Step 20: Gemology
Picture 1 - About 25 percent of all diamonds fluoresce. Diamonds that fluoresce usually appraise lower than diamonds that do not because they sometimes appear slightly cloudy or milky. However, they appear much brighter in natural light than they really are due to their fluorscence.
Picture 2 - The blue Hope diamond emits a brilliant blood red color under UV. Nearly all diamonds fluoresce blue.
Picture 3 - About 1 in 400 diamonds phosfloresce or glow in the dark after being exposed to UV light. This is a phosphorescent diamond in complete darkness after being exposed to UV light. For some people this makes the diamond even more valuable.
Picture 2 - The blue Hope diamond emits a brilliant blood red color under UV. Nearly all diamonds fluoresce blue.
Picture 3 - About 1 in 400 diamonds phosfloresce or glow in the dark after being exposed to UV light. This is a phosphorescent diamond in complete darkness after being exposed to UV light. For some people this makes the diamond even more valuable.
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