Mexican Fire Opal Dark 2-10mm Chip - 15-16 Inch Love Prehnite is translucent to transparent

Prehnite is translucent to transparent

inclusions of Goethite or Hematite refract the light between the layers of the crystal

is an iridescent composite of organic and inorganic material most known for being the coating of pearls

laced with bands or swirls of brighter blue

and was first discovered in 1854 in Norway

Mexican Fire Opal Dark 2-10mm Chip - 15-16 Inch Love Prehnite is translucent to transparent[Use Fire Opal description? This Fire Opal contains both Opal and the rhyolitic host material in which it is formed, which provides sufficient hardness for the stone to be cut. The name Fire Opal is derived from the translucent fiery oranges and reds for which the Opal is known, though it also can occur in dark brown and golden colors. Some specimens of Fire Opal produce iridescent flashes and are referred to as Precious Fire Opal or Firmament Stone.]