Why does my lab grown diamond look blue?

During the HPHT process, lab diamonds are sometimes exposed to boron, which speeds up the diamond growth process. Boron impurities are what cause the diamond to turn blue. Natural fancy blue diamonds get their color from boron being present while they are formed, too.
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Do lab grown diamonds have a blue hue?

Blue Nuance in Lab Diamonds

Blue Nuance is the faint amount of blue tint that the diamond may display. While it is rare in mined diamonds, it sometimes can be seen in the HPHT-grown ones. Blue tint is the result of the Boron atoms inside the stone's crystal structure.
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Do lab grown diamonds change color?

In response to heat and UV exposure, some synthetic diamond gemstones grown by chemical vapor deposition exhibit large, reversible changes in color.
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What causes blue fluorescence in diamonds?

A diamond will become fluorescent if there are traces of the mineral boron present in the earth during the crystallization process. Diamonds can fluoresce in a variety of colours – blue, yellow, green, orange and white – but blue is the most common.
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What color do lab grown diamonds fluoresce?

Diamonds can fluoresce in a variety of colors – blue, yellow, green, orange and white – but blue is the most common.
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Blue nuance in HPHT laboratory-grown diamonds - How to spot!



Is strong blue fluorescence good?

In the trade, diamonds in the D to H color range with bluish fluorescence are often considered less desirable than similar grade diamonds without fluorescence, because some people believe that bluish fluorescence may cause diamonds to have a hazy or oily appearance.
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Why does my diamond go blue in UV light?

Diamond fluorescence refers to the intensity of a coloured glow (usually blue) that is visible when a diamond is exposed to UV light. In some instances, diamonds with strong fluorescence may look milky and lifeless in daylight, but in most cases, the appearance of a diamond with strong fluorescence is rarely affected.
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Should I worry about diamond fluorescence?

So, is diamond fluorescence good or bad? Well, that depends. The more expensive diamonds (large and high color, think D-E-F) are far more valuable when they exhibit no fluorescence. But for most other diamonds, especially diamonds with Faint fluorescence, this phenomenon rarely impacts the diamond's visual nature.
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Do lab grown diamonds have fluorescence?

Just like natural diamonds, lab grown diamonds can fluoresce under UltraViolet (UV) light. This remarkable characteristic causes diamonds to glow beautiful colours or a brighter shade of white.
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Is fluorescence OK in a diamond?

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.
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Can a Jeweller tell a lab-grown diamond?

Professional jewelers and gemologists cannot tell the difference between a lab created diamond and a natural one just by looking at it with the naked eye. They will have to use a microscope to look for the tiny differences in its inclusions that indicate how it was formed.
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What color is best for lab-grown diamond?

Like natural diamonds, the best color for a lab grown diamond is D color grade. It is the highest color grade available and lab diamonds in this category are completely colorless, even when examined via magnification.
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Can someone tell if a diamond is lab grown?

Lab grown diamonds are chemically the same as mined diamonds, and one of the only ways to tell the difference is for a gemologist to look under a magnifier for a laser inscription on the girdle of the diamond and determine the origin.
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Why aren't all lab diamonds colorless?

Clarity: If the diamond crystal grows too fast, there can be inclusions (called 'feathers') in the diamond. Color: There can also be microscopic inclusions of trace elements or other growth defects that cause the diamond to be near-colorless.
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Do lab diamonds reflect color?

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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How do I know if my lab is natural or diamond?

The differences between Natural Diamonds and Lab Grown Diamonds cannot be seen with the naked eye. Natural Diamonds have tiny amounts of nitrogen, while Lab Grown Diamonds have no nitrogen. This is actually one of the signifiers gemologists use to identify if a diamond is lab grown or natural.
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What are highest grade lab diamonds?

Diamonds with no inclusions visible even under 10X magnification receive the highest grade, the highly prized Flawless (F). The next highest grade is Internally Flawless (IF). Such stones have no visible inclusions, just like F stones, but might have surface blemishes.
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Why are lab grown diamonds not flawless?

A flawless diamond is essentially a diamond with no inclusions. The rarity of flawless mined & lab grown diamonds is what makes them the most expensive clarity of diamond. These inclusions occur when a diamond grows too quickly both in the laboratory and 200km under the earth's crust!
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How much should I spend on a lab diamond?

Unlike natural diamonds, the price of a lab-grown diamond does not increase exponentially with carat size. A round-cut, 2-carat natural diamond starts at about $14,000. You can get a similar lab-grown diamond for about half the cost.
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Is IGI or GIA better?

IGI certifications have a faster turnaround time than GIA. The cost of a GIA's certification is higher than that of an IGI's. IGI certifications are generally respected for both mined and lab-grown diamonds. IGI provides appraisals, while GIA does not.
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How can you tell if a diamond is flawed?

Internal flaws
  1. Crystal/mineral inclusions. An inclusion is visible in near the center of an uncut diamond. ...
  2. Pinpoint inclusions. As the name implies, these inclusions are minute crystals usually white in color present inside the diamond. ...
  3. Needles. ...
  4. Cloud. ...
  5. Knots. ...
  6. Graining. ...
  7. Feathers. ...
  8. Intergrowths.
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Do Tiffany diamonds have fluorescence?

Jewelry Stores sell Diamonds (like Tiffany), and those Jewelers WILL Guarantee GIA Certified Diamonds! Tiffany sells Diamonds with Faint Fluorescence, so your Diamond could possibly look Milky, Foggy or even Hazy (as well as glowing-in-the-dark).
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Do fake diamonds turn blue under UV light?

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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Why is my diamond glowing in blacklight?

Roughly 30% of diamonds contain a certain level of boron, which causes the precious gems to glow when they're exposed to ultra violet, also known as "blacklight." The level of boron present in the diamond determines how much light the diamond will emit when exposed.
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Why do some of my diamonds look different under UV light?

Sometimes, tiny amounts of impurities in diamonds can cause them to glow or luminesce under UV light. UV diamond fluorescence occurs in about 35% of colorless (white) diamonds and can be faint or very strong. (Fluorescence is a type of glow that occurs almost immediately after exposure to UV light).
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