Ключевые слова: cairngorm, clear, crystal, crystalline, dark, dioxide, facet, gem, gemology, gemstone, geode, geological, geology, glass, healing, jewel, jewelery, jewelry, mineral, mineralogy, morion, natural, nature, optical, precious, prism, pure, quartz, raw, rock, rock stone, science, semiprecious, shiny, silicate, silicon, smoky, specimen, stone, structure, translucent, transparent, white,