4.2 Carat Emerald Lab Grown Diamond Prices Comparison
As of May 2026, 4.2 carat emerald lab grown diamonds usually range from $563 to $41,208, with an average price of $5,096.In the last month, prices for these diamonds are down 7.5%.Compare 155 verified listings across 10 retailers tracked by CaratRadar.
4.2 Carat Emerald Lab Grown Diamond Market Overview
CaratRadar currently tracks 155 verified 4.2-carat emerald lab grown diamonds listed across 10 online retailers. Prices in this segment range from $563 to $41,208, with an average asking price of $5,096 and a median of $3,521.
The price spread of $40,645 (98.6% from highest to lowest) highlights why comparing identical certified diamonds across multiple retailers matters. Two identical certified diamonds can differ by hundreds or even thousands of dollars depending on the retailer.
These figures are based on our latest daily market data, matched by certification lab and certificate number across retailers, so you are comparing the exact same diamond.
155 diamonds tracked in this segment
Price range: $563 to $41,208
Average price: $5,096
Median price: $3,521
Available across 10 retailers
Savings potential: up to 98.6%
Price Range Overview
As of May 29, 2026Real market range for this carat, shape, and diamond type.
155
$563
$5,096
$3,521
$41,208
Price History
Price Comparison Matrix
Live Listings
See all listingsCompare current retailer offers for this exact segment and open any listing for full details.
Save 70%IGI | 4.23ct | Emerald | H | VS2 | Ideal
From $604
Compare at $2,016
Save 70%IGI | 4.25ct | Emerald | H | VS2 | Ideal
From $607
Compare at $2,025
Save 70%IGI | 4.29ct | Emerald | H | VS1 | Ideal
From $613
Compare at $2,044
Save 64.6%IGI | 4.23ct | Emerald | G | VS1 | Very Good
From $724
Compare at $2,045
Save 56.2%IGI | 4.27ct | Emerald | H | VS1 | Excellent
From $780
Compare at $1,782
Save 78.5%IGI | 4.27ct | Emerald | G | VS2 | Ideal
From $837
Compare at $3,890
Save 49.5%IGI | 4.22ct | Emerald | E | VS1 | Very Good
From $842
Compare at $1,668
Save 70.4%IGI | 4.29ct | Emerald | F | VVS2 | Ideal
From $848
Compare at $2,860
Save 13.5%IGI | 4.27ct | Emerald | H | VS1 | Good
From $858
Compare at $992
Save 59.1%IGI | 4.23ct | Emerald | F | VS1 | Very Good
From $881
Compare at $2,154
Save 60.4%IGI | 4.23ct | Emerald | G | VVS2 | Very Good
From $881
Compare at $2,223
Save 78.9%IGI | 4.29ct | Emerald | G | VS2 | Ideal
From $883
Compare at $4,180
Save 62.3%IGI | 4.21ct | Emerald | E | VS1 | Very Good
From $884
Compare at $2,343
Save 62.5%IGI | 4.23ct | Emerald | E | VS1 | Very Good
From $887
Compare at $2,364
Save 62.5%IGI | 4.23ct | Emerald | E | VS1 | Very Good
From $888
Compare at $2,365
Save 79.3%IGI | 4.27ct | Emerald | F | VS2 | Ideal
From $888
Compare at $4,300
Save 66%IGI | 4.28ct | Emerald | D | VS1 | Very Good
From $898
Compare at $2,639
Save 64.8%IGI | 4.21ct | Emerald | D | VS1 | Very Good
From $902
Compare at $2,560
Save 49.8%IGI | 4.22ct | Emerald | H | VS2 | Ideal
From $904
Compare at $1,801
Save 53.6%IGI | 4.23ct | Emerald | H | VVS2 | Ideal
From $910
Compare at $1,962
Save 12.8%IGI | 4.21ct | Emerald | G | VS1 | Good
From $912
Compare at $1,046
Save 35.8%IGI | 4.26ct | Emerald | G | SI1 | Ideal
From $926
Compare at $1,442
Save 12.8%IGI | 4.28ct | Emerald | G | VS1 | Good
From $927
Compare at $1,063
Save 27.1%IGI | 4.22ct | Emerald | E | VS1 | Very Good
From $935
Compare at $1,282
Save 63.5%IGI | 4.22ct | Emerald | D | VS1 | Ideal
From $948
Compare at $2,600
Save 62.5%IGI | 4.28ct | Emerald | E | VVS2 | Excellent
From $960
Compare at $2,560
Save 62.6%IGI | 4.24ct | Emerald | E | VVS2 | Excellent
From $963
Compare at $2,578
Save 60.3%IGI | 4.29ct | Emerald | E | VS1 | Good
From $970
Compare at $2,445
Save 74.2%IGI | 4.22ct | Emerald | G | VS2 | Ideal
From $993
Compare at $3,850
Save 53.4%IGI | 4.27ct | Emerald | G | VS1 | Very Good
From $996
Compare at $2,137
Save 72.4%IGI | 4.29ct | Emerald | FANCY | VS2 | Very Good
From $1,006
Compare at $3,642
Save 78.9%IGI | 4.21ct | Emerald | F | VS1 | Ideal
From $1,015
Compare at $4,800
Save 57.3%IGI | 4.22ct | Emerald | E | VS1 | Very Good
From $1,020
Compare at $2,390
Save 72.4%IGI | 4.29ct | Emerald | FANCY | VS2 | Very Good
From $1,025
Compare at $3,712
Save 57.5%IGI | 4.24ct | Emerald | E | VS1 | Very Good
From $1,025
Compare at $2,412
Save 66.9%IGI | 4.21ct | Emerald | D | VVS2 | Very Good
From $1,038
Compare at $3,134
Save 66.9%IGI | 4.21ct | Emerald | D | VVS2 | Very Good
From $1,038
Compare at $3,134
Save 67.1%IGI | 4.24ct | Emerald | D | VVS2 | Very Good
From $1,046
Compare at $3,176
Save 67.2%IGI | 4.25ct | Emerald | D | VVS2 | Very Good
From $1,048
Compare at $3,191
Save 67.2%IGI | 4.25ct | Emerald | D | VVS2 | Very Good
From $1,048
Compare at $3,191
Save 14.3%IGI | 4.21ct | Emerald | E | VS1 | Very Good
From $1,053
Compare at $1,228
Save 58.3%IGI | 4.22ct | Emerald | E | VVS2 | Very Good
From $1,054
Compare at $2,528
Save 79.1%IGI | 4.22ct | Emerald | D | VS2 | Ideal
From $1,063
Compare at $5,080
Save 14.2%IGI | 4.25ct | Emerald | E | VS1 | Good
From $1,063
Compare at $1,239
Save 67.2%IGI | 4.29ct | Emerald | D | VVS2 | Very Good
From $1,066
Compare at $3,251
Save 72.4%IGI | 4.26ct | Emerald | FANCY | VS1 | Very Good
From $1,075
Compare at $3,893
Save 14.3%IGI | 4.28ct | Emerald | F | VS2 | Very Good
From $1,080
Compare at $1,260
Save 74.8%IGI | 4.22ct | Emerald | D | VS1 | Very Good
From $1,082
Compare at $4,300
Save 13.6%IGI | 4.22ct | Emerald | F | VS1 | Good
From $1,103
Compare at $1,276
Save 38.6%IGI | 4.29ct | Emerald | F | VS2 | Ideal
From $1,105
Compare at $1,799
Entry pricing in this category starts around $563.
What to Know When Shopping for 4.2 Carat Emerald Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $40,645 or more.
- Focus on the 4Cs that matter most to you. Color and clarity grades drive price more than cut in many segments, but cut affects sparkle the most.
- The median price of $3,521 is a useful benchmark. If you see a deal significantly below this, verify the retailer's reputation and return policy.
- Consider eye-clean alternatives. Moving one clarity grade down (e.g., VS2 to SI1) can save 10-15% with no visible difference to the naked eye.
- Lab-grown diamonds offer excellent value. Ensure the stone comes with a GIA or IGI certificate confirming it is laboratory-grown.
- Check shipping, insurance, and return policies. The lowest sticker price is not always the best deal once you factor in total cost of purchase.
- Emerald cuts show clarity more readily due to their step-cut facets. Consider VS2 or better clarity for this shape.
Frequently Asked Questions
We currently track 155 comparable stones in this segment. Prices start around $563 and go up to $41,208.
Based on the latest market data, the average asking price is about $5,096 with a median around $3,521.
The observed spread is roughly $40,645 across tracked listings, which is about 98.6% from highest to lowest offer in this bucket.
We refresh pricing data daily so these pages stay current with market changes.
Based on completed market data, the fair market benchmark is $5,096. The median price is $3,521, so offers between the median and fair benchmark can be reasonable, while reputable listings below the median may be especially competitive.
We currently track this stone category across 10 online retailers, giving you a broad view of the competitive landscape.
For most buyers, color differences below G are hard to detect once set in a ring. Clarity grades of VS2 and above are typically eye-clean. Prioritize cut quality for maximum brilliance, then balance color and clarity based on your budget.
Retailer pricing strategies, overhead costs, and margin targets all contribute. The exact certified diamond can differ by $40,645 across sellers, which is why direct certified-diamond comparison is essential.
We match diamonds across retailers by their certification lab and certificate number. This means the prices you see are for the exact same physical diamond, not just stones with similar specs. It is a true apples-to-apples comparison.
Diamond prices fluctuate based on supply and demand. Our data refreshes regularly so you can track trends over time. Use the price range on this page as a benchmark and compare it to historical averages when available.
Diamond Terminology
- Carat
- A unit of weight for diamonds equal to 200 milligrams. Larger carat weights are exponentially rarer, which is why prices increase non-linearly with size.
- Cut
- Refers to how well a diamond's facets interact with light. Cut quality ranges from Ideal to Poor and is the single biggest factor affecting a diamond's brilliance.
- Color
- Grades a diamond's lack of color on a scale from D (colorless) to Z (light yellow). Grades D-F are considered colorless; G-J are near-colorless and offer good value.
- Clarity
- Measures the presence of internal inclusions or surface blemishes. Grades range from Flawless (FL) to Included (I3). Most inclusions in VS2 and above are invisible to the naked eye.
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