Ключевые слова: abstract, adornment, african, agate, background, banded, blue, bright, brown, chalcedony, closeup, colore, crack, crystal, decorative, detail, gem se, gemology, geology, gray, hard, line, macro, material, matte, mineral, mining, natural, object, organic, pattern, precious, purple, quartz, raw, rock, rough, selective focus, shiny, slab, slice, stone, striped, structure, surface, texture, tint, translucent, unpolished, vibrant, violet, white,