background of polished colored gemstones

africa agate amazonite amber amethist aquamarine aventurine beryl bloodstone blue calcite carnelian catseye chalcedony charoite chrysoprase citrine gemstones goldstone heliotrope howlite jade jasper kunzite labrodorite lapis lazuli lepidolite moonstone obsidian opal prehnite quartz rhodenite rhodochrosite rutile sardonix seraphinite smoky sodalite south sugilite sunstone tektite tigerseye topaz tourmaline turquoise verdite zoisite