HPHT vs CVD Lab Grown Diamonds: Which One is Better?
While looking for a lab grown 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.
Biella Lab Diamond with a 1CT E VS1 Elongated Cushion Cut
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 subjects it to intense pressure (over 1.5 million pounds per square inch) and temperatures of over 1,500°C, causing the carbon to crystallize into a diamond. This environment mimics nature and causes the growth of a lab diamond 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 we all adore.
HPHT vs CVD Lab Diamonds: Which One to Get?
Ronah Lab Diamond with a 0.75ct E VVS2 Id
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
Madelyne Lab Diamond with a 1ct E VVS1 Ex Marquise Cut
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.
The Lucce Lab Grown Diamond Standard
At Lucce, we exclusively source lab grown diamonds that meet the highest standards of brilliance and ethics—whether formed through CVD or HPHT. Our lab grown diamond experts rigorously inspect each stone to ensure it reflects the premium quality and conscious luxury our brand stands for.