I just got a copy of The Crystal Bible. It is a lovely book and I like the illustrations, but alas, it has errors of fact. I haven't been through every page of the book, but I did note the following while doing a quick scan:
1. Judy uses the word "occlusion" when the correct terminology is "inclusion." This is a serious gaff because inclusions figure very prominently when trying to determine which gemstone is which.
2. She mentions gemstones with 5 stars. I don't believe this at all possible in a natural gemstone. Natural gemstones only exhibit asterism (stars) in 4 or 6 rays. This is due to how crystals are formed. The single ray is termed a cat's eye. Only diopside exhibits a 4 rayed star and that is one of the ways you can identify the stone. 6 rayed stars are most often in the corundum family, that is saphires and rubies, although there are occasional occurances in quartz, notably rose quartz.
3. She states that crysoberyl is a member of the beryl family. Sorry, but wrong. Any basic field guide will tell you that they are members of different mineral families with different crystaline structures, although they may be associated in mines. But that doesn't make them the same family any more than bery and tourmaline, also often found together, are the same family.
Now, these are pretty minor points and probably only of interest to the gemstone collector. However, they make me wonder what other mis-information there is in the book.