Ключевые слова: black background, clear quartz, closeup, cluster, colorless, crystal, directly above, gemstone, geology, isolated, jewelry, milk quartz, milky quartz, mineral, mineralogy, precious, precious stone, quartz, rock, rock crystal, semiprecious, silica, silicate, silicate mineral, silicon dioxide, sio2, stone, structural, translucent, transparent, variety, white,