What is a Lab Grown Diamond ?
Natural diamonds are famous for their age, forming millions to billions of years ago. In contrast, laboratory-grown diamonds are young. With a variety of high-quality options in new colors at a reduced price point, the demand for laboratory-grown diamonds has risen in recent years.
Like their natural counterparts, laboratory-grown diamonds have the same crystal structure, consisting of tightly bonded carbon atoms. This results in nearly the same chemical, optical and physical properties as natural diamonds. By eye, the difference can potentially be indistinguishable. However, they are separated by vastly different growth histories, which experienced gemological laboratories like IGIG ,GIA can detect with advanced instrumentation.
Making a diamond.
There are two main processes used to create laboratory-grown diamonds: High-Pressure, High-Temperature and Chemical Vapor Deposition.
High-Pressure, High-Temperature (HPHT): Mimicking some of the key conditions of diamond formation – a capsule containing a source of carbon and a mixture of metals is heated to temperatures of 1300-1600°C (2400-2900° F) under pressures of 5-6 GPa, the equivalent of a depth of 150-190 km (~90-120 miles) beneath the surface of the Earth. An HPHT press can also be used to treat diamond color. The size of the diamond depends on several parameters, including the time allowed for growth and the volume of the capsule.
Chemical Vapor Deposition: Dramatically different from natural growth, CVD occurs at near-vacuum pressure. Based on complex gas-phase chemical processes typically activated by microwaves, the resulting glowing plasma ball releases carbon-containing constituents that rain onto diamond seeds, crystallizing as a new diamond at temperatures of 700-1200 °C (~1300-2200 F). CVD growth ideally progresses layer-by-layer, with each subsequent layer replicating the crystal structure beneath, creating a cubic block of diamond. The eventual size of the diamond depends on the size of the diamond seeds and the time allowed for growth.
Identifying a laboratory-grown diamond.
Laboratory-grown and natural diamonds fundamentally differ in the way that the crystal was produced and the environment that they were exposed to since growth, resulting in clues that we can use to separate them. The species, distributions and relative concentrations of small atomic-level irregularities in the crystal and impurities, scientifically known as defects, reveal whether a diamond is natural or lab-grown.
GIA & IGI certificates for lab-grown diamonds
This is because Lab Grown Diamond has the same chemical characteristics as
natural diamond. Therefore, they receive the same certificate.
Today, most Lab Grown Diamonds are certified by the IGI Institute. IGI diamond certificates evaluate the 4Cs: cut, color, clarity, and carat weight. Precise according to strict international standards.
In addition, IGI also certifies lab-grown diamonds. By developing equipment to analyze and differentiate between natural diamonds and Lab Grown Diamonds, there will be a laser number on the edge of each lab-grown diamond.
The price of Lab Grown Diamond has decreased in recent years.
As demand increases higher Lab-grown diamonds have value.
And the price is 60-90% different from natural diamonds, depending on the color, clarity, and weight of each stone.
Whether you are buying a natural diamond or a Lab Grown Diamond, it is important in the purchase. There must always be a certificate together. to confirm that The diamonds you receive correspond to their true quality and value. and use it as a reference for further trading correctly and buy from a store that has a jeweler in charge To get quality products Worth the price and the value you have to pay,
Buy with Fine Silver and Jewelry shop that has been open for more than 23 years by a team of professional gemologists (Gemology Science). and exporters of international Jewelry Makers.
Credit: GIA ,IGI, Lab Greown Diamond
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