Fluorite (CaF2) Blue Fluorite with Phantom Purple - Macro view of a very small but special fluorite crystal speciment, only 1 1/4" tall, captured through the glass display case. This shows a clear blue outer row of translucent blue cubes grown over an initial purple crystal.from cobalt123
Aura Quartz is a natural crystal that has been coated with gold fumes. It is created in a vacuum chamber from quartz crystals and gold vapor by a process known as vapor deposition. Additional elements can be used to treat quartz, such as indium, titanium, and copper.