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Collecting and Classifying Coloured Diamonds: Introduction, Collecting, Rarity, Value (An Illustrated Study of the Aurora Collection Book 1)
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Collecting and Classifying Coloured Diamonds: Colour: Varieties, Modifiers, Tones (An Illustrated Study of the Aurora Collection Book 3)
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Collecting and Classifying Coloured Diamonds: Colour: Perception, Measurement, Appearance (An Illustrated Study of the Aurora Collection Book 2)
Collecting and Classifying Coloured Diamonds: Diagrams, Glossary, Bibliography (An Illustrated Study of the Aurora Collection Book 4)