even if it was made of gold it's still wrong !
the horn was believed to be made of the same material as hair and nails but recently they found
http://www.pbs.org/wnet/nature/episo...-fiction/1178/
Rhino horns are not, as once believed, made simply from a clump of compressed or modified hair. Recent studies by researchers at Ohio University using computerized tomography (CT) scans, have shown that the horns are, in fact, similar in structure to horses’ hooves, turtle beaks, and cockatoo bills. The studies also revealed that the centers of the horns have dense mineral deposits of calcium and melanin — a finding that may explain the curve and sharp tip of the horns. The calcium would strengthen the horn while the melanin would protect the core from being degraded by ultraviolet radiation from the sun. As the softer outer portion was worn away over time by the sun and typical rhino activities (bashing horns with other animals, or rubbing it on the ground), the inner core would be sharpened into a point (much like a wooden pencil).