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 tourmaline is a vividly colored purplish or greenish blue variety found in Paraíba, Brazil.
It’s the most recently discovered type of tourmaline and, because of its desirably intense colors, it’s one of the most valuable. Scientists found that the intense colours in Paraíba tourmalines were caused by trace amounts of copper, imparting a unique colour to the gem. In the early 2000s, further Paraíba-type copper-bearing deposits were also discovered in Mozambique and Nigeria.