Ключевые слова: amethyst, aquamarine, background, brilliant, carat, chrysolite, closeup, crystal, crystalline, decoration, decorative, demantoid, diamond, emerald, expensive, fluorite, gem, gemology, gemstone, geology, glass, glitter, green, isolated, jewel, jewellery, jewelry, luxury, malachite, material, mineral, mineralogy, natural, precious, quartz, raw, rock, sapphire, semiprecious, shine, shiny, specimen, stone, structure, surface, texture, tourmaline, transparent, treasure, valuable,