The Book of the Pearl - The history, art, science, and industry of the queen of gems English 3769h 2m read
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 English 2016h 22m read
Shakespeare and Precious Stones - Treating of the Known References of Precious Stones in Shakespeare's Works, with Comments as to the Origin of His Material, the Knowledge of the Poet Concerning Precious Stones, and References as to Where the Precious Stones of His Time Came from English 321h 5m read