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Lab grown diamonds, also called synthetic, cultured, or man-made diamonds, are chemically, physically, and optically identical with natural diamonds. Unlike mined diamonds, which are formed deep within the earth's mantle over millions of years, lab diamonds are developed in the laboratory using advanced technologies that mimic the natural diamond formation process.
These technologies are Chemical Vapor Deposition (CVD) and High Pressure High Temperature (HPHT), which allow professionals in the laboratory to create beautiful diamonds in a few weeks. A diamond formed with the process is a real diamond with the same crystal structure, sparkle and durability.
Lab created diamonds are considered more ethical than natural diamonds for several reasons:
This makes Lab diamonds a more responsible choice for those seeking ethically sourced and eco-friendly diamond jewellery.
"When you buy lab grown diamond jewellery from Pure Jewels, you are investing in ethical luxury. We have a wide selection of loose conflict-free diamonds for you to browse, as well as ethical diamond jewellery like lab grown diamond earrings, rings, and necklaces."
Lab grown diamond offers several advantages over natural or mined diamonds, making it a popular choice for consumers.
Here are the main benefits:
Lab grown diamonds are made of the same material as natural diamonds: Pure Carbon. The only difference is that Lab grown diamonds are created in a laboratory while natural diamonds are formed naturally deep in the earth's crust for millions of years.
Now that you know what lab grown diamonds are, you may wonder how we can create an authentic diamond in a laboratory.
For a better explanation, we can answer this question by considering how mineral diamonds are formed in nature.
The process that natural diamonds go through takes several billion years to complete. It occurs when carbon deposits deep below the earth’s surface are exposed to high temperatures and pressure, causing the carbon atoms to bond together and slowly form a crystal.
Natural Diamonds, which are formed from carbon under extreme heat and pressure beneath the Earth, can now be created in a laboratory environment by humans. There are two primary methods for transforming carbon into the crystalline structure of a diamond in the lab:
During the HPHT method, a small diamond seed is placed in pure carbon and then exposed to heat and pressure that simulate the conditions deep under the Earth's crust.
Then a temperature of around 1500 degrees Celsius (2900 Fahrenheit) and a pressure of 5.5 million pounds per square inch melt the layer of carbon and starts to form a perfect diamond around the seed.
Carbon is subjected to intense heat and pressure, resulting in its transformation into diamond.
High Pressure High Temperature (HPHT) diamonds are created using one of three manufacturing processes: the cubic press, the belt press, or the split-sphere (BARS) press. Each method simulates the conditions that form natural diamonds beneath the Earth.
In the CVD or Chemical Vapor Deposition process, diamonds are grown using lower pressure and less heat compared to the HPHT method. Instead of relying on extreme pressure, CVD uses carbon based gases to create the diamond.
This process begins with a small diamond seed, which can be a synthetic diamond or an initial seed slice created through the HPHT process. The seed is placed within a sealed chamber and heated to temperatures normally ranging from 700°C to 1200°C. A mixture of gases, such as methane and hydrogen, is then injected into the chamber. Under this condition, the methane gas breaks down and carbon atoms are extracted and begin to form the diamond around the seed.
"By these methods, real diamonds can be grown within a few weeks to several months, as compared to the millions of years it takes for diamonds to form naturally."
Because lab grown diamonds are man-made in a lab, they are conflict-free and socially responsible.
Lab grown diamonds have the same physical, chemical, and optical properties as mined diamonds.
Lab grown diamonds offer excellent value and are more affordable than natural diamonds of comparable size and quality.
Compare the Differences | Mined Diamond | Lab Created Diamond |
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Is it considered a diamond? | ![]() |
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Chemical Composition | ![]() |
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Source | The Earth | A Laboratory |
Time Taken to Create | 1 to 3 Billion Years | Several Weeks to Months |
Independently Created | ![]() |
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100% Conflict-Free | Depends on Source | ![]() |
Does it test as a real diamond vs simulated diamond? | ![]() |
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Price Comparison (of comparable quality and size) | $$$$ | $$ |
Like the natural diamonds, our laboratory-grown diamonds have the same crystal structure and exhibit the same brilliance and sparkle.
In simple terms, both lab-grown and mined diamonds are real diamonds with the same sparkle and durability.
Yes, lab grown diamonds certified by the same authorized gemological institutions that grades naturally mined diamonds:
1. Gemological Institute of America (GIA): GIA Started grading lab grown diamonds in 2007 and continues till present.
2. International Gemological Institute (IGI): IGI is the world's first laboratory to hold ISO accreditation for both natural and lab grown diamond certification.
Lab made diamonds are graded using the same standards as natural diamonds, known as the "four C's": cut, clarity, color, and carat.
All the Lab Grown Diamonds jewellery sold by PureJewels.co.in are graded by these reputable institutes.