Tourmaline Tourmaline is the name given to a group of 14 minerals of which elbaite and schorl are the most common. Tourmaline can be found in South Africa, Namibia, Zimbabwe Mozambique and Swaziland. Tourmaline is found in a wide spectrum of colours ranging from...
Azurite Azurite can be found in many forms and is often associated with Malachite. As it’s indicates, the colour is light to deep azure blue. Chemical Formular : Cu3(CO3)2(OH)2 Refractive Index : 1.730-1.838 Hardness : 3.5-4 on the Mohs Scale Crystal System :...
Aquamarine Aquamarine is a well known gem used frequency in jewellery. It comes in various tones of blue, obtaining its name from Latin, the translation being “water of the sea” Chemical Formular : Be3Al2Si6O18 Refractive Index : 1.570 to 1.592 Hardness :...
Chrysocolla Chrysocolla is most often found in botryoidal or bubbly crusts. The colour is typically blue, bluish-green and it has a waxy lustre. Chemical Formular : Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O Hardness : 2.5 – 3.5 on the Mohs Scale Crystal System :...
