These are beautiful sunset mystic topaz sterling silver stud earrings. The Mystic Topaz stones are 6MM round, checkerboard cut, and backs are hypoallergenic comfort backs that will allow the earrings sit upright on the ear and not droop. The mystic topaz have been treated and enhanced by a company called Azotic in Minnesota. Mystic Topaz is associated with healing and good luck as it boosts energy and positive feelings.