All natural gemstones, including sapphires are costly. That’s due to the cost incurred in locating them in nature, followed by the cost of mining. These can be produced in a lab at a substantially lower expense.
Cost
The most important advantage of lab-grown sapphires is their cost. Natural sapphires become expensive not only because of their quality, but because they need to be located before they can be mined out.
Lab-grown variety is less expensive as a manufacturing process replaces the process of mining. It’s very economical to create the conditions for making a high-quality sapphire than tunneling thru the surface of the earth to locate the naturally formed variety. Moreover, the process of growing stones in the lab is much faster and therefore, demands can be fulfilled quickly. .
Materials
For all practical purposes, lab-grown sapphires are real sapphires. Blue sapphires (the color that is most often associated with a sapphire) are made from corundum that is nothing except aluminum oxide.
Natural sapphires have the same chemical composition, and many stones grown in labs actually use sapphire dust. Man made sapphires are made using the same pressure and temperature under which natural ones get formed naturally in the deeper layers of earth
Quality
A simple way that distinguishes a lab-grown sapphire from its natural counterpart is its degree of perfection. Those made in labs are indeed very perfect, as men and machine control their growth and can thus be made as per customer specifications, whereas the natural ones are totally shaped by nature.
Though it’s possible to incorporate flaws in man made variety, generally they remain flawless. It’s very rare to have flawless natural rubies but manmade rubies are most often flawless.
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