Ring with citrine and diamond

Ring with citrine and brilliant-cut diamond approx. 0.12 ct, WHITE (H)/VS, heart-cut citrine approx. 14.2 x 9.5 mm, 18K yellow gold, 13.8 g, ring size: 49, W: approx. 6 - 16.6 mm, 21st century, minor signs of wear, with hallmark. Citrine should be re-set.