As we have seen so far, crystals and gemstones have played a part in all cultures and religions. Thus, we can only naturally expect them to be mentioned quite a lot in each religion’s holy book. We have found passages describing gemstone usage in the Bible, the Koran, as well as many other religious texts. For example, the High Priest’s breastplate’s description found in Exodus 28:15-20 is very representative for a number of reasons. The breastplate thus contained 12 gems, each with the name of the original 12 Hebrew tribes inscribed on it, as follows: Sardium, Topaz, Emerald, Ruby, Sapphire, Diamond, Opal, Agate, Amethyst, Beryl, Onyx and Jasper. Zodiac-related gems were later based on the above mentioned stones. As we all know, the Bible contains quite a few translation challenges, which make the identification of the exact stones used in the breastplate impossible. Different versions of the Bible all state different gems. For example, Sapphire was not known in that age and area of the world, thus we believe that this term was used to describe lapis lazuli. Sardium surely refers to Sardonyx while Ruby could mean Carneol. Diamond could also lead to a transparent Quartz.