5.1 Carat Oval Lab Grown Diamond Prices Comparison
As of February 2026, 5.1 carat oval lab grown diamonds usually range from $871 to $61,870, with an average price of $2,022.In the last month, prices for these diamonds are down 1.2%.Compare 3,035 verified listings across 11 retailers tracked by CaratRadar.
5.1 Carat Oval Lab Grown Diamond Market Overview
CaratRadar currently tracks 3,035 verified 5.1-carat oval lab grown diamonds listed across 11 online retailers. Prices in this segment range from $871 to $61,870, with an average asking price of $2,022 and a median of $1,468.
The price spread of $60,999 (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.
3,035 diamonds tracked in this segment
Price range: $871 to $61,870
Average price: $2,022
Median price: $1,468
Available across 11 retailers
Savings potential: up to 98.6%
Price Range Overview
As of Feb 28, 2026Real market range for this carat, shape, and diamond type.
3,035
$871
$2,022
$1,468
$61,870
Price History
Price Comparison Matrix
Live Listings
See all listingsCompare current retailer offers for this exact segment and open any listing for full details.
IGISave 85.1%5.05ct | Oval | G | VS2 | Ideal
From $1,483
Compare at $9,920
IGISave 44.1%5.05ct | Oval | H | VVS2 | Ideal
From $1,886
Compare at $3,371
IGI5.05ct | Oval | H | VS1 | Ideal
From $1,799
Compare at $1,979
IGISave 84.1%5.05ct | Oval | H | VS1 | Ideal
From $1,079
Compare at $6,790
IGISave 85.3%5.05ct | Oval | G | VS2 | Ideal
From $1,483
Compare at $10,110
GIASave 51.6%5.05ct | Oval | D | IF | Ideal
From $18,665
Compare at $38,552
GCALSave 71.7%5.05ct | Oval | E | VS2 | Excellent
From $3,462
Compare at $12,250
GIASave 68.9%5.05ct | Oval | E | VVS1 | Excellent
From $6,975
Compare at $22,410
GIASave 19.1%5.05ct | Oval | E | IF | Ideal
From $16,698
Compare at $20,633
GIASave 70.3%5.05ct | Oval | D | VVS1 | Excellent
From $9,499
Compare at $31,946
IGISave 63.3%5.05ct | Oval | H | VS2 | Ideal
From $1,104
Compare at $3,006
IGISave 39.2%5.05ct | Oval | G | VS1 | Ideal
From $1,266
Compare at $2,084
IGISave 40.7%5.05ct | Oval | G | VS1 | Ideal
From $1,236
Compare at $2,084
5.05ct | Oval | H | VS1 | Ideal
From $1,032
Compare at $4,930
IGISave 80.7%5.05ct | Oval | G | VVS2 | Very Good
From $1,688
Compare at $8,730
IGISave 68%5.05ct | Oval | F | SI1 | Ideal
From $2,011
Compare at $6,280
IGISave 53%5.05ct | Oval | H | VS1 | Ideal
From $1,145
Compare at $2,433
IGISave 86.2%5.05ct | Oval | F | SI1 | Ideal
From $1,200
Compare at $8,670
IGISave 40.7%5.05ct | Oval | G | VS1 | Ideal
From $1,236
Compare at $2,084
IGISave 79.6%5.05ct | Oval | G | VS1 | Excellent
From $1,170
Compare at $5,740
IGISave 88.9%5.05ct | Oval | G | VS1 | Ideal
From $1,236
Compare at $11,100
IGISave 62.3%5.05ct | Oval | F | SI1 | Ideal
From $931
Compare at $2,466
IGISave 71.1%5.05ct | Oval | E | SI1 | Ideal
From $1,559
Compare at $5,400
IGISave 86.4%5.05ct | Oval | D | VS1 | Excellent
From $1,321
Compare at $9,710
IGISave 66.4%5.05ct | Oval | F | SI1 | Ideal
From $890
Compare at $2,650
IGISave 62.4%5.05ct | Oval | E | SI1 | Ideal
From $941
Compare at $2,499
IGISave 83%5.05ct | Oval | E | VS1 | Ideal
From $1,068
Compare at $6,290
IGISave 83.2%5.05ct | Oval | E | VS1 | Ideal
From $1,038
Compare at $6,170
IGISave 83.2%5.05ct | Oval | E | VS1 | Ideal
From $1,038
Compare at $6,170
IGISave 83.3%5.05ct | Oval | E | VVS2 | Ideal
From $1,103
Compare at $6,600
IGISave 84.4%5.05ct | Oval | FANCY | VVS2 | Very Good
From $1,800
Compare at $11,524
IGISave 83.3%5.05ct | Oval | E | VVS2 | Ideal
From $1,103
Compare at $6,600
IGISave 83.3%5.05ct | Oval | E | VVS2 | Ideal
From $1,103
Compare at $6,600
IGISave 75.9%5.05ct | Oval | E | VS1 | Ideal
From $1,443
Compare at $5,980
IGISave 91.8%5.05ct | Oval | E | VS1 | Ideal
From $1,038
Compare at $12,610
IGISave 83.3%5.05ct | Oval | E | VVS2 | Ideal
From $1,111
Compare at $6,660
IGISave 79.3%5.05ct | Oval | G | SI1 | Ideal
From $961
Compare at $4,630
IGISave 82.7%5.05ct | Oval | E | VS1 | Ideal
From $1,068
Compare at $6,170
IGISave 76.6%5.05ct | Oval | E | VS1 | Ideal
From $1,443
Compare at $6,170
IGISave 62.3%5.05ct | Oval | F | SI1 | Ideal
From $931
Compare at $2,466
IGISave 83%5.05ct | Oval | E | VS1 | Ideal
From $1,060
Compare at $6,230
IGISave 83.9%5.05ct | Oval | D | VVS2 | Ideal
From $1,298
Compare at $8,070
IGISave 83.2%5.05ct | Oval | D | VS1 | Ideal
From $1,119
Compare at $6,660
IGISave 83.3%5.05ct | Oval | E | VVS2 | Ideal
From $1,111
Compare at $6,660
IGISave 83.6%5.05ct | Oval | E | VVS2 | Ideal
From $1,149
Compare at $7,030
IGISave 83.2%5.05ct | Oval | E | VS1 | Ideal
From $1,038
Compare at $6,170
IGISave 76.6%5.05ct | Oval | E | VS1 | Ideal
From $1,443
Compare at $6,170
IGISave 42.8%5.05ct | Oval | D | SI1 | Ideal
From $971
Compare at $1,697
IGISave 83.2%5.05ct | Oval | E | VS1 | Ideal
From $1,046
Compare at $6,230
IGISave 83.5%5.05ct | Oval | E | VVS2 | Ideal
From $1,158
Compare at $7,030
Entry pricing in this category starts around $871.
What to Know When Shopping for 5.1 Carat Oval Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $60,999 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 $1,468 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.
- Oval diamonds can appear larger than rounds of the same carat weight due to their elongated face-up area. Watch for the bow-tie effect in lower-quality cuts.
Frequently Asked Questions
We currently track 3,035 comparable stones in this segment. Prices start around $871 and go up to $61,870.
Based on the latest market data, the average asking price is about $2,022 with a median around $1,468.
The observed spread is roughly $60,999 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 our data, the median price is $1,468, which represents the midpoint of the market. Anything below this figure from a reputable retailer is a solid deal.
We currently track this stone category across 11 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 $60,999 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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Tracking Lab Grown inventory for 5.1 carat Oval diamonds.