hyalite opal crystal (green under short wave uv) on schorl (black tourmaline).

hyalite opal water jalite muller 39aph39 glass schorl black tourmaline green ultraviolet uv short wave fluorescence glow fluorescent reactive mineral texture closeup detail abstract semiprecious raw unpolished stone rock gemstone natural pattern precious rough color crystalline crystal macro gem crystallography sparkle facet gemology geology jewelry jewel structure surface background crack multicolor healing rockhounding