Ключевые слова: abstract, adornment, agate, aggregate, amulet, bands, birthstone, chalcedony, concentric, crosssection, decoration, design, detail, gem, gemstone, geode, geology, grit, ground, healing, indoors, interior, isolated, jewellery, jewelry, lace, light, luster, macro, material, mineral, natural, object, orange, ornament, pattern, pebble, polished, properties, ring, rock, science, semipellucid, semiprecious, silica, stone, structure, talisman, transparent, yellow,