natural gemstone red ruby and white pearl 7 to 8 mm round pearls and oval ruby beads 18 inch long necklace, 1 inch long teardrop pendant silvertone lobster claw clasp This lovely necklace is mostly made up of 8 millimeter white almost round pearls. Near the center are a few oval ruby accent beads and in the center is a 1 inch long puffy teardrop of red ruby. The 18 inch long necklace closes with a lobster claw clasp.