Do carbon lab diamonds pass a diamond test to qualify as real? The answer is both yes and no. There are different ways to diamond test. It's important to know which tests synthetic diamonds will pass and which they will fail. Carbon lab diamonds can pass tests in terms of their physical and chemical properties, but when these synthetics pass in front of experts, their difference are quite apparent.
Natural vs. Lab-Grown Diamonds
Natural diamonds are formed over hundreds of millions – or even billions – of years. This natural process and the time it takes for each unique diamond to form contributes greatly to the worth of a natural diamond.
Carbon lab diamonds are formed using many of the same processes that take place in the earth. This allows lab-grown diamonds to be formed in as little as a week. That's for a 1-carat diamond. A 3-carat diamond can form in as little as a month. Any faster and the diamond crystal will crack during formation. Compared to millions of years, that's much faster – but it's also less meaningful, which is why synthetic diamonds trail natural diamonds in terms of value.
The First Diamond Test
Yes, the crystal structures of natural and lab-grown diamonds are the same, and the chemical compositions are similar (depending on what other chemicals are included for properties like color). In this way, the terms “synthetic diamonds” or “manufactured diamonds” don't actually refer to the diamonds themselves. Chemically, these carbon lab diamonds are real diamonds. “Synthetic” and “manufactured” refers to their lab-based process of creation.
The Second Diamond Test
The GIA has identified many synthetic diamonds that have been fraudulently mixed in with natural ones. It's not that difficult to make these identifications. Carbon lab diamonds have several markers that show their lesser worth.
Clarity and inclusions are assessed in these exams. It's here that most lab-grown diamonds become readily apparent as synthetic.
Metal inclusions can also give them away. Lab-grown diamonds use a metal solution to assist in their growth. This means that carbon lab diamonds have metallic inclusions. Magnifying as little as 10x reveals these inclusions, making them rather obvious to even a cursory examination by an expert using a loupe. Metal inclusions aren't found in natural diamonds. Examining the stones with a loupe is only the most basic step in an expert's assessment, and it already reveals if diamonds are artificially created.
Natural diamonds may have other inclusions, some of which are valued – these include crystals, clouds, and various other qualities earned over time as the stones incorporate other elements or the earth’s crust experiences volcanic eruptions over millions of years. These natural inclusions often contribute to rare visual properties that make mined diamonds unique and sought after. These properties cannot be found in lab-grown diamonds, because they are the result of millions of years of growth, not a week's worth.
As for identifying truly fake diamonds, a “diamond tester," or thermal conductivity probe, can be used. Diamonds are very effective heat conductors, so they quickly disperse heat that's applied to them.
A tester for electric conductivity also provides a useful metric. Diamonds conduct electricity very well, whereas many fakes do not.
Lastly, high-profile weighting separates diamonds from other stones. Scales designed to weigh carats can reveal very small differences in weight between stones. When a stone shows too much difference, it's not a real diamond – natural or synthetic.
What does this all mean for synthetic diamonds? Value is always based on perception and worth. Polls of the public and diamond price points both reveal that synthetic diamonds are simply not as highly sought out or as valued as natural diamonds.
This makes a great deal of sense. Diamonds are still prized as an expression of love. There's a powerful caution among customers when it comes to trusting lab-made diamonds with this emotion.
Ideally, love is everlasting. That's supposed to be symbolized by a stone made in a lab in a week or a month? Natural diamonds can take more than a billion years to form and be uncovered. They have untold experiences while being formed deep within the earth. Each natural diamond is the result of a process that began long before humanity existed. It has earned its place as a symbol of love and care.
Nothing synthetic can match the story of a natural diamond. The symbol with which we seek to express something timeless must itself be timeless. Customers simply don't trust the journey of a synthetically created diamond. A synthetic diamond hasn't earned its place as a symbol of love. That is the message that customers still see when it comes to the choice between natural stones and synthetic ones.
If you have concerns about the authenticity of your diamonds, request a professional diamond analysis by the experts at K. Rosengart today.