Ключевые слова: biotite, black, brown, closeup, collection, crystal, crystalline, decorative, druse, garnet, gemological, gemology, gemstone, geological, geology, gneiss, jewelry, macro, marble, material, matrix, mica, mineral, mineralogical, mineralogy, natural, object, ornamental, piece, pink, precious, purple, raw, red, rock, rough, sample, semiprecious, specimen, stone, structure, surface, texture, unpolished, white, white background, white marble,