#precious_metal  any of the less common and valuable metals often used to make coins or jewelry
  supertype:  #valuable  something of value; "all our valuables were stolen"
  subtype:  #bullion.precious_metal  a mass of precious metal (usually in the form of bars or ingots)
  subtype:  #gold  coins made of gold
  subtype:  #silver  coins made of silver

No statement uses or specializes #precious_metal; click here to add one.