The stunning 4mm round cut cz crystal on this birthstone necklace mimics the unusual beauty of natural tourmaline. Associated with October birthdays, this gold plated sterling silver necklace makes a wonderful gift item. It can be selected in one of our most popular lengths; from between 16 and 22 inches and has a simple spring ring fastener. The pendant hangs from a jump ring giving it an overall height of 7mm and is 3mm deep.