Enjoy over 46 gemstone-specific buying guides ranging from sapphires and emeralds to more exotic gems like quahog pearls and chrysoprase.
These unique resources extensively cover all of the gemological basics, the properties of each gem, special information, considerations for jewelers, treatments to consider, factors that influence gem pricing, and much more.
Beautiful photography supplements detailed descriptions so you can understand exactly what is being discussed (our members love the photos).