calcite celadonite. structure of a calcite minaral. close-up, texture

crystal celadonite calcite gemstone geology texture selenite mineral kyanite labradorite obsidian pyrite gem white jewelry coral pearl quartz sapphire copper emerald rock ruby garnet macro nature sulfur beautiful dolomite stone amazonite aventurine barite beryl bornite carnelian celestite chalcedony chrysoprase dioptase fluorite hematite