Is fluorescence in diamonds good or bad?

In most cases fluorescence is simply an identifying characteristic and not a performance characteristic, and is therefore NEITHER good nor bad. In some cases, strong or very strong fluorescence can make a diamond appear cloudy, diminishing its transparency and eye appeal.

Are fluorescent diamonds cheaper?

Are Fluorescent Diamonds Cheaper? Yes and no. Fluorescent diamonds do trade at slightly different prices than non-fluorescent diamonds, but not the ones you want. I-M diamonds with strong fluorescence trade at a 2-3\% price premium to non-fluorescent diamonds with similar color grades.

How does fluorescence affect prices?

In general, fluorescence diamonds are discounted and it doesn’t affect prices equally. When it comes to colorless (D-F) diamonds, the market “hates” fluorescence and that’s why you see the massive price differences in “Strong” and “Very Strong” levels.

What are fluorescent diamonds?

Diamond Fluorescence. Fluorescence refers to a diamond’s tendency to emit a soft colored glow when subjected to ultraviolet light (such as a “black light”). Roughly 30\% of diamonds fluoresce to some degree. Colorless (D-F) fluorescent diamonds sell at up to a 15\% discount since the fluorescence is perceived as a defect …

Why do diamonds have fluorescence?

Fluorescence occurs when a diamond contains a trace amount of an element that reacts under UV light. This is why the odds of having a pure colorless diamond is highly unlikely, because diamonds in circulation contain a number of compound elements that have been absorbed over millions of years.

Is strong blue fluorescence bad?

Strong blue fluorescence is not necessarily bad! We have seen many diamonds with strong blue fluorescence that has not had any negative effect on the appearance of the diamond. In fact, once we observed an M color diamond look like a near colorless diamond because of very strong blue fluorescence.

What is strong fluorescence in a diamond mean?

Fluorescence refers to a diamond’s tendency to emit a soft colored glow when subjected to ultraviolet light (such as a “black light”). For this reason, I-M diamonds tend to sell at a slight premium when they possess Medium to Very Strong fluorescence.

Can a black light detect a fake diamond?

Transparency Test: Diamonds should not be truly transparent. Ultraviolet Light: About 30\% of diamonds will glow blue under ultraviolet lights such as black light. Fake diamonds, on the other hand, will glow other colors or not at all.

Does cubic zirconia have fluorescence?

Cubic Zirconia (CZ) often shows orange fluorescence but in REVERSE ORDER. This reversal is a sure test for diamond versus CZ.