W. H. Hudson,
The Naturalist in La Plata
“ WE can imagine what the feelings of a lapidary would be--an enthusiast whose life is given to the study of precious stones, and whose sole delight is in the contemplation of their manifold beauty--if a stranger should come in to him, and, opening his hand, exhibit a new unknown gem, splendid as ruby or as sapphire, yet manifestly no mere variety of any familiar stone, but differing as widely from all others as diamond from opal or cat's-eye ”
