Ключевые слова: aragonite, brown, carbonate, clear, close, cobble, collection, crystal, crystalline, druse, gem, gemmology, gemology, gemstone, geode, geological, geology, glass, isolated, little, macro, material, mineral, natural, nature, object, ornamental, pebble, piece, rock, rough, sample, semiprecious, small, specimen, stone, structure, surface, textured, transparent, white,