Question 1: Of
the 35% that did have fluorescence, 97% had ________ fluorescence of which 38% had faint blue
fluorescence and 62% had fluorescence that ranged from medium to
very strong blue.
Question 3: In later times, ________ actually believed that gems
(including a diamond) were formed of clear, transparent water, and
that their colors and characteristics were derived from their
metallic spirit.
Question 5: Diamond's ________ and
high dispersion of light – giving the diamond its characteristic
"fire" – make it useful for industrial applications and desirable
as jewelry.
Question 9: The popularity of the diamond ring as an engagement ring for a
much wider audience can be traced directly to the marketing
campaigns of ________,
starting in 1938.
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