6.6 Carat Oval Lab Grown Diamond Prices Comparison
As of April 2026, 6.6 carat oval lab grown diamonds usually range from $1,235 to $28,159, with an average price of $5,266.In the last month, prices for these diamonds are down 1.5%.Compare 95 verified listings across 6 retailers tracked by CaratRadar.
6.6 Carat Oval Lab Grown Diamond Market Overview
CaratRadar currently tracks 95 verified 6.6-carat oval lab grown diamonds listed across 6 online retailers. Prices in this segment range from $1,235 to $28,159, with an average asking price of $5,266 and a median of $4,079.
The price spread of $26,924 (95.6% 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.
95 diamonds tracked in this segment
Price range: $1,235 to $28,159
Average price: $5,266
Median price: $4,079
Available across 6 retailers
Savings potential: up to 95.6%
Price Range Overview
As of Apr 14, 2026Real market range for this carat, shape, and diamond type.
95
$1,235
$5,266
$4,079
$28,159
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 82.7%IGI | 6.6ct | Oval | G | VS2 | Excellent
From $1,875
Compare at $10,860
Save 68%IGI | 6.6ct | Oval | F | IF | Ideal
From $24,980
Compare at $78,030
Save 47.2%IGI | 6.6ct | Oval | E | VVS2 | Ideal
From $9,050
Compare at $17,140
Save 64.1%IGI | 6.6ct | Oval | F | VVS2 | Excellent
From $2,107
Compare at $5,871
Save 52.2%IGI | 6.6ct | Oval | G | VS1 | Very Good
From $1,779
Compare at $3,718
Save 77.9%IGI | 6.6ct | Oval | E | VVS2 | Very Good
From $2,251
Compare at $10,200
Save 77.1%IGI | 6.6ct | Oval | E | VS2 | Very Good
From $2,259
Compare at $9,870
Save 72.9%IGI | 6.6ct | Oval | F | VS1 | Ideal
From $2,280
Compare at $8,410
Save 70.2%IGI | 6.6ct | Oval | F | VVS2 | Very Good
From $3,165
Compare at $10,610
Save 63.5%IGI | 6.6ct | Oval | F | VVS2 | Very Good
From $2,107
Compare at $5,766
Save 63.5%IGI | 6.6ct | Oval | E | VVS2 | Very Good
From $2,164
Compare at $5,923
Save 77.9%IGI | 6.6ct | Oval | E | VS2 | Ideal
From $2,200
Compare at $9,970
Save 48.6%IGI | 6.6ct | Oval | F | VVS2 | Very Good
From $2,107
Compare at $4,103
Save 82.7%IGI | 6.6ct | Oval | D | VS1 | Ideal
From $2,540
Compare at $14,700
Save 48.6%IGI | 6.6ct | Oval | E | VVS2 | Very Good
From $2,123
Compare at $4,133
Save 48.6%IGI | 6.6ct | Oval | E | VVS2 | Very Good
From $2,254
Compare at $4,383
Save 49.6%IGI | 6.6ct | Oval | E | VVS2 | Excellent
From $2,209
Compare at $4,383
Save 49.6%IGI | 6.6ct | Oval | E | VVS2 | Excellent
From $2,209
Compare at $4,383
Save 63.5%IGI | 6.6ct | Oval | E | VS1 | Very Good
From $2,192
Compare at $6,000
Save 63.5%IGI | 6.6ct | Oval | E | VS1 | Excellent
From $2,214
Compare at $6,061
Save 49.1%IGI | 6.6ct | Oval | E | VVS2 | Very Good
From $2,231
Compare at $4,383
Save 48.6%IGI | 6.6ct | Oval | E | VS1 | Excellent
From $2,214
Compare at $4,308
Save 63.5%IGI | 6.6ct | Oval | F | VVS2 | Excellent
From $2,194
Compare at $6,006
Save 48.6%IGI | 6.6ct | Oval | E | VS1 | Excellent
From $2,214
Compare at $4,308
Save 48.6%IGI | 6.6ct | Oval | E | VS1 | Very Good
From $2,214
Compare at $4,308
Save 48.6%IGI | 6.6ct | Oval | F | VVS2 | Very Good
From $2,194
Compare at $4,269
Save 63.5%IGI | 6.6ct | Oval | E | VS1 | Very Good
From $2,214
Compare at $6,061
Save 73.1%IGI | 6.6ct | Oval | G | VVS2 | Very Good
From $1,255
Compare at $4,664
Save 49.3%IGI | 6.6ct | Oval | E | VVS2 | Very Good
From $2,220
Compare at $4,383
Save 48.6%IGI | 6.6ct | Oval | F | VS1 | Very Good
From $2,174
Compare at $4,231
Save 48.7%IGI | 6.6ct | Oval | F | VVS2 | Very Good
From $2,048
Compare at $3,988
Save 74.1%IGI | 6.6ct | Oval | E | VVS2 | Very Good
From $1,570
Compare at $6,073
Save 86.8%IGI | 6.61ct | Oval | G | VVS2 | Excellent
From $1,839
Compare at $13,900
Save 83.6%IGI | 6.61ct | Oval | F | VS2 | Ideal
From $1,976
Compare at $12,040
Save 77.1%IGI | 6.61ct | Oval | G | VS1 | Ideal
From $2,158
Compare at $9,440
Save 77.1%IGI | 6.61ct | Oval | G | VS1 | Ideal
From $2,051
Compare at $8,970
Save 74.7%IGI | 6.61ct | Oval | G | VS1 | Ideal
From $1,976
Compare at $7,820
Save 71.4%IGI | 6.61ct | Oval | E | VVS2 | Fair
From $2,695
Compare at $9,440
Save 87.3%IGI | 6.61ct | Oval | E | VS1 | Excellent
From $2,153
Compare at $16,940
Save 86.7%IGI | 6.61ct | Oval | E | VS1 | Very Good
From $2,246
Compare at $16,850
Save 61.9%IGI | 6.61ct | Oval | G | VS1 | Ideal
From $1,801
Compare at $4,725
Save 71.4%IGI | 6.61ct | Oval | E | VS1 | Very Good
From $3,206
Compare at $11,200
Save 77.1%IGI | 6.61ct | Oval | E | VS1 | Ideal
From $2,244
Compare at $9,800
Save 83.6%IGI | 6.61ct | Oval | F | VS1 | Very Good
From $2,284
Compare at $13,960
Save 41.3%IGI | 6.61ct | Oval | E | VVS2 | Very Good
From $2,354
Compare at $4,012
Save 82%IGI | 6.62ct | Oval | D | VVS2 | Ideal
From $8,340
Compare at $46,400
Save 86.9%IGI | 6.62ct | Oval | F | VVS2 | Excellent
From $2,035
Compare at $15,490
Save 77.1%IGI | 6.62ct | Oval | G | VS1 | Ideal
From $2,161
Compare at $9,450
IGI | 6.62ct | Oval | FANCY | VS1 | Very Good
From $5,578
Compare at $8,605
Save 46.1%IGI | 6.62ct | Oval | F | VS1 | Excellent
From $3,740
Compare at $6,942
Entry pricing in this category starts around $1,235.
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 $26,924 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 $4,079 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 95 comparable stones in this segment. Prices start around $1,235 and go up to $28,159.
Based on the latest market data, the average asking price is about $5,266 with a median around $4,079.
The observed spread is roughly $26,924 across tracked listings, which is about 95.6% 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 $4,079, 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 6 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 $26,924 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.
Related Price Categories
Explore adjacent carat ranges and shapes to compare market shifts.
6.5 Carat Oval Lab Grown Diamond Prices
6.4 Carat Oval Lab Grown Diamond Prices
6.3 Carat Oval Lab Grown Diamond Prices
6.7 Carat Oval Lab Grown Diamond Prices
6.2 Carat Oval Lab Grown Diamond Prices
6.8 Carat Oval Lab Grown Diamond Prices
6.1 Carat Oval Lab Grown Diamond Prices
6.6 Carat Round Lab Grown Diamond Prices
6.6 Carat Emerald Lab Grown Diamond Prices
6.6 Carat Pear Lab Grown Diamond Prices
6.6 Carat Radiant Lab Grown Diamond Prices
6.6 Carat Cushion Lab Grown Diamond Prices
Tracking Lab Grown inventory for 6.6 carat Oval diamonds.