Tourmaline Gemstone Australia Wide Tourmaline is the most colourful of all gemstones. It occurs in all colours, but pink, red, green, blue and multicoylored are its most well-known gem colours. Tourmaline is a birthstone for October and the gem of the eighth anniversary. Tourmaline gemstones are semi-precious natural stones that are compounded with various elements like, aluminium, iron, magnesium, sodium, lithium, or potassium. Tourmaline gemstones come in a variety of colors. Some of the fairly common colours available are, green, pure blue, red, orange, yellow, purple, and pink. Raspberry-red rubellites and emerald-green chrome are among the most expensive and rare stones amongst all other tourmaline gemstones. Source Link: https://www.aquagemsjewels.com.au/product-category/gem-stone/tourmaline/ https://mediatimes.com.au/directory/listing/aqua-gems-jewels/