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Frequently Asked Questions
Is strong fluorescence good in a diamond?
Strong fluorescence in a diamond can be a mixed attribute. In some cases, it can enhance the diamond’s appearance by making it appear whiter and brighter, especially in diamonds with lower color grades. However, strong fluorescence can also cause a diamond to appear hazy or milky, affecting its overall brilliance and clarity. Whether strong fluorescence is good or not depends on personal preference and the specific characteristics of the individual diamond.
Should you avoid diamonds with fluorescence?
You do not necessarily need to avoid diamonds with fluorescence. The key is to evaluate how the fluorescence affects the diamond’s appearance. Diamonds with faint to medium fluorescence often show no negative effects and can even appear more vibrant. However, diamonds with strong or very strong fluorescence should be examined closely, as they can sometimes appear hazy or oily. Personal preference and budget will also play a role in deciding whether to choose a diamond with fluorescence.
What are the grades of fluorescence in diamonds?
The Gemological Institute of America (GIA) grades fluorescence in diamonds on a scale with the following categories:
- None: No fluorescence.
- Faint: Very slight fluorescence, usually not noticeable.
- Medium: Noticeable fluorescence under UV light but typically does not affect the diamond’s appearance.
- Strong: Distinct fluorescence that can sometimes affect the diamond’s transparency and appearance.
- Very Strong: Intense fluorescence that may significantly impact the diamond’s look, potentially causing a hazy or milky appearance.
Why does my diamond look fluorescent?
Your diamond appears fluorescent because it contains trace elements, such as nitrogen, that react to ultraviolet (UV) light. When exposed to UV light, these elements emit visible light, most commonly a blue glow. This is a natural characteristic found in both natural and lab-grown diamonds. The intensity and color of the fluorescence can vary depending on the specific trace elements and their concentration within the diamond. Fluorescence is generally only noticeable under UV light, such as sunlight or black lights.
