Ключевые слова: aggregate, background, barite, barium, barium stone, barium sulfate, baryte, baso4, beautiful, cluster, cobble, colorless, crystal, crystalline, decorative, gem, gemmology, gemology, gemstone, geological, geology, gray, matrix, metal, mine, mineral, mineralogy, natural, nature, object, orange, ore, ornamental, pebble, piece, quarry, quartz, raw, rock, rough, sample, semiprecious, specimen, stone, sulphate, surface, texture, transparent, treasure, white,