6.6 Carat Oval Lab Grown Diamond Prices Comparison
As of May 2026, 6.6 carat oval lab grown diamonds usually range from $1,065 to $26,007, with an average price of $4,873.In the last month, prices for these diamonds are down 4.8%.Compare 32 verified listings across 5 retailers tracked by CaratRadar.
6.6 Carat Oval Lab Grown Diamond Market Overview
CaratRadar currently tracks 32 verified 6.6-carat oval lab grown diamonds listed across 5 online retailers. Prices in this segment range from $1,065 to $26,007, with an average asking price of $4,873 and a median of $3,682.
The price spread of $24,942 (95.9% 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.
32 diamonds tracked in this segment
Price range: $1,065 to $26,007
Average price: $4,873
Median price: $3,682
Available across 5 retailers
Savings potential: up to 95.9%
Price Range Overview
As of May 29, 2026Real market range for this carat, shape, and diamond type.
32
$1,065
$4,873
$3,682
$26,007
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 64.1%IGI | 6.6ct | Oval | F | VVS2 | Very Good
From $1,332
Compare at $3,709
Save 63.7%IGI | 6.6ct | Oval | F | VVS2 | Very Good
From $1,336
Compare at $3,681
Save 28.3%IGI | 6.6ct | Oval | G | VVS2 | Very Good
From $1,388
Compare at $1,936
Save 75.3%IGI | 6.61ct | Oval | F | VVS2 | Very Good
From $1,402
Compare at $5,670
Save 63.4%IGI | 6.6ct | Oval | E | VVS2 | Very Good
From $1,439
Compare at $3,929
Save 67.9%IGI | 6.68ct | Oval | E | VVS2 | Very Good
From $1,469
Compare at $4,574
Save 67.9%IGI | 6.66ct | Oval | F | VVS2 | Very Good
From $1,516
Compare at $4,719
Save 66.5%IGI | 6.66ct | Oval | E | VVS2 | Ideal
From $1,530
Compare at $4,562
Save 59.7%IGI | 6.6ct | Oval | F | VS1 | Excellent
From $1,535
Compare at $3,811
Save 56.1%IGI | 6.6ct | Oval | F | VVS2 | Excellent
From $1,634
Compare at $3,719
Save 71.2%IGI | 6.64ct | Oval | FANCY | VS2 | Good
From $1,699
Compare at $5,906
Save 50.1%IGI | 6.61ct | Oval | G | VS1 | Ideal
From $1,766
Compare at $3,541
Save 72.9%IGI | 6.7ct | Oval | FANCY | VVS2 | Good
From $1,838
Compare at $6,772
Save 18%IGI | 6.62ct | Oval | F | VVS2 | Very Good
From $1,928
Compare at $2,350
Save 18%IGI | 6.6ct | Oval | F | VVS2 | Very Good
From $1,977
Compare at $2,412
Save 18%IGI | 6.6ct | Oval | F | VVS2 | Excellent
From $1,977
Compare at $2,412
Save 17.3%IGI | 6.6ct | Oval | E | VVS2 | Very Good
From $2,014
Compare at $2,434
Save 17.3%IGI | 6.6ct | Oval | E | VVS2 | Very Good
From $2,076
Compare at $2,509
Save 38.1%IGI | 6.65ct | Oval | G | SI1 | Ideal
From $2,463
Compare at $3,976
Save 38.5%IGI | 6.62ct | Oval | F | VS1 | Excellent
From $2,568
Compare at $4,179
Save 69.6%IGI | 6.6ct | Oval | F | VS1 | Ideal
From $2,745
Compare at $9,020
Save 77%IGI | 6.64ct | Oval | F | VS2 | Ideal
From $2,761
Compare at $12,020
Save 71.5%IGI | 6.65ct | Oval | F | VS1 | Excellent
From $2,766
Compare at $9,690
Save 71.8%IGI | 6.6ct | Oval | F | VVS2 | Very Good
From $2,993
Compare at $10,610
Save 71.7%IGI | 6.63ct | Oval | F | VVS2 | Very Good
From $3,018
Compare at $10,660
Save 71.7%IGI | 6.63ct | Oval | F | VVS2 | Very Good
From $3,018
Compare at $10,660
Save 71%IGI | 6.64ct | Oval | F | VS1 | Very Good
From $3,094
Compare at $10,680
Save 66.7%IGI | 6.63ct | Oval | FANCY | VS2 | Good
From $3,548
Compare at $10,669
Save 66.4%IGI | 6.67ct | Oval | FANCY | VVS2 | Good
From $4,628
Compare at $13,773
Save 70.4%IGI | 6.68ct | Oval | E | VS1 | Very Good
From $5,692
Compare at $19,218
Save 76.7%IGI | 6.69ct | Oval | FANCY | VVS2 | Ideal
From $6,763
Compare at $29,050
Save 44.8%IGI | 6.65ct | Oval | D | VVS1 | Ideal
From $13,987
Compare at $25,344
Entry pricing in this category starts around $1,065.
What to Know When Shopping for 6.6 Carat Oval Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $24,942 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 $3,682 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 32 comparable stones in this segment. Prices start around $1,065 and go up to $26,007.
Based on the latest market data, the average asking price is about $4,873 with a median around $3,682.
The observed spread is roughly $24,942 across tracked listings, which is about 95.9% 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 $4,873. The median price is $3,682, 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 5 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 $24,942 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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