a group of stones minerals for gemologist on white background

039 agate amethyst aventurine background birthstone bloodstone carnelian chalcedony chalcopyrite citrine collection copper cornelian crystal decorative epidote eye fluorite gem gemologist gemology gemstone geode geology heliotrope isolated jasper jewelry lithotherapy lot mineral moonstone mottled natural nugget polished quartz raw semiprecious set slice sodalite stone strawberry tiger topaz treasure unakit various wealth white