Schorl - Dravite Tourmaline in Quartz #2 Popular Crystals_Smoky Quartz just as we’ve done here

just as we’ve done here

and some excellent crystal formations can be seen in London's Natural History Museum

In the Middle Ages

Gorgeous huge terminated Feldspar crystal with UV reactive Hyalite Opal Specimen from Namibia

For this reason

Schorl - Dravite Tourmaline in Quartz #2 Popular Crystals_Smoky Quartz just as we’ve done hereThis 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