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Lab-grown diamond buying guide for U.S. shoppers: What to compare before you buy
A beautifully cut lab-grown diamond ring displays maximum fire and brilliance, highlighting why cut quality is a critical comparison point.
Doesn’t purchasing a lab-created diamond seem simple? Choose a shape, pick a size, see the price, and hit it. It is the same as comparing rocks, but you discover that two diamonds that appear similar on a product page have entirely different pricing.
This article focuses on jewelry prices, so if you are one of those looking to buy a lab-grown diamond ring, price is only part of the story. Everything from the cut, color, clarity, purchase use, and grading report needs to be checked- before that credit card proceeds!
The 4Cs
Start with the 4Cs but do not restrict yourself to these indicators.
However, at entry level, the 4Cs (cut, colour, clarity and carats) still count.
1. Cut
By definition, the refinement of a diamond’s light performance. Typically, a well-cut stone appears brighter and more scintillating. You cannot go high in the carat size ratio of the weight if it was wrongly cut.
2. Color
Color tells you how much yellow or brown tint a diamond has. A higher grade looks whiter, but paying for the highest grade isn’t always necessary.
3. Clarity
Clarity refers to small marks inside or on the surface of a diamond. Some are easy to see under magnification but almost impossible to spot when you’re simply looking at the ring.
4. Carat
Carat is weight, not the exact amount of space the diamond takes up on your finger. For that, look at the measurements too.
Quick comparison
| What to compare | What to look for |
| Cut | Good proportions and plenty of sparkle |
| Color | The level of white or warmth you prefer |
| Clarity | Whether inclusions are noticeable without magnification |
| Carat | Weight along with the actual measurements |
| Certification | A grading report from a recognized lab |
| Growth method | CVD or HPHT, plus any relevant disclosures |
| Price | Compare stones with similar specifications |
Check the grading report
The product page is a good starting point, but don’t stop there!
Through a lab diamond certification, one would get the legitimate specifications highlighting grades and measurements of the stone.
All you need to do is take a minute or so and verify the report number and ensure that it belongs to the diamond you are looking for.
For an IGI-certified ring, this report should match the shape, carat weight measurements, and grades of the stone.
This is essentially what the report does to compare diamonds properly. It doesn’t tell you which stone you should buy. It just makes it easier to see what you’re getting.
CVD or HPHT? Know the difference
There are two types of lab-grown diamonds: CVD (chemical vapour deposition) and HPHT(high-pressure, high-temperature).
You really dont have to understand how the machines work.
The important thing for the consumer to be aware of is that there are two different processes in which a diamond can be grown — CVD versus HPHT.
The growth method is important, but that should not be the only deciding factor.
When shopping for online lab-grown diamonds USA, some tips are to check the grading report and watch for disclosures.
Next, check out the diamond itself with features like cut, color, clarity, and measurements.
Don’t shop by carat and price alone
A 2-carat diamond isn’t automatically a better buy than a 1.7-carat one. Maybe the 2-carat stone has a weaker cut.
Maybe the smaller diamond has better proportions and looks brighter on the finger.
Shape, color, clarity, and measurements all play a part, too.
Price gets tricky for the same reason, especially when searching for affordable engagement rings.
It can be a trap
Its artificial diamonds, however, has its ifs and yelling thumbs down.
Hold on to the deal and compare the comprehensive specifications against a different diamond.
You can discover a lesser stone that appears more exterior and is less costly.
It’s a decent trade for many shoppers.
Shape matters more than you might think
Your diamond will not look the same size on a ring as it would in general, and carat weight does not provide an idea of this.
For instance, an oval or an elongated cushion can seem to be longer across the finger than a round diamond of similar weight.
Emerald, pear, and radiant cuts have their own proportions as well.
So when comparing lab-grown diamond prices, look at the measurements too. Check the length, width, and depth.
A quick look at those numbers can tell you a lot more about the diamond’s size than the carat number by itself.
Keep the rest of that ring in mind
The diamond is only a fraction of the entire invoice
Pricing will differ based on the type of metal, setting & side stones you choose, and any other design details.
For instance, consider a standard solitaire that has a similar middle diamond as a halo ring; it won’t be worth exactly the same!
Now it is best to verify the return policy and warranty before placing an order.
Ask them if the resizing is free of charge or paid if you order something customised.
Ultimately, many of the same lab-grown diamond buying guides that apply to buying a second lab-grown diamond apply apple-to-apple.
Collect a few similar stones, side by side with the report and the measurements & decide which area you would like to spend more on or save.
A few extra minutes of checking can save you from buying a diamond simply because the price looked good.
