Here is a fabulous ring by the prolific Danish silversmith Herman Siersbøl (see bio). The  silver-gilt rocky, sculptural centrepiece is set raised up from the smooth round silver frame. 

CONDITION: Excellent, no visible damage

Marks: HS 925S

Size:   Split shank,so adjustable to several sizes up or down from current resting place at UK  N, US 7.  Top of ring is 2.5 cm, (1") across and rises 1 cm  above the shank. 

Year: 1970s?