Ключевые слова: aggregate, beautiful, black, brown, closeup, cluster, collection, colored, crude, crystallization, crystals, cutout, decorative, druse, formation, gem, gemology, gemstone, geological, geology, incrustation, isolated, mineral, mineralization, mineralogy, mining, mixed, museum, natural, nature, object, oxide, pebble, piece, quartz, raw, rock, rough, science, specimen, stone, studio, uncut, untreated, wild, yellow,