Ключевые слова: artifact, background, close up, closeup, collection, crystal, crystalline, discovery, fund, gem, gemmological, gemmology, gemological, gemology, gemstone, geological, geology, iron, iron pyrite, iron sulfide, isolated, jewelry, macro, marcasite, material, mine, mineral, mineralogy, natural, nature, ore, pattern, pebble, precious, pyrite, rare, raw, resource, rock, rough, sample, science, shiny, specimen, stone, surface, texture, textured, unprocessed,