The detailed textured red cinnabar red heart is 3/4 inches tall and a tiny red glass heart dangles 2 inches altogether. Antique Chinese cinnabar consists of a toxic material so modern Chinese cinnabar is manufactured with red resin. The oval red and tiny round red beads are manmade coral. The 16 inch necklace is neclace comes with a gold filled toggle clasp, the 18 inch necklace comes with a gold filled leverback clasp and the 20 inch necklace uses a gold colored pewter toggle clasp. Please specify which length you need. Matching red cinnabar heart heart e arrings are listed with gold filled french hooks and a longer red cinnabar heart earring in sterling silver. The earrings are sold separately.