The Serpentine Ring follows a curved pattern set with round diamonds and finished with a pear-cut stone at each end, on approx. 3.20 g of solid 18K gold (750 hallmark), in yellow, rose or white gold, with a certificate of authenticity. At 1.20 ct in total — 0.90 ct in the rounds and 0.30 ct in the two pears — on only 3.20 g of gold, this carries one of the highest ratios of stone to metal among the rings. The pears at the ends give the curve a beginning and an end rather than letting it run out. Product Details 18K Gold WeightApprox. 3.20 g Diamond WeightApprox. 0.90 ct in round stones Pear-Cut Diamond WeightApprox. 0.30 ct in two stones