Cite this: Feuchtwanger, Lewis. 1867. A popular treatise on gems : in reference to their scientific value : a guide for the teacher of natural sciences, the jeweller, and amateur : together with a description of the elements of mineralogy, and all ornamental and architectural materials .., New York : Feuchtwanger.
Original Caption: 1 Sib. Beryl. 2 Emerald. 3 Rubellite. 4 Brazil Topax. 5 Ruby. 6 Star Sapphire. 7 Opal. 8 Hyacinth.