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 "
[12552618] Unheated Brazilian Paraiba Tourmaline 0.063ct loose stone
Sale price¥49,800
[Posted in 12548907] Yellow tourmaline 0.469ct loose
Sale price¥8,800
[Posted in 12547848] Green tourmaline 0.869ct loose
Sale price¥15,800
Australian boulder opal 0.874ct loose
Sale price¥3,980
Australian boulder opal 1.156ct loose
Sale price¥3,980
Australian boulder opal 1.173ct loose
Sale price¥5,980
Mexican Cantera Opal 14.690ct Loose
Sale price¥12,800
Mexican Cantera Opal 1.120ct Loose
Sale price¥8,800
[Rouge Cut] Brazilian Bicolor Tourmaline 0.578ct Loose
Sale price¥9,800
Brazilian Rubellite 4.078ct Loose Stone
Sale price¥98,000
Australian boulder opal 1.868ct loose
Sale price¥18,800
Australian boulder opal 1.675ct loose
Sale price¥14,800
Australian boulder opal 28.880ct loose
Sale price¥59,800
Brazilian Paraiba tourmaline 0.275ct loose (CuO:1.5%.MnO:2.3%)
Sale price¥398,000
Brazilian Paraiba Tourmaline 0.039ct Loose Stone (CuO: 2.0%, MnO: 2.3%)
Sale price¥45,800
Australian boulder opal 9.120ct loose
Sale price¥98,000
Australian opal 14.837ct loose
Sale price¥98,000
Mexican Fire Opal 1.580ct Loose
Sale price¥25,800
Brazilian Indicolite Tourmaline 4.0mm/0.240ct Loose Stone with Appraisal
Sale price¥29,800
Brazilian Indigolite Tourmaline 0.609ct Loose Stone JTL
Sale price¥25,800
Paraiba tourmaline from Mozambique 0.154ct loose stone
Sale price¥19,800
Fire Opal 2 Stone Pair 4mm/0.336ct Loose
Sale price¥3,980
Particolor tourmaline 24.147ct loose
Sale price¥49,800
Paraiba tourmaline from Mozambique, 3.5mm/0.172ct loose stone
Sale price¥15,800
Paraiba tourmaline from Mozambique, 3.2mm/0.119ct loose stone
Sale price¥9,800
Brazilian pink tourmaline 0.234ct loose stone
Sale price¥8,800
Congo Pink Tourmaline 6.0mm/0.825ct Loose Stone
Sale price¥29,800
Congo Pink Tourmaline 5.9mm/0.798ct Loose Stone
Sale price¥25,800
Congo Pink Tourmaline 5.0mm/0.463ct Loose Stone
Sale price¥24,800
Brazilian mint color tourmaline 0.145ct loose stone
Sale price¥8,800
Brazilian green tourmaline 0.194ct loose stone
Sale price¥12,800
Brazilian green tourmaline 0.755ct loose stone
Sale price¥18,800
Illusion Tourmaline (Iridescent Tourmaline) 1.356ct Loose Stone
Sale price¥39,800
Brazilian Paraiba tourmaline 0.455ct raw stone (CuO: 0.9%, MnO: 2.2%)
Sale price¥15,800
[Posted 12533051] Cantera Opal 8.970ct Loose
Sale price¥12,800
Cantera Opal 5.750ct loose
Sale price¥18,800
Mexican Cantera Opal 2.125ct Loose
Sale price¥39,800
Mexican Cantera Opal 5.882ct Loose
Sale price¥39,800
Mexican fire opal (faceted cut) 0.167ct loose stone
Sale price¥8,800
Mexican fire opal (faceted cut) 0.198ct loose stone
Sale price¥8,800
Ethiopian Opal 6.6mm/0.635ct Loose
Sale price¥9,800
Yellow tourmaline 2.290ct loose
Sale price¥8,800
Australian boulder opal 13.190ct loose
Sale price¥18,800
Green opal 15.950ct loose
Sale price¥29,800
Cantera opal 14.581ct loose
Sale price¥22,800
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.