Ключевые слова: abstract, apophyllite, background, black, chalcedony, collection, colorful, crystal, crystals, gem, gemstone, geode, geological, geology, green, india, isolated, jewel, jewellery, jewelry, large, macro, manufacturing, mineral, mineralogy, museum, natural, nature, orange, ore, precious, quartz, rock, rough, sample, science, semigem, semiprecious, series, silicate, smokey, specimen, stalactite, stilbite, stone, texture, uncut, valuable, white,