If opal doesn’t take your fancy, why not consider tourmaline? It’s the newer version of October’s birthstone and is available in a wide variety of colours. Considered a semi-precious gemstone, tourmaline is a semi-occurs in various shades of almost every hue. Tourmaline is mined in Brazil, Sri Lanka, Nigeria, Mozambique, Madagascar, Afghanistan, Pakistan and the U.S.A. Paraíba…