WHAT IS A LAB GROWN DIAMOND?
A lab grown diamond is a diamond that has been grown in a lab. They have the same chemical composition and crystal structure as a natural earth mined diamond. Due to its identical nature, lab created diamonds have the same hardness and light refraction as a natural diamond. Lab created diamonds are referred to as synthetic because they are chemically and physically the same as a natural diamond but are man made.
HOW ARE LAB GROWN DIAMONDS MADE?
There are two main technologies used to grow diamonds. High Pressure High Temperature (HPHT) and Chemical Vapor Deposition (CVD).
HPHT synthetics are made by placing a diamond “seed” ,or flat thin slice of diamond, into a chamber where it is then exposed to pressure, heat and chemicals to mimic the growth conditions a natural diamond would go through. During the heating and pressure changes the chemical mixture becomes molten and molecules are attracted to the diamond seed where growth then happens.
CVD uses a lower pressure and creates an environment very different to what a natural diamond would experience. A diamond seed is placed inside the chamber and then a mixture of gas chemicals are circulated through the chamber while microwave radiation heats up the particles that are then deposited onto the diamond seed.
HOW ARE LAB GROWN DIAMONDS GRADED?
Lab grown diamonds are graded using the standard ‘4C's’ that natural diamonds are graded by.
Carat: how much a diamond weighs
Colour: starts on the alphabet as a D,E,F being colourless, G,H,I is near colourless and as you continue down the alphabet the diamonds gradually become warmer with a yellowish colour.
Clarity: what kind and how many inclusions are a part of the diamond. Every diamond is unique like snowflakes or fingerprints and having inclusions is a natural part of diamonds.
Cut: how well the diamond has been cut into the desired shape. The better the cut the more sparkle and beauty you will see in your diamond. At Vena Nova, our diamonds are minimum a Very Good cut rating.
HOW DO I KNOW I AM BUYING A LAB GROWN DIAMOND?
The growth patterns and some inclusions in both HPHT and CVD diamonds are different compared to natural diamonds which help to identify them as man made lab created diamonds. All our lab grown diamonds are laser inscribed to clearly identify its origin.
HOW MUCH DO LAB GROWN DIAMONDS COST?
Lab grown diamonds are anywhere from 50-70% less expensive than natural diamonds.
WHY ARE LAB GROWN DIAMONDS LESS EXPENSIVE THAN NATURAL DIAMONDS?
The technology for lab grown diamonds keeps improving and as it becomes more efficient a higher quantity and quality of Lab grown diamonds are produced. Having lab created diamonds readily available makes them less rare and helps keep them more affordable compared to natural diamonds which are a finite resource and are more expensive to mine.
WILL MY LAB GROWN DIAMOND HOLD ITS VALUE?
We cannot guarantee that as the technology keeps improving, lab created diamonds should become more affordable. However, we believe prices have stabilized without major influx of supply or technological advancement.
CAN MY LAB GROWN DIAMOND BE APPRAISED?
Yes, our in house graduate gemologist (G.G. GIA) can provide an appraisal upon request.
ARE LAB GROWN DIAMONDS THE SAME AS OTHER LAB GROWN GEMS SUCH AS MOISSANITE OR CUBIC ZIRCONIA?
No. Moissanite and C.Z. have different crystal structures. They are lower on the moh’s scale of hardness and produce different light refraction.
WHAT FORMS OF PAYMENT DO YOU ACCEPT?
It generally takes 4-5 weeks depending on what changes need to be made, design difficulty and your time frame.