6.6 Carat Oval Lab Grown Diamond Prices Comparison
As of February 2026, 6.6 carat oval lab grown diamonds usually range from $1,166 to $43,680, with an average price of $2,919.In the last month, prices for these diamonds are down 2.7%.Compare 175 verified listings across 8 retailers tracked by CaratRadar.
6.6 Carat Oval Lab Grown Diamond Market Overview
CaratRadar currently tracks 175 verified 6.6-carat oval lab grown diamonds listed across 8 online retailers. Prices in this segment range from $1,166 to $43,680, with an average asking price of $2,919 and a median of $2,200.
The price spread of $42,514 (97.3% 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.
175 diamonds tracked in this segment
Price range: $1,166 to $43,680
Average price: $2,919
Median price: $2,200
Available across 8 retailers
Savings potential: up to 97.3%
Price Range Overview
As of Feb 28, 2026Real market range for this carat, shape, and diamond type.
175
$1,166
$2,919
$2,200
$43,680
Price History
Price Comparison Matrix
Live Listings
See all listingsCompare current retailer offers for this exact segment and open any listing for full details.
GIASave 72.5%6.55ct | Oval | F | VS2 | Ideal
From $3,984
Compare at $14,470
IGISave 81.2%6.55ct | Oval | E | VS1 | Very Good
From $2,494
Compare at $13,290
IGISave 81.5%6.55ct | Oval | E | VS1 | Very Good
From $2,464
Compare at $13,290
IGISave 61.2%6.55ct | Oval | E | VVS2 | Very Good
From $1,887
Compare at $4,866
IGISave 50.4%6.55ct | Oval | E | VVS2 | Very Good
From $2,250
Compare at $4,538
IGISave 86%6.55ct | Oval | F | VVS2 | Excellent
From $2,148
Compare at $15,350
IGISave 85.2%6.55ct | Oval | D | VVS2 | Very Good
From $4,385
Compare at $29,620
IGISave 81.5%6.55ct | Oval | E | VS1 | Very Good
From $2,464
Compare at $13,290
IGISave 22.3%6.55ct | Oval | D | IF | Ideal
From $43,680
Compare at $56,194
IGISave 50.4%6.55ct | Oval | E | VS1 | Very Good
From $2,213
Compare at $4,463
IGISave 50.4%6.55ct | Oval | E | VS1 | Very Good
From $2,213
Compare at $4,463
IGISave 73%6.55ct | Oval | E | VS1 | Excellent
From $3,138
Compare at $11,620
IGISave 61.2%6.55ct | Oval | E | VVS2 | Very Good
From $1,887
Compare at $4,866
IGISave 26.5%6.55ct | Oval | F | VS1 | Very Good
From $1,832
Compare at $2,493
IGISave 88.9%6.55ct | Oval | E | VVS2 | Excellent
From $2,187
Compare at $19,700
IGISave 88.9%6.55ct | Oval | E | VVS2 | Excellent
From $2,187
Compare at $19,750
IGISave 81.2%6.55ct | Oval | F | VS1 | Very Good
From $2,441
Compare at $13,010
IGISave 14.5%6.55ct | Oval | F | VVS2 | Very Good
From $2,194
Compare at $2,565
IGISave 58%6.55ct | Oval | E | VVS2 | Very Good
From $1,904
Compare at $4,538
IGISave 50.4%6.55ct | Oval | E | VVS2 | Excellent
From $2,250
Compare at $4,538
IGISave 11.9%6.55ct | Oval | E | VVS2 | Excellent
From $2,324
Compare at $2,637
IGISave 87.8%6.56ct | Oval | G | VS2 | Ideal
From $1,571
Compare at $12,830
IGISave 82.3%6.56ct | Oval | F | VS1 | Excellent
From $1,758
Compare at $9,930
IGISave 85.9%6.56ct | Oval | E | VS1 | Very Good
From $2,354
Compare at $16,720
IGISave 75.8%6.56ct | Oval | E | VVS2 | Ideal
From $6,268
Compare at $25,890
IGISave 86.8%6.56ct | Oval | E | VVS2 | Ideal
From $2,258
Compare at $17,130
IGISave 52.1%6.56ct | Oval | G | VS2 | Ideal
From $1,807
Compare at $3,775
IGISave 82.8%6.56ct | Oval | E | VVS1 | Ideal
From $7,013
Compare at $40,730
IGISave 78%6.56ct | Oval | D | VS2 | Ideal
From $3,285
Compare at $14,940
IGISave 77.9%6.56ct | Oval | E | VS1 | Ideal
From $2,330
Compare at $10,550
6.56ct | Oval | F | VVS2 | Very Good
From $2,146
Compare at $15,260
IGISave 87.1%6.56ct | Oval | E | VS2 | Very Good
From $1,779
Compare at $13,760
IGISave 52.8%6.56ct | Oval | E | VVS2 | Excellent
From $2,156
Compare at $4,572
IGISave 88.9%6.56ct | Oval | E | VVS2 | Excellent
From $2,190
Compare at $19,780
IGISave 83.5%6.56ct | Oval | G | VVS2 | Excellent
From $1,729
Compare at $10,490
GIASave 73.7%6.56ct | Oval | E | VVS2 | Excellent
From $6,946
Compare at $26,370
IGISave 82.3%6.56ct | Oval | D | VVS2 | Ideal
From $5,459
Compare at $30,880
IGISave 60.8%6.56ct | Oval | FANCY | VS1 | Very Good
From $6,233
Compare at $15,890
IGISave 81.2%6.56ct | Oval | E | VVS2 | Very Good
From $2,561
Compare at $13,650
IGISave 77.9%6.56ct | Oval | E | VVS2 | Ideal
From $2,371
Compare at $10,740
IGISave 77.9%6.56ct | Oval | E | VVS2 | Very Good
From $2,371
Compare at $10,740
IGISave 87.3%6.57ct | Oval | G | VS1 | Very Good
From $1,738
Compare at $13,648
IGISave 82.4%6.57ct | Oval | E | VVS2 | Excellent
From $2,162
Compare at $12,320
IGISave 88.9%6.57ct | Oval | E | VVS2 | Excellent
From $2,194
Compare at $19,810
IGISave 48.6%6.57ct | Oval | F | VS1 | Very Good
From $2,204
Compare at $4,288
IGISave 89.2%6.57ct | Oval | E | VS1 | Excellent
From $1,821
Compare at $16,860
6.57ct | Oval | E | VS1 | Excellent
From $2,104
Compare at $19,470
IGISave 77.9%6.57ct | Oval | E | VS1 | Ideal
From $2,334
Compare at $10,570
IGISave 52.1%6.57ct | Oval | F | VS1 | Excellent
From $2,204
Compare at $4,599
IGISave 50.4%6.57ct | Oval | E | VVS2 | Excellent
From $2,271
Compare at $4,580
Entry pricing in this category starts around $1,166.
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 $42,514 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 $2,200 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 175 comparable stones in this segment. Prices start around $1,166 and go up to $43,680.
Based on the latest market data, the average asking price is about $2,919 with a median around $2,200.
The observed spread is roughly $42,514 across tracked listings, which is about 97.3% 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 $2,200, 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 8 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 $42,514 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 6.6 carat Oval diamonds.