William Thomas 
The Book of Talismans, Amulets and Zodiacal Gems [EPUB ebook] 

With 10 illustrative Plates. This is a study of the symbolism of precious stones, and how they have been used as magical objects through the ages, both intrinsically, and as a vehicle for symbolic engravings. The book covers Hindu, Jewish, Chinese, Egyptian, Roman, Gnostic, and Christian lore of gems. The final section discusses the astrological connections of key gems, sign by sign. This work also includes quite a bit of history of important (and often ‘cursed’) stones such as the Hope diamond, and practical advice about purchasing gems. Anyone interested in the symbolism of gemstones will find this a great reference and a fascinating read.