What is diamond fluorescence?

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Study for the DCA Gemology Test. Utilize flashcards and multiple-choice questions, each question offering hints and explanations. Prepare effectively for your exam with confidence!

Multiple Choice

What is diamond fluorescence?

Explanation:
Fluorescence is the emission of visible light by a diamond when it’s exposed to ultraviolet light. UV photons excite electrons in impurities or defects inside the diamond’s crystal lattice. When those excited electrons return to lower energy states, they release energy as visible photons, which you see as a glow. This is an emission process, not simply absorption or refraction. The glow is often blue and its strength varies with the diamond’s impurity content and defects. While fluorescence can affect how a diamond looks under certain lighting, it’s a separate property from how color grading is defined.

Fluorescence is the emission of visible light by a diamond when it’s exposed to ultraviolet light. UV photons excite electrons in impurities or defects inside the diamond’s crystal lattice. When those excited electrons return to lower energy states, they release energy as visible photons, which you see as a glow. This is an emission process, not simply absorption or refraction. The glow is often blue and its strength varies with the diamond’s impurity content and defects. While fluorescence can affect how a diamond looks under certain lighting, it’s a separate property from how color grading is defined.

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