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 "
【6/6 22時販売】アフガニスタン産ブルーウォーターメロントルマリン 2.380ctルース
Sale price¥18,800
【6/6 22時販売】ブラジル産ルベライト 2.793ctルース 鑑別書
Sale price¥59,800
Blue watermelon tourmaline 6.815ct loose
Sale price¥49,800
【6/6 22時販売】ブラジル産シーフォームトルマリン 0.334ctルース
Sale price¥16,800
【6/6 22時販売】ブラジル産シーフォームトルマリン 0.347ctルース
Sale price¥18,800
![[On sale May 24th at 10 PM] "Limited to 12 Stones" Blue Gemstone Gacha 💎 Brazil Paraiba Tourmaline (CuO: 1.5%, MnO: 3.2%) and Zimbabwe Euclase, normally priced at ¥35,800, and more! (Multiple purchase discount available)](http://store.karatz.jp/cdn/shop/files/32.png?v=1779063779&width=4000)
[Listing 12563050] Australian Boulder Opal 41.775ct Loose Stone
Sale price¥19,800
[12563049 listed] Australian Boulder Opal 12.216ct Loose Gemstone
Sale price¥15,800
![[On sale May 10th at 10 PM] "Limited to 3 stones" Brazilian Paraiba Tourmaline (Cabochon Cut approx. 3.0mm) 1 Stone Loose Gemstone "Multiple purchase discount available"](http://store.karatz.jp/cdn/shop/files/P5070786_ec0bd736-18d0-4597-8cdf-d783daa25e3b.jpg?v=1778246718&width=3109)
[Listed in 12563029] Nigerian mint green tourmaline 1.319ct loose stone
Sale price¥69,800
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.