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 "

Brazilian Paraiba Tourmaline in Quartz 8.0mm/1.287ct Loose Stone Sale price¥29,800

Brazilian Paraiba Tourmaline in Quartz 7.9mm/1.314ct Loose Stone Sale price¥29,800

Elbaite tourmaline from Mozambique 2.082ct loose stone (CuO: 0.1%, MnO: 1.4%) Sale price¥69,800

非加熱ブラジル産パライバトルマリン 0.044ctルース（CuO:1.6%、MnO:2.0%）

Unheated Brazilian Paraiba Tourmaline 0.044ct loose stone (CuO: 1.6%, MnO: 2.0%) Sale price¥59,800

非加熱ブラジル産パライバトルマリン 0.068ctルース（CuO:1.4%、MnO:2.3%）

Unheated Brazilian Paraiba Tourmaline 0.068ct loose stone (CuO: 1.4%, MnO: 2.3%) Sale price¥69,800

Brazilian bicolor tourmaline 0.845ct loose stone Sale price¥15,800

K18YG Brazilian Paraiba Tourmaline 0.30ct Diamond Ring GIA Sale price¥198,000

Pt950 Brazilian Paraiba Tourmaline 0.201ct Pendant (Necklace) Sale price¥128,000

Tourmaline 0.541ct loose stone Sale price¥8,800

Brazilian Tourmaline 0.858ct Loose Stone Sale price¥15,800

Brazilian bicolor tourmaline 0.326ct loose stone Sale price¥8,800

Brazilian Pink Tourmaline 0.538ct Loose Stone Sale price¥8,800

Brazilian pink tourmaline 0.844ct loose stone Sale price¥22,800

Brazilian Pink Tourmaline 0.855ct Loose Stone Sale price¥14,800

Brazilian Brown Tourmaline 1.529ct Loose Stone Sale price¥14,800

Brazilian Green Tourmaline 1.059ct Loose Stone Sale price¥16,800

Brazilian Pink Tourmaline 0.628ct Loose Stone Sale price¥15,800

Brazilian Green Tourmaline 0.350ct Loose Sale price¥9,800

Brazilian Indigolite Tourmaline 6.052ct Loose Stone JTL Sale price¥158,000

Brazilian Indigolite Tourmaline 1.616ct Loose Stone JTL Sale price¥69,800

Brazilian Indigolite Tourmaline 1.440ct Loose Stone JTL Sale price¥39,800

Green tourmaline 1.190ct loose stone Sale price¥98,000

Brazilian Green Tourmaline 1.333ct Loose Stone Sale price¥49,800

Brazilian Green Tourmaline 2.907ct Loose Stone Sale price¥98,000

Brazilian Green Tourmaline 0.935ct Loose Stone Sale price¥45,800

Brazilian Green Tourmaline 1.193ct Loose Stone Sale price¥49,800

Brazilian Green Tourmaline 11.453ct Loose Stone Sale price¥158,000

Brazilian Green Tourmaline 9.495ct Loose Sale price¥128,000

Brazilian Green Tourmaline 4.374ct Loose Stone Sale price¥98,000

Pt950ブラジル産パライバトルマリン0.034ctリング（フリュクーシュ枠・オーバルカット）

Pt950 Brazilian Paraiba Tourmaline Ring (Fluid Setting, Oval Cut) Sale price¥64,800

K18YG Brazilian Paraiba Tourmaline Ring (Flucche Setting, Pear Shape, Matte Finish) Sale price¥69,800

Brazilian parti-color tourmaline 2.702ct loose stone Sale price¥69,800

Brazilian Paraiba Tourmaline 0.211ct loose stone Sale price¥49,800

ブラジル産パライバトルマリン 0.620ctルース（CuO：2.72%,MnO：4.93%）GIA&中宝分析

Brazilian Paraiba Tourmaline 0.620ct loose stone (CuO: 2.72%, MnO: 4.93%) GIA & Chuho analysis Sale price¥1,580,000

Paraiba tourmaline from Brazil 0.047ct loose Sale price¥29,800

Brazilian Paraiba Tourmaline 0.068ct loose stone Sale price¥39,800

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

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

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 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

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.