Tag: Verderite
-
Tourmalines from Africa
What are Tourmalines? Tourmalines are a type of gemstone from a group composed of boron-silicate minerals, coming in a variety of different colours. They also contain different elements such as magnesium, sodium, aluminium, iron, potassium and lithium. The individual minerals have different chemical compositions but share a common crystal structure, allowing for their plethora of…