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How to Identify a Lab-Grown Diamond

Lab grown diamonds UK appear identical to natural mined ones due to their similar chemical composition of carbon atoms arranged in crystal structure – just as diamonds on Earth do.

However, it’s impossible to tell the difference between a lab-grown diamond and one mined without special testing. Therefore, lab-grown diamonds must be sent to specialized laboratories that perform complex analyses.

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1. Specimen

Identification of a lab-grown diamond can be tricky. To begin, one must understand what sets these gems apart from natural ones.

Laboratory-grown Man made diamonds UK are created in controlled laboratories that replicate the conditions under which diamonds form naturally. This process utilizes extreme heat, pressure and special deposition methods to swell a diamond seed and transform it into an actual gemstone.

They are then expertly cut and polished by a team of highly-trained specialists, before being GIA certified and graded on the same basis as mined diamonds.

Jewelers can observe visual features as well as use various tests such as UV testing and Polaris cope. More sophisticated tests, like spectroscopy, may also be available in certain laboratories.

2. Characteristics

Lab-grown diamonds are man-made gemstones with the same chemical, physical and structural properties as natural diamonds. They’re created through advanced technology such as extreme pressure/heat or CVD deposition.

High quality lab-grown diamonds are incredibly hard, boasting an average Mohs hardness rating of 10 and capable of being polished to a flawless shine just like natural diamonds. Plus, they have the same color and clarity as their naturally occurring counterparts.

Lab-grown diamonds can be graded on a color scale from D to Z, with D being the most colorless and Z being the most yellow. A D graded diamond is closest in hue to pure graphite.

The color of a lab-grown diamond is determined by the trace elements included during production. These may include trace amounts of nickel or iron, which can influence its brilliance and fire.

3. Colour

Lab-grown diamonds are more cost-effective and come in an array of colors compared to natural diamonds. From pink to blue, yellow to green, these man-made crystals share the same crystal structure as mined diamonds and therefore possess similar chemical and optical characteristics.

Lab-grown diamonds differ from simulants such as cubic zirconia and moissanite in that they are made of true carbon crystals, making them easily distinguishable with just the naked eye.

To identify a lab-grown diamond, look for an inscribed small mark on the girdle of the stone that reads “Lab Grown.” Additionally, use a jeweler’s loupe with 30x magnification to identify it.

4. Carat

Carat weight, the measure of a diamond’s size, is an important factor when comparing lab-grown to natural diamonds.

When measuring the carat weight of a lab-grown diamond, jewelers use an objective gemological test that takes into account four qualities: cut, colour, clarity and carat. These qualities combine to determine both its beauty and value as jewelry item.

One way to create diamonds in a laboratory is through Chemical Vapor Deposition (CVD). This involves placing the seed, and flat slither taken from another gemstone, in a chamber filled with gas. The carbon-rich gas becomes sticky to the seed and eventually turns it into a diamond.


  1. In summary, lab-grown diamonds are identical to natural ones in appearance and properties, making it difficult to distinguish them without specialized testing. However, there are some characteristics that can help identify them, such as their origin, color, and inscriptions on the girdle of the stone. Lab-grown diamonds are created using advanced technology and can come in a variety of colors, making them a more cost-effective option gjcollegebihta compared to natural diamonds. When measuring the carat weight of a lab-grown diamond, jewelers use the same standards as they would for natural diamonds. As the technology continues to improve, lab-grown diamonds will likely become an increasingly popular alternative to mined ones.

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