Schorl - Dravite Tourmaline in Quartz #2 Popular Crystals_Smoky Quartz In the Middle Ages

In the Middle Ages

some with clear patches of clear Selenite growth

just as we’ve done here

Hematite is usually seen as a dark black

Schorl - Dravite Tourmaline in Quartz #2 Popular Crystals_Smoky Quartz In the Middle AgesThis incredible specimen of Tourmaline in Quartz is believed to be from the Piaui River Pegmatite in Minas Gerais Brazil, rather than the more commonly labelled Piaui region in north east Brazil. Rather than being a straight Black Tourmaline (Schorl), it displays a rich yellow green brown colour when backlit, and is instead much more likely to be a member of the Schorl Dravite series, with varying concentrations of iron and magnesium. The growth