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Tourmaline
Tourmaline
Tourmaline
Tourmaline

Tourmaline

by Moyo Gems

📏 8.9 × 7.9 mm

⚖️ 2.49 ct

🌱 Natural tourmaline

Moyo Gems, Tanzania

Sourced through our partner, Moyo Gems

🤝 Responsibly sourced through Nineteen48's trusted supply chain

This oval, orange tourmaline was responsibly mined by a member of the Tanzanian Women Miners' Association (TAWOMA) in the Tanga region of north-eastern Tanzania as part of the Moyo Gemstones project. The stone comes from an artisanal mine and is traceable back to the individual miner. It was cut at our dedicated cutting workshop in Sri Lanka.

It is a clean and well-cut gemstone, showing flashes of golden yellow.

This gem has not been treated in any way.

SKU TZ-MY-TOU-000154
£300.00 - £300.00
£300.00
£300.00 - £300.00
£300.00
Only one available

Discover more

Tourmaline Facet Oval Orange

Tourmalines are a gemstone that comes in a huge colour range, and can also display several colours within one crystal.

Nineteen48 tourmalines are directly sourced from the women miners of East Africa. Most of the tourmalines here are from the Moyo Project, a responsible miner-to-market gemstone collaboration that works with women artisanal gem miners and their male allies in Tanzania. Nineteen48 is proud to be one of only three global partners that supply Moyo Gems to the trade. 

The tourmalines from Tanzania typically display green, yellow, golden brown and occasional chrome green hues.


Other tourmalines are responsibly sourced from the famous Cruziero mine in Brazil and from Sri Lanka. 


None of the tourmalines are treated in anyway.

Moyo Gems is a pioneering, miner-to-market, gemstone collaboration in East Africa.

Nineteen48 is one of the commercial partners working with the women artisanal gem miners and their male allies in Tanzania and Kenya to deliver their gemstones to the international market.

We source our Moyo Gems specificially from miners in various communities in the Tanga region in north-east Tanzania, all of whom are members of the Tanzanian Women Miners' Association (TAWOMA).

Gemmological Info

Composition: Complex borosilicate
Crystal system: Trigonal
Hardness: 7–7.5
Cleavage: Poor
Fracture: Conchoidal
Lustre: Vitreous
Specific Gravity (SG): 2.85–3.40
Refractive Index (RI): 1.610–1.778
Birefringence: 0.014–0.040
Optical nature: Uniaxial (-)
Dispersion: 0.017