What should diamonds look like under blue light?

Strong: Diamonds with Strong fluorescence emit a substantial and intense blue hue under UV light, and can cause a diamond to appear very cloudy, milky, or hazy to the naked eye.
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What color should diamond be under blue light?

Diamond Fluorescence Under a UV Light

Diamonds with Medium to Very Strong Blue fluorescence will react to UV light by exhibiting a ghostly blue hue. From a visual perspective, this has minimal impact. Unless you work at a nightclub, you aren't likely to spend your day seeing the diamond flashing from UV light.
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Do real diamonds glow under blue light?

Do all diamonds fluoresce? No. Only about 25% to 35% of diamonds exhibit some degree of fluorescence in reaction to long-wave UV light. More than 95% of these diamonds fluoresce blue.
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Do fake diamonds glow blue under UV light?

FACT: Absolutely not. The presence or absence of fluorescence should not be used as a DIY test to determine if your diamond is real. First, not all natural diamonds fluoresce under the standard UV lamp used by gemologists (see Myth #1). Second, some synthetic or lab grown diamonds do fluoresce to these wavelengths.
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What should a real diamond look like under a blacklight?

Around 35% of diamonds grown naturally have this component in them, and 95% of them glow a bluish color when exposed to a black light. The other 5% may glow in a variety of other colors, including red, yellow, white, green, and orange.
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What does a fake diamond look like under a UV light?

Black light test:

When you place a real diamond underneath an ultraviolet light, the stone with fluorescence in it will turn blue. But it's important to know that this will only happen with about one-third of all diamonds. A fake diamond, on the other hand, will almost never look blue under a black or UV light.
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What color are fake diamonds under a UV light?

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.
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Why do some of my diamonds look blue under UV light?

Strong: Diamonds with Strong fluorescence emit a substantial and intense blue hue under UV light, and can cause a diamond to appear very cloudy, milky, or hazy to the naked eye.
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Why is my diamond purple under a blacklight?

Diamonds glow in black lighting due to a phenomenon called fluorescence and roughly 35% of natural diamonds exhibit some degree of this effect. In nature, the presence of certain chemical impurities within the diamond's composition triggers this glowing effect in the presence of an ultraviolet light source.
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Do cubic zirconia glow under black light?

Fake diamonds like cubic zirconia do not glow under black light!
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What does it mean when a diamond turns white under UV light?

Fluorescence is the visible light that a diamond emits when it is exposed to the UV rays. Fluorescence is naturally occurring, and at it's best it can make off white diamonds look whiter or more colourless. Around 30% of diamonds evaluated by the GIA have varying degrees of fluorescence detailed on the certificate.
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Do real diamonds have a blue tint?

Blue diamonds are real, natural diamonds that form beneath the earth's surface over billions of years. These diamonds are not color-treated or enhanced to get their blue color—it is natural. The mesmerizing color of the blue diamond comes from traces of boron in the diamond's carbon composition.
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What light do diamonds look best in?

Daylight or indirect sunlight from a window, especially a north window which provides more consistent illumination all day, is the most important light for looking at diamonds. I never buy a large diamond without looking at it in daylight. In daylight, you'll see what a diamond really looks like.
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How can you tell if a diamond is real?

Most diamonds will reveal blue florescence under a black light; therefore, you'll see a medium to strong color of blue, which means the diamond is real. If you don't see the blue color and instead see a slight green, yellow or gray fluorescence then this usually indicates the gem is not a real diamond.
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What colors should you see in a real diamond?

The way that diamonds reflect light is unique: the inside of a real diamond should sparkle gray and white while the outside should reflect a rainbow of colors onto other surfaces. A fake diamond, on the other hand, will have rainbow colors that you can see inside the diamond as well.
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Can diamonds be light purple?

Yes, purple diamonds do exist! But treated and lab-grown purple diamonds are very much more common than natural purple diamonds. The source of the natural color of purple diamonds is a bit mysterious.
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Can diamonds fluoresce purple?

Diamond fluorescence can come in a variety of colors but the most common and preferable is blue fluorescence. Some diamonds are listed as strong blue fluorescence, which just means that it has Strong fluorescence of the Blue variety. Other colors of diamond fluorescence include green, purple, orange, yellow, and white.
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Why would a diamond look purple?

As for the artificially enhanced diamond, the stone is a natural diamond but the color is artificially enhanced. In the natural colored loose diamonds, the cause of the purple hue is the presence of significant amounts of boron and hydrogen.
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Is very strong blue fluorescence bad?

Strong blue fluorescence is not necessarily bad. Many diamonds with strong blue fluorescence do not adversely affect their appearance. Once, we observed an M color diamond looked like a near-colorless diamond because of very strong blue fluorescence. Diamonds with very strong fluorescence, always blue, are not common.
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Do diamonds look different under UV light?

Natural diamonds have a property known as fluorescence. This phenomenon enables diamonds to produce glows of varied colors when exposed to black light (also known as ultraviolet light). A pure and natural diamond is known to produce a blue glow when exposed to black light.
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Why do diamonds sometimes look blue?

Fluorescence is caused by the presence of nitrogen as a trace element in your diamond. Three nitrogen atoms in lattice position in the crystal structure will commonly cause blue fluorescence. Sometimes, the blue is strong and sometimes the blue is faint.
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Does real diamond shine in dark?

Diamonds do not have their own light. They shine when light incident on it, refracts inside it and suffers multiple internal reflection and remains trapped in it. Due to this it shines. However in dark room, there is no light that can penetrate inside, hence it does not shine or is neither visible.
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Why does my diamond look milky?

For example, your diamond may have inclusions clustered together in the same area, making the stone appear milky or foggy. Diamond fluorescence may also be the culprit. Some diamonds may have strong fluorescence that can give off a milky hue and reduce the value of the diamond.
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