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 "
[Listed as 12563729] Brazilian Indicolite Tourmaline 0.389ct Loose
Sale price¥38,800
[Posted as 12563742] Brazilian Bicolor Tourmaline, 1.524 ct loose stone
Sale price¥18,800
[22602666 listed] [Colorful] K18WG Paraiba Tourmaline 0.09ct Ring
Sale price¥198,000
Brazilian bicolor tourmaline 7.489ct loose
Sale price¥39,800
[Posted as 12563996] Australian Black Opal 1.029ct Loose Stone
Sale price¥29,800
Brazilian Paraiba Tourmaline 0.068ct loose stone
Sale price¥61,800
![【#202607 Akihabara Pop-up Store - Currently Removed for Display】[Colorfuri] Pt900 Black Opal 0.83ct / Diamond 0.62ct Ring with Certificate](http://store.karatz.jp/cdn/shop/files/P4085602_239fb724-e8c8-4f49-8fab-65e692522cdb.jpg?v=1785992300&width=4000)
[Published 12563933] Brazilian Rubellite 1.100ct Loose Stone
Sale price¥98,000
[Listed as 12563246] Mexican Fire Opal 1.115ct Loose
Sale price¥25,800
1.082ct Loose Australian Black Opal with Certification
Sale price¥69,800
Australian Black Opal 0.778ct Loose
Sale price¥35,800
Brazilian Green Tourmaline 0.770ct Loose Stone with Appraisal Report
Sale price¥25,800
[Lottery Sale 0428_2_07] Watermelon Tourmaline 14.780ct Loose Stone
Sale price¥128,000
【Colorfleur】Pt900 Black Opal 0.58ct Pendant Top with Authenticity Card
Sale price¥55,800
Brazilian Paraiba Tourmaline 2.9mm/0.090ct Loose (CuO:1.7% MnO:1.4%)
Sale price¥69,800
Brazilian Blue Tourmaline in Quartz 10.466ct Loose
Sale price¥39,800
Brazilian Blue Tourmaline in Quartz 4.241ct Loose
Sale price¥19,800
Brazilian Paraiba Tourmaline 0.360ct Loose GIA
Sale price¥298,000
Brazilian Green Tourmaline 0.376ct Loose Stone
Sale price¥7,980
Brazilian Green Tourmaline 0.332ct Loose Stone
Sale price¥7,980
Australian black opal 3.242ct loose stone
Sale price¥59,800
Brazilian Paraiba Tourmaline 0.060ct Loose (CuO:1.6%, MnO:2.3%)
Sale price¥42,800
Mexican Fire Opal 0.718ct Loose
Sale price¥9,800
Mexican Fire Opal 0.593ct Loose (Faceted Cut)
Sale price¥9,800
Nigerian bicolor tourmaline 0.379ct loose stone
Sale price¥6,980
[12550887] Paraiba Tourmaline from Mozambique 0.784ct loose stone
Sale price¥128,000
Brazilian Paraiba Tourmaline 0.052ct Loose Stone (CuO:2.0%, MnO:2.2%)
Sale price¥35,800
Brazilian Pink Tourmaline 0.862ct Loose Stone
Sale price¥12,800
Brazilian Blue Tourmaline 0.196ct Loose
Sale price¥6,980
Brazilian Green Tourmaline 2.218ct Loose
Sale price¥25,800
Brazilian Bicolor Tourmaline 7.2mm/1.326ct Loose Stone
Sale price¥18,800
Namibian Green Tourmaline 7.0mm/1.206ct Loose Stone (Lagoon Tourmaline)
Sale price¥59,800
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.