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 "

Afghanistan Bicolor Tourmaline 1.653ct Loose Stone Sale price¥49,800

Brazilian bicolor tourmaline 7.445ct loose stone Sale price¥69,800

Brazilian Bicolor Tourmaline Cat's Eye 9.5mm/4.730ct Loose Stone Sale price¥18,800

Brazilian bicolor tourmaline cat's eye 2.640ct loose stone Sale price¥12,800

[On sale from 10pm on 5/5] Illusion pink tourmaline (iridescent tourmaline) 4.097ct loose stone Sale price¥55,800

ブラジル産パライバトルマリン 0.184ct原石（CuO:1.5%、MnO:0.6%）

Brazilian Paraiba tourmaline 0.184ct raw stone (CuO:1.5%, MnO:0.6%) Sale price¥12,800

ブラジル産パライバトルマリン 0.180ct原石（ CuO:1.8%、MnO:0.1%）

Brazilian Paraiba tourmaline 0.180ct raw stone (CuO:1.8%, MnO:0.1%) Sale price¥12,800

Brazilian Paraiba tourmaline in quartz 3.678ct loose Sale price¥9,800

Brazilian bicolor tourmaline 12.842ct loose Sale price¥298,000

Nigerian pink tourmaline 1.527ct loose stone Sale price¥18,800

Brazilian Pink Tourmaline 0.361ct Loose Stone Sale price¥9,800

Zambian Canary Yellow Tourmaline 0.25ct Loose Stone Sale price¥9,800

【さくらシェイプ】ブラジル産グリーントルマリン6.7mm/ 1.057ctルース

[Sakura Shape] Brazilian Green Tourmaline 6.7mm/1.057ct Loose Patch Sale price¥39,800

ブラジル産パライバトルマリン 3.1mm/0.151ctルース（CuO:1.1%、MnO:3.8%）

Paraiba tourmaline from Brazil 3.1mm/0.151ct loose (CuO:1.1%, MnO:3.8%) Sale price¥29,800

Brazilian Paraiba tourmaline in quartz 2.864ct loose Sale price¥9,800

Brazilian Paraiba tourmaline in quartz 2.801ct loose Sale price¥9,800

Brazilian Paraiba Tourmaline in Quartz 6.0mm/0.783ct Loose Stone Sale price¥15,800

Brazilian Paraiba Tourmaline in Quartz 0.712ct Loose Stone Sale price¥15,800

Brazilian Paraiba Tourmaline in Quartz 6.0mm/0.676ct Loose Stone Sale price¥15,800

Brazilian Paraiba Tourmaline in Quartz 6.0mm/0.728ct Loose Stone Sale price¥12,800

Brazilian Paraiba Tourmaline in Quartz 6.0mm/0.718ct Loose Stone Sale price¥18,800

Brazilian Paraiba Tourmaline in Quartz 6.0mm/0.735ct Loose Stone Sale price¥15,800

Brazilian Paraiba Tourmaline in Quartz 6.0mm/0.751ct Loose Stone Sale price¥15,800

Brazilian Paraiba Tourmaline in Quartz 6.0mm/0.704ct Loose Stone Sale price¥15,800

Brazilian Paraiba Tourmaline in Quartz 6.0mm/0.656ct Loose Stone Sale price¥15,800

Brazilian Indigolite Tourmaline 3.707ct Loose Stone with Certificate of Authenticity Sale price¥128,000

Brazilian Paraiba Tourmaline 0.220ct loose stone (CuO: 0.7%, MnO: 3.0%) GIT Sale price¥45,800

【12558570掲載】モザンビーク産イリュージョントルマリン（イリデッセンストルマリン） 5.903ctルース

[12558570] Mozambique Illusion Tourmaline (Iridescent Tourmaline) 5.903ct Loose Stone Sale price¥59,800

モザンビーク産モザンビーク産イリュージョンパライバトルマリン 4.030ctルース

Mozambique Illusion Paraiba Tourmaline 4.030ct Loose (CuO:0.3%, MnO:0.9%) Sale price¥98,000

モザンビーク産モザンビーク産イリュージョンパライバトルマリン 2.708ctルース

Mozambique Illusion Paraiba Tourmaline 2.708ct loose stone (CuO:0.3%, MnO:2.5%) Sale price¥69,800

Unheated Brazilian Paraiba Tourmaline 0.075ct loose stone (CuO: 1.8%, MnO: 2.3%) Sale price¥49,800

Brazilian bicolor tourmaline 4.291ct loose stone Sale price¥55,800

Brazilian bicolor tourmaline 6.227ct loose stone Sale price¥69,800

Illusion Pink Tourmaline (Iridescent Tourmaline) 5.308ct Loose Stone Sale price¥69,800

Illusion Pink Tourmaline (Iridescent Tourmaline) 4.172ct Loose Sale price¥59,800

Afghanistan Seafoam Tourmaline 0.429ct Loose Stone Sale price¥25,800

Brazilian Green Tourmaline 0.831ct Loose Stone Sale price¥25,800

Afghanistan Seafoam Tourmaline 0.253ct Loose Stone Sale price¥15,800

Afghanistan Blue Tourmaline 5.0mm/0.457ct Loose Stone Sale price¥19,800

Brazilian Green Tourmaline 4.1mm/0.259ct Loose Stone Sale price¥12,800

Brazilian Green Tourmaline 0.236ct Loose Stone Sale price¥9,800

Brazilian Green Tourmaline 0.270ct Loose Sale price¥12,800

非加熱ブラジル産パライバトルマリン 0.065ctルース（CuO:2.0%、MnO:2.2%）

Unheated Brazilian Paraiba Tourmaline 0.065ct loose stone (CuO: 2.0%, MnO: 2.2%) Sale price¥59,800

モザンビーク産エルバイトトルマリン 1.580ctルース（CuO:0.1%,Mn0:1.9％）

Elbaite tourmaline from Mozambique 1.580ct loose stone (CuO: 0.1%, Mn0: 1.9%) Sale price¥59,800

アフガニスタン産バイカラートルマリン 2.664ctルース（シーフォームトルマリン）

Afghanistan Bicolor Tourmaline 2.664ct Loose Stone (Seafoam Tourmaline) Sale price¥128,000

Brazilian Green Tourmaline 1.031ct Loose Stone Sale price¥22,800

Brazilian Pink Tourmaline 0.772ct Loose Stone Sale price¥12,800

Brazilian Paraiba Tourmaline in Quartz 0.295ct Loose Stone Sale price¥14,800

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.

KARATZ・Five Commitments

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.