large brutalist design natural tourmaline cabochon artisan ring circa 1970. The green cabochon gems are all natural tourmaline and have been tested. They each vary slightly in color and have natural inclusions which are eye visible. These pretty gems are set in a large sculptural setting that makes an enormous visual impact on the hand. This one of a kind ring is marked for sterling silver and signed inside the shank. It is currently a size 5 1/2 US. The top of the ring measures approximately 1 5/8" in diameter (41mm). It is in good condition and is ready to gift or to wear. The setting is deliberately asymmetrical. There is some slightly movement to the largest cab in the setting. It presents well. Photos are part of the listing