Natural Tundra Sapphire Gemstone Necklace. Beautiful earthy natural colors of Tundra Sapphires - fabulous sparkle. 50 gemstones. This is a great dainty and feminine necklace. Natural colors of red, amber, green and yellow. The gems are 4.0-4.5mm in size. The necklace length is 18-19". The chain is 14k gold plate and the clasp is 14k gold filled. Shipping is Free!