Ключевые слова: background, beautiful, black, clear, closeup, collection, crude, crystal, gem, gemology, gemstone, geologic, geological, geology, healing, isolated, jewel, jewelry, macro, mineral, mineralogy, natural, nature, purity, quartz, raw, reflection, rock, semiprecious, sharp, shine, shiny, silica, silicate, sparkle, specimen, stone, translucent, transparent,