Tourmaline – Natural, Specimen, Red

Set of seven tourmaline crystals from the Mount Mica Mine in Paris, Oxford Co., Maine. These pieces were likely discovered around the mid-19th century. The mine operated from the early 19th century until WWI. © Rob Lavinsky, www.iRocks.com. Used with permission.

Article: Understanding the Inner Workings of the Gem Trade

Credit: www.iRocks.com