October birthstone
October's birthstone is opal tourmaline .
Opal is known for its play-of-color effect, which shows an aurora-like glow of seven colors on its surface, but some types do not show this play-of-color effect. Not only are there many types, but each one has a different play of color, so I think it's perfect for those who like unique gemstones.
Tourmaline is a gemstone with so many color variations that it is said that there is no other color. Some are called by different names depending on their color, such as Paraiba tourmaline and rubellite . Some stones have multiple colors in one stone, and others look like watermelons, so I think it's fun to collect a variety of stones and enjoy the different colors.
Karatz GemMagazine
" List of October birthstones and birthstones "
Paraiba tourmaline from Brazil 0.054ct loose (CuO:1.2%, MnO:3.1%)
Sale price¥15,800
Paraiba tourmaline from Brazil 0.353ct loose (CuO:0.8%, Mn:3.4%)
Sale price¥39,800
Opal 6.560ct loose
Sale price¥39,800
[Posted 12533051] Cantera Opal 8.970ct Loose
Sale price¥12,800
Cantera Opal 5.750ct loose
Sale price¥18,800
Tourmaline 0.360ct loose stone
Sale price¥2,980
[12532439 published] Hokkaido UV opal 11.900ct loose with patch
Sale price¥8,800
Green tourmaline cat's eye 6.480ct loose
Sale price¥8,800
Tourmaline cat's eye 4.790ct loose
Sale price¥6,980
Tourmaline cat's eye 4.590ct loose
Sale price¥12,800
Opal 1.020ct loose
Sale price¥29,800
Bicolor tourmaline 0.880ct loose
Sale price¥8,800
Bicolor tourmaline 1.220ct loose
Sale price¥15,800
[On Sale at 10 PM on August 17th] Mexican Cantera Opal 2.125ct Loose
Sale price¥39,800
[On Sale at 10 PM on August 16th] Mexican Cantera Opal 5.882ct Loose
Sale price¥39,800
Yellow tourmaline 2.290ct loose
Sale price¥8,800
Australian boulder opal 13.190ct loose
Sale price¥18,800
Paraiba tourmaline from Brazil 0.055ct loose (CuO:1.5%,MnO:3.2%)
Sale price¥39,800
Paraiba tourmaline from Brazil 0.066ct loose (CuO:1.7%,Mn0:2.1%)
Sale price¥29,800
Green opal 15.950ct loose
Sale price¥29,800
Green tourmaline 9.537ct loose
Sale price¥98,000
Cantera opal 14.581ct loose
Sale price¥22,800
Paraiba tourmaline from Brazil 0.252ct loose (CuO:0.9%, MnO:2.0%)
Sale price¥29,800
Opal 21.584ct loose Japanese and German
Sale price¥8,800
Paraiba tourmaline from Brazil 0.265ct loose (CuO:0.7%, MnO:3.0%)
Sale price¥29,800
Pink tourmaline cat's eye 5.460ct loose
Sale price¥8,800
Bicolor tourmaline 6.40ct loose
Sale price¥7,980
Brazilian Paraiba tourmaline 0.229ct loose (CuO:0.8%, MnO:2.2%)
Sale price¥39,800
Mexican cantera opal 34.760ct loose
Sale price¥39,800
Black opal 2.293ct loose
Sale price¥98,000
Brazilian Paraiba tourmaline 96.184ct raw stone
Sale price¥8,800
[Posted 12540116] Ethiopian opal 136.601ct rough stone
Sale price¥29,800
Pink tourmaline 0.841ct loose stone
Sale price¥8,800
Mexican Hyalite Opal 1.587ct Loose
Sale price¥9,800
Mexican Cantera Opal 4.456ct Loose
Sale price¥39,800
Opal 426.985ct rough stone
Sale price¥29,800
Mexican cantera opal 8.454ct loose
Sale price¥3,980
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 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.