tourmaline

Tourmaline is one of the birthstones for October. It is a gemstone with so many color variations that it is said that there is no such thing as a non-existent color, and some gemstones show multiple colors within a single stone. It has the property of generating static electricity when heated, and its Japanese name is "tournament stone." Some are called by specific names depending on their color.

Karatz GemMagazine
" Tourmaline "

Paraiba tourmaline from Brazil 0.071ct loose Sale price¥39,800

Paraiba tourmaline from Brazil 0.052ct loose Sale price¥29,800

Paraiba tourmaline from Brazil 0.051ct loose Sale price¥29,800

Paraiba tourmaline from Brazil 0.048ct loose Sale price¥29,800

Paraiba tourmaline from Brazil 0.072ct loose Sale price¥32,800

ブラジル産パライバトルマリン 0.120ct《エイトリータ》ルース（CuO:2.0%、MnO:0.7%）

[On sale at 10pm on November 9th] Brazilian Paraiba Tourmaline 0.120ct "Eitrea" loose stone (CuO: 2.0%, MnO: 0.7%) Sale price¥128,000

ブラジル産パライバトルマリン 0.230ctルース GIA（CuO:0.9%、MnO:1.1%)

Brazilian Paraiba Tourmaline 0.230ct Loose GIA (CuO: 0.9%, MnO: 1.1%) Sale price¥158,000

K18/Pt950 カンボジア産ブルージルコン0.48ct・パライバトルマリンリング

《Yurakucho Marui 2024112 takeout》K18/Pt950 Cambodian blue zircon 0.48ct / Paraiba tourmaline ring Sale price¥89,800

Brazilian Paraiba Tourmaline 0.136ct loose stone (CuO: 1.8%, MnO: 2.0%) Sale price¥39,800

Brazilian Paraiba Tourmaline 0.143ct loose stone (CuO: 0.9%, MnO: 1.9%) Sale price¥25,800

Brazilian Paraiba Tourmaline 0.202ct loose stone (CuO: 0.6%, MnO: 0.1%) Sale price¥55,800

Brazilian unheated bicolor Paraiba tourmaline 0.178ct loose stone (CuO: 0.9%, MnO: 2.8%) Sale price¥298,000

Elbaite tourmaline from Mozambique 1.138ct loose stone (CuO: 0.1%, Mn0: 1.6%) Sale price¥59,800

Elbaite tourmaline from Mozambique 2.964ct loose stone (CuO: 0.1%, Mn0: 4.4%) Sale price¥45,800

アフガニスタン産バイカラートルマリン（通称名：バイカラールベライト） 2.736ctルース

Afghanistan Bicolor Tourmaline (also known as Bicolor Rubellite) 2.736ct loose stone Sale price¥79,800

アフガニスタン産バイカラートルマリン（通称名：バイカラールベライト） 3.512ctルース

Afghanistan Bicolor Tourmaline (also known as Bicolor Rubellite) 3.512ct Loose Sale price¥98,000

アフガニスタン産バイカラートルマリン（通称名：バイカラールベライト） 2.888ctルース

Afghanistan Bicolor Tourmaline (also known as Bicolor Rubellite) 2.888ct Loose Sale price¥88,000

Brazilian pink tourmaline 3.462ct loose stone Sale price¥59,800

Elbaite tourmaline from Mozambique 1.192ct loose stone (CuO: 0.1%, MnO: 1.5%) Sale price¥59,800

Green tourmaline 0.512ct loose stone Sale price¥9,800

Bicolor Tourmaline 13.489ct Loose Sale price¥9,800

Bicolor tourmaline 9.199ct loose stone Sale price¥9,800

Bicolor tourmaline 3.468ct loose stone Sale price¥6,980

Bicolor tourmaline 7.532ct loose stone Sale price¥9,800

Bicolor tourmaline 7.809ct loose stone Sale price¥9,800

Bicolor tourmaline 1.258ct loose Sale price¥12,800

Brazilian bicolor tourmaline 1.248ct loose stone Sale price¥18,800

Paraiba Tourmaline from Mozambique 0.248ct loose stone Sale price¥12,800

Paraiba Tourmaline from Mozambique 0.223ct loose stone Sale price¥12,800

Brazilian bicolor tourmaline 0.502ct loose stone Sale price¥12,800

Mozambique Pink Tourmaline 1.122ct Loose Stone (Contains CuO) Sale price¥39,800

Brazilian Paraiba Tourmaline 0.759ct rough stone Sale price¥45,800

非加熱ブラジル産パライバトルマリン 0.037ctルース（CuO:1.9%、MnO:2.3%）

Unheated Brazilian Paraiba Tourmaline 0.037ct loose stone (CuO: 1.9%, MnO: 2.3%) Sale price¥49,800

非加熱ブラジル産パライバトルマリン 0.067ctルース（CuO:1.4%、MnO:2.4%）

Unheated Brazilian Paraiba Tourmaline 0.067ct loose stone (CuO: 1.4%, MnO: 2.4%) Sale price¥59,800

K18PGブラジル産パライバトルマリン0.286ct・グランディディエライトリング GIA

K18PG Brazilian Paraiba Tourmaline 0.286ct Grandidierite Ring GIA Sale price¥198,000

Pt950 Pink Tourmaline 0.302ct Kornelupine Ring Sale price¥79,800

Brazilian Paraiba Tourmaline 1.459ct rough stone Sale price¥59,800

非加熱ブラジル産パライバトルマリン 0.034ctルース（CuO:1.8%、MnO:2.4%）

Unheated Brazilian Paraiba Tourmaline 0.034ct loose stone (CuO: 1.8%, MnO: 2.4%) Sale price¥39,800

Unheated Brazilian Paraiba Tourmaline 0.071ct loose stone (CuO: 2.1%, MnO: 2.2%) Sale price¥59,800

Brazilian Paraiba Tourmaline 0.200ct loose stone (CuO: 1.7%, MnO: 2.8%) Sale price¥98,000

Brazilian Paraiba Tourmaline 0.821ct rough stone Sale price¥39,800

Brazilian Green Tourmaline 26.071ct Loose Stone (Sugarloaf Cut) Sale price¥298,000

ブラジル産バイカラートルマリン 6.928ctルース（バイカラーブルートルマリン）

Brazilian bicolor tourmaline 6.928ct loose stone (bicolor blue tourmaline) Sale price¥298,000

非加熱ブラジル産パライバトルマリン 0.051ctルース（CuO:2.0%、MnO:2.3%）

[On sale at 10pm on 7/27] Unheated Brazilian Paraiba Tourmaline 0.051ct loose stone (CuO: 2.0%, MnO: 2.3%) Sale price¥55,800

[On sale at 10pm on 7/27] 0.223ct loose canary yellow tourmaline from Mozambique Sale price¥8,800

【さくらインカット】バイカラートルマリン 6.4mm/0.882ct《コラボ》ルースワッペン

[Sakura Incut] Bicolor Tourmaline 6.4mm/0.882ct {Collaboration} Loose Patch Sale price¥45,800

Brazilian Watermelon Tourmaline Rough Stone 7.959ct Sale price¥12,800

Paraiba Tourmaline from Mozambique 0.373ct loose stone Sale price¥15,800

KARATZ Custom Made

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.

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