gold ring with tourmaline and diamond

An 18 carat yellow gold ring set with an emerald cut red pinkish tourmaline (of 9 carat), the shank is slightly tilted and is made from three bands, the left side is set with four diamonds on the middle band. On the right side the two outer bands are set with both four diamonds (total weight of the diamonds: 0.12 ct.), signed: Trudel, Switzerland.

weight: 15.46 grams
ring size: 16.75 mm / 6 1/4 US