A TOURMALINE AND DIAMOND RING the pear-cut tourmaline rub ov...

Estimate

£20,000 - £30,000

A TOURMALINE AND DIAMOND RING
the pear-cut tourmaline rub over set within a bezel of sixteen brilliant-cut diamonds, above basket setting. 
Total weight 9.8gms
Ring size N1/2
Accompanied by GEMRESEARCH SWISS LAB REPORT
Stating that the it is a Natural Tourmaline "Cuprian-Elbaite" weighing 5.38 carats.
The stone contains minor elements (including copper) such as found in tourmalines from Paraiba (Brazil) (Accuracy as testing in mounting permits)