Engraved Gems

The Curious Lore of Precious Stones Being a description of their sentiments and folk lore, superstitions, symbolism, mysticism, use in medicine, protection, prevention, religion, and divination. Crystal gazing, birth-stones, lucky stones and talismans, astral, zodiacal, and planetary

George Frederick Kunz

Leisure hours among the gems

Augustus C. Hamlin

Gems in the Smithsonian Institution

Paul E. Desautels

Stories About Famous Precious Stones

Adela E. Orpen

Il nuovo lume delle gioie Opera utilissima ad'ogni persona, così a orefici, e speciali, per l'arte pratico.

Pietro Caliari

The City of God, Volume I

Augustine, of Hippo, Saint