Rainbow Moonstone Heart Stud Earrings + Rubber Backings One pair in stock. Light weight stud earrings, comes with a pair of rubber backings. Rainbow Moonstone is a stone of inner growth and strength. It soothes emotional instability and stress, and stabilises the emotions, providing calmness. Moonstone enhances intuition, promotes inspiration, success and good fortune in love and business matters. It restores mental balance. Comment with any questions. Bundle to save on shipping. Join daily live shows for exclusive items & discounts.