Natural Blue Lapis Lazuli Gemstone Necklace. 75 gemstones, smooth barrel cut. The gems are 5.5mm in size, rich blue in color, 25 carats. The necklace length is 18-19". The chain and clasp are 14k gold filled or sterling silver - you choose. Wear alone or jumble with other necklaces or even add a pendant. Shipping is Free!