natural rough precious opal gemstone

organ art circle jewellery screenshot green flower eye blue hand underwater invertebrate earth leaf pattern natural rough precious opal gemstone closeup show opalescence phenomenon dark background opal precious gemstone gem rough natural raw dark black background crystal jewelry stone isolated macro closeup nature mineral shiny beautiful uncut gemology translucent transparent rock opalescence display colorful color vivid brilliant mineraloid iridescence fire abstract quartz silica sample geology collection mineralogy light jewel chunk pebble specimen luxury ethiopian bright