Victorian Era Old Mine Cut Diamond Cluster Earrings

19th 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.