trapiche) 0.196ct loose
Sale price¥22,800
Colombian trapiche emerald (reverse trapiche) 0.113ct loose
Sale price¥14,800
Colombian trapiche emerald (reverse trapiche) 0.152ct loose
Sale price¥15,800
Colombian trapiche emerald (reverse trapiche) 0.095ct loose
Sale price¥8,800
Colombian trapiche emerald (reverse trapiche) 0.072ct loose
Sale price¥8,800
Pink diamond 2.2mm/0.044ct loose (FANCY PURPLE PINK, I-1)
Sale price¥39,800
Pink sapphire from Mozambique 0.213ct loose (hot pink sapphire)
Sale price¥14,800
Sapphire from Madagascar 4.3mm/0.398ct loose
Sale price¥15,800
Sapphire from Madagascar 4.5mm/0.414ct loose
Sale price¥16,800
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.