HPHT vs CVD Lab Diamonds: Which One is Better?
While looking for a lab diamond engagement ring, many couples ask: are HPHT or CVD diamonds better? We understand that you want the finest lab diamond as the heart and soul of your brilliant piece, so we made this handy guide to help you decide.
How are Lab Diamonds Grown?
What is the difference between the two processes? Let's delve deeper.
High Pressure, High Temperature (HPHT)
Natural diamonds develop deep underground, with high pressure and temperature—and the HPHT process imitates just that. Scientists surround a diamond seed with carbon and place it in an environment mimicking nature to grow a lab diamond gemstone in much less time.
Chemical Vapor Deposition (CVD)
Meanwhile, through a more recently developed process, CVD diamonds imitate how diamonds form in interstellar gas clouds. Here, scientists place a diamond seed in a chamber filled with carbon gas. This carbon bonds with the seed, layer by layer, to form the lab diamond gemstone we all adore.
HPHT vs CVD Lab Diamonds: Which One to Get?
With today's technological advancements, both processes can produce a colorless and flawless lab diamond of the finest quality. Apart from the method behind it, there is no clear distinction whether which process makes better quality gemstones.
But while there is no crucial difference between HPHT and CVD, something that truly matters is the expertly-certified values of a lab diamond gem.
The Bottomline: IGI or GIA-Certified 4Cs
A lab diamond's 4Cs are the true indicators of its quality—expertly graded according to Cut, Color, Clarity, and Carat. These four aspects have the most influence on the beauty and brilliance of your forever piece. Coupled with a GIA or IGI Certification, made by the world's expert on lab diamond grading, you can ensure that these ratings follow the highest possible standards.