Rare black Tahitian pearl with delicate 18 karat yellow gold ring

Rare black Tahitian pearl with delicate 18 karat yellow gold ring 8.9 grams in weight set 10.7 mm south sea pearl dark grey with pink overalls one (good nacre) with surrounding 14 full cut diamonds total weight 14 points. Clarity SI 2 H colour Inherited from my mother ring size is estimated to be 8 - 9