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Tourmaline
Tourmaline

Tourmaline

by Nineteen48

📏 14.8 × 10.6 mm

⚖️ 7.8 ct

🌱 Natural tourmaline

Elahera, Sri Lanka

Cut and finished in Sri Lanka

⭐️ This stone is untreated/unheated.

🤝 Responsibly sourced through Nineteen48's trusted supply chain

A stunning orange tourmaline weighing 7.8 carats. Intense colour and beautiful cut‚ this is a show-stopping gem for a dramatic cocktail ring.

SKU SL-EH-TOU-000045
£6,600.00 - £6,600.00
£6,600.00
£6,600.00 - £6,600.00
£6,600.00
Only one available

Discover more

Tourmaline Facet Oval Orange Untreated

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.

Elahera is a town in the North Central province in Sri Lanka, located between Kandy and Dambulla.

This region has been a productive gem-mining area for several decades.

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