Ключевые слова: abstract, adornment, agate, bands, beauty, bright, chalcedony, cleft, closeup, color, concentric, crosssection, crystal, decoration, gem, gemstone, geode, geology, isolated, jewel, jewellery, jewelry, luster, macro, material, mineral, mining, natural, nature, object, onyx, ornament, pattern, precious, quartz, rings, semigem, semipellucid, semiprecious, shiny, silica, stone, structure, talisman, texture, textured, translucent, transparent, yellow,