Renna 18-Karat Yellow Gold and Diamond Dream Shell Pendant with Rock Crystal and Green Agate Starfish. Rock crystal is a healing stone that stimulates wisdom, courage, and loyalty—so much so, ancient Romans believed their gods lived in them, and Buddhists trust that it leads to total enlightenment when meditating. A color closely affiliated with nature, green agate restores balance and harmony in mental, emotional, and physical health (especially that of the digestive system) to its most unaffected form. Handcarved in Germany and finished in the USA. Set on a retractable bale featuring .05 carat of diamonds. Approximately 1 3/4 drop including bale. Sold as a Pendant.