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 "
![[Limited to 10 stones] 1 stone bicolor tourmaline from Brazil [Discount available for multiple purchases] (Rose cut, Mr. NOBU cut)](http://store.karatz.jp/cdn/shop/files/PC010278_9f92dbde-79da-4517-afa3-68a365bb8393.jpg?v=1701480752&width=4000)
![{7th Anniversary Special}💎 [On sale from 10pm on 12/8] Tanzanian cornel tweezers (8 stones or more usually worth 15,000 yen) Plus get 1 Brazilian indigolite tourmaline {Multiple purchase discounts available}](http://store.karatz.jp/cdn/shop/files/collage_ec97d9a4-e0ff-4886-b742-9210fb1736d8.png?v=1733611124&width=1000)
![[For beginners in opal]《Limited to 8 sets》October birthstone opal 3 stone set (from Australia, Peru, South Africa)《Multiple purchase discount available》](http://store.karatz.jp/cdn/shop/files/P9280715_1938d1c6-1c5d-45ca-8cbe-da3815e6134a.jpg?v=1695895616&width=4000)
![[On sale from 10pm on 5/4] Gem Gacha💎 1 Paraiba Tourmaline from Brazil (Batalha mine, 2.5-3.0mm, also includes blue)](http://store.karatz.jp/cdn/shop/files/P1010088_642b7e89-6be8-48c9-a911-8c2473bd3689.jpg?v=1745884740&width=4000)
![[Limited to 7 sets] October birthstone tourmaline 3 stone set (1 rough stone from Afghanistan, 2 loose 2.5mm stones)](http://store.karatz.jp/cdn/shop/files/collage_f030bcec-eb65-4b81-ba3b-dac5ee2b8033.jpg?v=1697452375&width=4000)
![[Limited 5 stones] Rare stone gacha 💎 Win Red Beryl, Alexandrite, Paraiba Tourmaline [Multiple purchase discount available]](http://store.karatz.jp/cdn/shop/files/PC010236_0f522c1b-6370-448f-9602-969cf6171481.jpg?v=1701566459&width=4000)
![[On sale from 10pm on 5/3] Limited quantity: Brazilian Paraiba tourmaline, 1 stone loose (Batalha mine, oval cut) [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/P1010006_53a82b0f-45d4-4593-84bf-969ee24b0c75.jpg?v=1746179133&width=3081)
![[On sale from 10pm on 4/26] {Limited to 3 stones} Gem gacha💎 1 loose Brazilian tourmaline (October birthstone, lion cut) {Multiple purchase discounts available}](http://store.karatz.jp/cdn/shop/files/collage_3e04b1d2-9a76-4e67-9757-2d60e057a24e.png?v=1745376670&width=2000)
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.
The fifth reprint has been decided and is now on sale at bookstores nationwide and online.
Written by KARATZ, book “Jewelry Illustrated Book”
The book provides explanations about over 300 types of gemstones, from new standard birthstones to rare stones that are hard to find, as well as a diary of our company representative, Mr. Koyama's, gemstone shopping experience in Thailand and Sri Lanka, and tips for photographing gemstones, allowing you to learn about the appeal of gemstones from various perspectives.
