Burning Desire Heart Necklace. The robins egg blue enamel heart is set in sterling silver and copper. The pendant can hook on and off purple fresh water pearl and Peruvian opal beads so that it can be worn on the beads, off the beads or the beads can be worn by themselves! Three looks within one necklace! The beads can be worn at 16" and 18". The heart measures approximately 1.5" L x 1.25" W.