An Illustrated Study of the Aurora Collection (Buy all 4 book series)

In order to reintroduce Collecting and Classifying Coloured Diamonds: An Illustrated Study of the Aurora Collection (© S. Hofer 1998), in a convenient eBook format (accessible anywhere in the world), we had to break the massive 742-page original into 4 parts:

Buy all four or one at a time.

Book One Introduction, Collecting, Rarity, Value	Book Two Colour: Perception, Measurement, Appearance
Book Three Colour: Varieties, Modifiers, Tones	Book Four Diagrams, Glossary, Bibliography