Schorl - Dravite Tourmaline in Quartz #4 Shape_Egg and it must contain at

and it must contain at least 25% blue material in order to be called Lapis Lazuli

This beautiful Stromatolite slice is an unusual shape to see Stromatolite polished into

Emerald is the birthstone for the month of May

please note these towers may have small imperfections due to the material they are polished from

Schorl - Dravite Tourmaline in Quartz #4 Shape_Egg and it must contain atThis 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