identify stones rock help minerals mineral stone gemstones gemstone identification question green help-identify quartz rocks crystal crystals blue agate unknown identify-unknown-mineral black rough banded broncoboss turquoise purple identifying gold diamond silver value emerald white amethyst red #help-identify jasper ore orange aquamarine sapphire heavy calcite malachite clear opal mystery metal inclusions brown corundum metallic copper ruby translucent gem chalcedony or and galena jade opaque sell meteorite water citrine gems garnet pink beautiful emeralds in stones-gemstones-identify-help #stone mineral-silvery mysteryrock fordite identifyagatestone arsenic moonstone platinum weird lapis chemical fire topaz pyrite colorchange marble smooth agates shiny gypsum selenite tourmaline slag beach rare large