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A 2 carat lab-grown diamond price starts at $500 and usually runs $560 to $3110. On the other hand, a 3 carat starts at $798 and runs $852 to $31,340. So the extra carat costs under $300, far less than most people expect. What really moves the price isn't size at all. It's clear: flawless 3 carat stones reach $31,340.
How much is a 2 carat lab-grown diamond?
Here's what a 2 carat lab grown diamond price looks like across the grades, taken from current stock.
|
2 carat lab-grown |
Typical price |
|
Entry — G–H color, SI1–VS1 |
$500 – $2000 |
|
Value range — E–F color, VS1–VS2 |
$560 – $2173 |
|
Top color — D, VS1–VVS1 |
$624 – $3031 |
|
Flawless — D–E, IF |
$965 – $3110 |
The cheapest 2 carat in stock is a radiant, E color, VS1 clarity, IGI certified, at $517. That's a stone most people would call eye-clean and white, at the price a 1 carat natural would have cost a few years ago.
How much is a 3 carat lab-grown diamond?
|
3 carat lab-grown |
Typical price |
|
Entry — G–H color, SI1–VVS2 |
$798 – $2,926 |
|
Value range — E–F color, VS1–VVS2 |
$852 – $3.022 |
|
Top color — D, VS1–VVS1 |
$976– $5,736 |
|
Colorless and flawless — D, FL–IF |
$1,878 – $31,340 |
Look at the gap between those last two rows. A 3 carat emerald in F color with VS2 clarity price starts at $800.
2ct vs 3ct: is the jump worth it?
Usually yes, and the numbers are the reason.
|
2 carat |
3 carat |
Difference |
|
|
Entry price |
$500 |
$798 |
+$298 |
|
Value range |
$560 – $2173 |
$852 – $3022 |
+$292 – $849 |
|
Round diameter |
about 8.1mm |
about 9.3mm |
+1.2mm |
That extra carat costs $298 at the entry point. It's one of the few upgrades in jewelry where the price moves less than the appearance does.
Put differently: the gap between a 2 carat lab produced diamond rings price and a 3 carat is smaller than the gap between two 2 carat stones at different clarity grades.
Two things worth knowing before you commit:
-
A 3 carat reads as a statement: On a size 5 or 6 finger it covers a lot of hands. Some people want exactly that; some find it more ring than they expected to wear daily.
-
Settings cost more: A heavier stone needs a sturdier mount, so budget beyond the diamond itself.
If you're unsure how either size looks in practice, our guide to how big a 2 carat diamond is has the millimeter measurements by shape.
How to get a 2–3ct on a smaller budget
The data points at one clear answer: stop paying for clarity you can't see. It cuts a 2 carat lab grown diamond price by more than any other decision you'll make.
Every stone over $3,400 in our 3 carat range is graded FL or IF. Everything below it is VS or VVS. The visual difference is nothing at normal viewing distance, and the price difference runs to thousands.
Where to spend and where to save:
-
Skip FL and IF: VS1 is eye-clean in a brilliant cut. This single choice is worth more than any other trade-off here.
-
Take G or H color: Both face up white once set. A 3 carat pear in F with SI1 clarity is $1,064, the cheapest 3 carat we stock.
-
Pick a shape that spreads: Ovals, pears and marquises cover more fingers per carat than round-shaped diamonds used to cover. So a 2 carat lab grown diamond price buys more visible size in an elongated shape.
-
Go just under the round number: A 2.95 carat costs less than a 3.01, and nobody will ever measure it.
-
Don't save on cut: It's the one grade that changes how the stone looks.
Putting all these things together, a 3 carat in G color with VS1 clarity and an excellent cut lands near $1,570 and looks very close to the $8,826 stone.
Ready to compare? Every 2 carat lab-grown diamond price and 3 carat price is listed with its full grades on our 2 carat and 3 carat collections, IGI or GIA certified, free shipping and 30-day returns. You can also check for lab grown diamond vs natural diamond price on our website.
FAQs
1. What's the price gap between a 2 and 3 carat lab-grown diamond?
About $500 at entry level, or $560 to $624 in the mid range, smaller than most buyers assume, and smaller than one clarity upgrade.
2. What specs give the most size for the money?
G or H color, VS1 clarity, excellent cut, in an elongated shape. That combination maximizes visible size without paying for invisible grades.
3. Why are some 3 carat diamonds eight times the price of others?
Clarity, almost entirely. FL and IF grades carry a steep premium, while VS and VVS stones of identical size and color cost a fraction.
4. Does a 2 carat lab-grown diamond cost more in a fancy shape?
No, usually less. Rounds waste the most rough in cutting, so ovals, pears and emeralds generally come in cheaper per carat.
5. Will these prices drop further?
Possibly a little. Lab-grown wholesale prices have compressed since mid-2024, so the steep annual falls of recent years appear to be leveling off.
