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 "

Limited to 20 stones: Brazilian Paraiba tourmaline (cabochon cut, approximately 2.2 mm) [Multiple purchase discounts available] Sale price¥9,800

[Option] Paraiba Tourmaline component analysis sorting issuance fee Sale price¥5,000

Zambian Canary Yellow Tourmaline (4.0mm/Round Cut) Loose Stone - Limited 5 Pieces (Multiple Purchase Discount Available) Sale price¥6,980

Brazilian Paraiba Tourmaline Ring and Half Eternity Ring Set (1.2mm) Sale price¥198,000

[Option] Paraiba tourmaline analysis report attached identification certificate issuance fee Sale price¥15,000

[On sale May 4th at 10 PM] "Limited to 11 Gems" Rouge Cut & Heart Shape Gemstone Gacha for ¥18,800! 💎 Almandine Garnet, Pink Tourmaline, Scolecite, Sapphire. "Multiple Purchase Discount Available" Sale price¥4,980

Brazilian Indicolite Tourmaline 0.352ct Loose Stone with Certification Sale price¥29,800

モザンビーク産エルバイトトルマリン 1.456ctルース（CuO:0.1%,MnO:0.4%）

Elbaite tourmaline from Mozambique 1.456ct loose stone (CuO: 0.1%, MnO: 0.4%) Sale price¥45,800

モザンビーク産エルバイトトルマリン 1.574ctルース（CuO:0.1%,Mn0:3.1％）

Elbaite tourmaline from Mozambique 1.574ct loose stone (CuO: 0.1%, Mn0: 3.1%) Sale price¥55,800

Yellow tourmaline 0.277ct loose Sale price¥6,980

Green tourmaline 0.559ct loose Sale price¥6,980

Pink tourmaline 0.632ct loose Sale price¥9,800

Pink tourmaline 1.575ct loose Sale price¥12,800

Brazilian Bicolor Tourmaline 0.780ct Loose Sale price¥12,800

Sold out

【12562733掲載】ブラジル産パーティカラーパライバトルマリン 0.260ctルース

[Listing 12562733] Brazilian Parti-Color Paraiba Tourmaline, 0.260 ct Loose Gemstone

Sold out

【22602545掲載】K18YG ブラジル産パライバトルマリン 0.064ct リング

[Application deadline: Thursday, May 14th, 10 am JST] Lottery Sale_0508_02 K18YG Brazilian Paraiba Tourmaline 0.064ct Ring (CuO:1.9%, MnO:2.4%)

《Tucson New Arrival - Limited to 8 Stones》Zambian Canary Yellow Tourmaline Average 0.47ct《Bulk Purchase Discount Available》 Sale price¥7,980

《New Arrivals from Tucson・Limited to 9 Stones》Canary Yellow Tourmaline from Zambia, average 0.18ct《Multi-purchase discount available》 Sale price¥3,980

【12555695掲載】ブラジル産パライバトルマリンインクォーツ 0.313ctルース

Brazilian Paraiba Tourmaline In Quartz 0.50mm/.313ct Loose Sale price¥15,800

Unheated Brazilian Paraiba tourmaline 0.110ct loose AIGS Sale price¥258,000

ブラジル産パライバトルマリン 0.101ctルース（CuO:0.9%,MnO:0.1%）

Paraiba Tourmaline from Brazil 0.101ct Loose Stone (CuO: 0.9%, MnO: 0.1%) Sale price¥39,800

Unheated Brazilian Bi-Color Paraiba Tourmaline 0.105ct Loose Stone GIA (CuO:2.2% MnO:1.2%) Sale price¥198,000

0.079ct Loose Brazilian Paraiba Tourmaline (CuO: 1.6% MnO: 2.8%) Sale price¥29,800

Paraiba Tourmaline Loose Stone from Brazil 0.068ct (CuO: 1.1% MnO: 0.1%) Sale price¥45,800

Brazilian Paraiba Tourmaline 0.052ct Loose Stone (CuO:1.2% MnO:1.2%) Sale price¥35,800

Brazilian Paraiba Tourmaline 0.052ct Loose Stone (CuO:1.4% MnO:1.1%) Sale price¥35,800

Brazilian Paraiba Tourmaline 0.051ct Loose Stone (CuO:1.1% MnO:0.6%) Sale price¥35,800

Brazilian Paraiba Tourmaline 0.048ct (CuO:1.5% MnO:1.0%) Sale price¥35,800

Brazilian Paraiba Tourmaline 0.047ct Loose Stone (Batalha Mine, CuO:0.7% MnO:1.9%) Sale price¥35,800

Untreated Brazilian green tourmaline, 0.456 ct, loose (teal color) Sale price¥13,800

Lagoon Tourmaline from Afghanistan, 2.649 ct Loose Stone, Central Japan Gem Laboratory Sale price¥198,000

Untreated green tourmaline from Brazil, 0.596 ct, loose Sale price¥9,800

Green tourmaline 0.621ct loose stone Sale price¥9,800

Green tourmaline 0.457ct loose stone Sale price¥8,800

Bicolor tourmaline 1.198ct loose Sale price¥12,800

Brazilian Paraiba tourmaline in quartz 0.819ct loose Sale price¥14,800

【12558471掲載】イリュージョントルマリン（イリデッセンストルマリン） 3.107ctルース

Iridescent Tourmaline 3.107ct Loose Stone Sale price¥37,800

Green tourmaline 0.090ct loose stone Sale price¥5,980

Bicolor tourmaline 0.423ct loose Sale price¥12,800

Bicolor tourmaline 0.552ct loose Sale price¥12,800

Bicolor tourmaline 0.548ct loose Sale price¥6,980

Green tourmaline 0.637ct loose Sale price¥8,800

Zambian Canary Yellow Tourmaline 0.158ct Loose Stone Sale price¥9,800

Blue Tourmaline 1.460ct Loose Stone Japan-Germany Exchange Sale price¥39,800

Bicolor Tourmaline 0.649ct Loose Stone, Japan-Germany Sale price¥12,800

Unheated Bicolor Paraiba Tourmaline 0.092ct Loose GIA Sale price¥188,000

Bicolor Paraiba tourmaline 2.477ct loose DGL version Sale price¥298,000

Brazilian unheated parti-colored Paraiba tourmaline 0.411ct loose stone (tri-color) DGL Sale price¥398,000

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.