News — Fire Opal

What you need to know about Fire Opal

Posted by Carla Grimaldi on

Fire Opal Opals are a hydrated and amorphous form of silica, which happen to have a water content of around 3% to 21%. Thanks to its amorphous character, it is classified as a mineraloid instead of a mineral. Precious opal ranges from clear through white, gray, red, orange, yellow, green, blue, magenta, rose, pink, slate, olive, brown, and black. Of these hues, the black opals are the rarest, whereas white and greens are the most common. It varies in optical density from opaque to semitransparent. Opals have an amorphous crystal system, and have a hardness rate of 5.5-6.0 mohs. About...

Read more →