Tag: Indicolite
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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…