Abrecht bird
Tourmaline – October’s Birthstone

Tourmaline – October’s Birthstone

The term ‘Tourmaline’ is the name given to a large group of boron silicate minerals. Tourmaline has a hardness rating of 7-7.5. This gemstone can be found in a wide variety of colours such as green, pink, blue, yellow, red, orange and colour-zoned/bi-coloured...