A hand-carved Siberian jet skull with an 18k yellow gold bale, plus a bezel-set diamond, hangs from a necklace of chrome diopside cube beads (which have an emerald look) on cinnamon-colored silk with a 14k yellow gold lobster clasp. 18.5 inches long. Skulls represent embracing and understanding your fate and therefore living life to the fullest. They have also been used historically to ward off evil and negativity.