This Sterling Silver Blue Topaz CZ Floating Pendant features a sparkling 6 mm round Blue Topaz CZ. Blue Topaz is one of the birthstones of December. The stone is hand set in a sterling silver bezel mounting. This necklace comes complete with a sterling silver chain measuring 16 inches in length, with an additional 2 inch extender for a total length of 18 inches, and is finished with a sterling silver lobster claw style clasp.