Ключевые слова: background, brown, cement, close, close up, collection, concrete, crystal, dark background, decorative, gemmological, gemmology, gemological, gemology, gemstone, geological, geology, little, macro, macro shooting, material, metamorphic, mineral, mineralogy, natural, object, ore, ornamental, pebble, piece, pink, purple, quartz, quartzite, quarzit, raw, red, rock, rough, sample, sandstone, small, specimen, stone, structure, surface, texture, textured, white,