Natural Amber Tourmaline Gemstone Necklace. Beautiful earthy natural colors of Tourmaline - browns, ambers and greens. 50 gemstones. This is a great dainty and feminine necklace. The gems are 3.to 3.5mm in size. The necklace length is 18-19". The chain is 14k gold plate and the clasp is 14k gold filled. Shipping is Free!