Natural agate knob/pull. The edges of each piece are electroplated (not gold leaf or gilded, which may rub off) with beautiful thick metallic gold. No two are exactly alike. Tighten with care. No additional hardware required. Agate, amethyst, copper, brass. 1.5" to 2.5" w 1" projection. 1.75" bolt can be trimmed to size. Can do gold, silver and copper edgings.