Ключевые слова: background, black, close, collection, crystal, crystalline, dark, decorative, gem, gemmological, gemmology, gemological, gemology, gemstone, geological, geology, green, jewelry, little, macro, material, mineral, natural, object, ornamental, pebble, piece, polished, prasiolite, quartz, rock, sample, semiprecious, shooting, small, specimen, stone, structure, surface, texture, textured, translucent, tumbled, vermarine,