Hyalite opal

HYALITE OPAL

 Hyalite opal gemstone is clear and colorless and has a rounded shape. It is an unshaped form of silica and volcanic sublimate. It contains 3 to 8% of water. Therefore it is considered a mineraloid.

One of the most captivating qualities of hyalite opal is its fluorescent green glow in shortwave ultraviolet light. All minerals can reflect a degree of light, but some have the physical qualities that allow them to temporarily absorb a small amount of light and releases it in a different wavelength.