Victorian Era Old Mine Cut Diamond Cluster Earrings19th century Old Mine cut diamond clusters, in silver topped gold settings. Approximately 1. 40 carats in total diamond weight. The central old mine cut diamond is surrounded by 10 additional stones. These would have been originally individual links in a diamond Riviere necklace and later converted into earrings. Circa 1860. English in origin. On 18k gold earrings post with friction backs.