Ключевые слова: background, beautiful, black, brecciated, carnelian, close, closeup, collection, crystal, dark, decorative, detail, gem, gemmology, gemological, gemology, gemstone, geological, geology, isolated, jasper, little, macro, material, mineral, minerals, natural, nature, object, ornamental, pebble, piece, polished, precious, red, rock, sample, semiprecious, shooting, small, specimen, stone, stones, surface, texture, textured, tumbled, up,