15 Carat Oval Lab Grown Diamond Prices Comparison
As of April 2026, 15 carat oval lab grown diamonds usually range from $4,330 to $89,830, with an average price of $18,299.In the last month, prices for these diamonds are down 5.5%.Compare 70 verified listings across 4 retailers tracked by CaratRadar.
15 Carat Oval Lab Grown Diamond Market Overview
CaratRadar currently tracks 70 verified 15-carat oval lab grown diamonds listed across 4 online retailers. Prices in this segment range from $4,330 to $89,830, with an average asking price of $18,299 and a median of $13,820.
The price spread of $85,500 (95.2% 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.
70 diamonds tracked in this segment
Price range: $4,330 to $89,830
Average price: $18,299
Median price: $13,820
Available across 4 retailers
Savings potential: up to 95.2%
Price Range Overview
As of Apr 17, 2026Real market range for this carat, shape, and diamond type.
70
$4,330
$18,299
$13,820
$89,830
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 52.6%GIA | 15ct | Oval | E | VS1 | Excellent
From $42,660
Compare at $90,000
Save 72.4%IGI | 15ct | Oval | G | VS2 | Ideal
From $7,230
Compare at $26,209
Save 53.7%IGI | 15ct | Oval | G | VVS2 | Excellent
From $5,594
Compare at $12,081
Save 83.8%IGI | 15ct | Oval | F | VVS2 | Very Good
From $6,441
Compare at $39,675
Save 80.1%IGI | 15ct | Oval | F | VS1 | Very Good
From $6,300
Compare at $31,720
Save 77.9%IGI | 15ct | Oval | F | VS2 | Ideal
From $6,000
Compare at $27,190
Save 78.5%IGI | 15ct | Oval | F | VS1 | Ideal
From $6,821
Compare at $31,720
Save 79.4%IGI | 15ct | Oval | F | VS1 | Very Good
From $6,540
Compare at $31,720
Save 74.8%IGI | 15.01ct | Oval | G | VS1 | Very Good
From $5,628
Compare at $22,292
Save 78.4%IGI | 15.01ct | Oval | G | VS2 | Very Good
From $5,313
Compare at $24,580
Save 77.9%IGI | 15.01ct | Oval | F | VS1 | Ideal
From $7,002
Compare at $31,740
Save 75.7%IGI | 15.01ct | Oval | E | VVS2 | Ideal
From $9,468
Compare at $39,030
Save 67.5%IGI | 15.02ct | Oval | F | VVS2 | Excellent
From $11,528
Compare at $35,420
Save 84.7%IGI | 15.02ct | Oval | I | VVS2 | Ideal
From $5,746
Compare at $37,550
IGI | 15.02ct | Oval | G | VVS2 | Ideal
From $33,640
Compare at $35,787
Save 47.5%IGI | 15.02ct | Oval | G | VVS2 | Excellent
From $5,381
Compare at $10,250
Save 80.2%IGI | 15.02ct | Oval | F | VVS2 | Very Good
From $6,921
Compare at $34,980
Save 75.5%IGI | 15.02ct | Oval | F | VS2 | Ideal
From $6,683
Compare at $27,230
IGI | 15.02ct | Oval | FANCY | VS2 | Ideal
From $13,499
Compare at $23,431
Save 77.9%IGI | 15.02ct | Oval | F | VS1 | Ideal
From $7,007
Compare at $31,760
Save 77.2%IGI | 15.03ct | Oval | F | VVS2 | Ideal
From $7,813
Compare at $34,260
Save 80%IGI | 15.03ct | Oval | F | VVS2 | Ideal
From $7,018
Compare at $35,010
Save 76.2%IGI | 15.03ct | Oval | E | VS2 | Good
From $7,507
Compare at $31,570
Save 76.2%IGI | 15.03ct | Oval | E | VS1 | Ideal
From $9,186
Compare at $38,530
Save 82%IGI | 15.04ct | Oval | G | VVS2 | Ideal
From $5,655
Compare at $31,490
Save 45.7%IGI | 15.04ct | Oval | FANCY | VS1 | Excellent
From $11,345
Compare at $20,903
Save 66.4%IGI | 15.04ct | Oval | F | VVS2 | Ideal
From $13,482
Compare at $40,160
Save 83.8%IGI | 15.04ct | Oval | F | VVS2 | Ideal
From $6,457
Compare at $39,781
Save 39.5%IGI | 15.04ct | Oval | E | VVS2 | Excellent
From $8,565
Compare at $14,168
Save 81.5%IGI | 15.04ct | Oval | F | VVS2 | Good
From $6,496
Compare at $35,030
Save 80%IGI | 15.04ct | Oval | G | VS1 | Ideal
From $5,482
Compare at $27,350
Save 80%IGI | 15.04ct | Oval | F | VVS2 | Ideal
From $7,023
Compare at $35,030
Save 57.1%IGI | 15.04ct | Oval | F | VS2 | Very Good
From $4,330
Compare at $10,083
Save 77.9%IGI | 15.04ct | Oval | F | VS1 | Ideal
From $7,016
Compare at $31,810
Save 70.4%IGI | 15.05ct | Oval | I | SI1 | Ideal
From $5,066
Compare at $17,130
Save 45.3%IGI | 15.05ct | Oval | G | VS2 | Ideal
From $13,594
Compare at $24,850
Save 80.9%IGI | 15.05ct | Oval | F | VVS2 | Very Good
From $6,696
Compare at $35,050
Save 81.8%IGI | 15.05ct | Oval | G | VVS2 | Ideal
From $6,284
Compare at $34,590
Save 73.6%IGI | 15.05ct | Oval | F | VVS2 | Excellent
From $6,501
Compare at $24,623
Save 47.5%IGI | 15.05ct | Oval | G | VS2 | Excellent
From $5,674
Compare at $10,807
Save 76.6%IGI | 15.05ct | Oval | E | VVS2 | Excellent
From $9,140
Compare at $39,140
Save 75.9%IGI | 15.05ct | Oval | E | VVS2 | Very Good
From $9,441
Compare at $39,140
Save 47.5%IGI | 15.05ct | Oval | G | VVS2 | Excellent
From $5,392
Compare at $10,269
Save 78.5%IGI | 15.05ct | Oval | F | VS1 | Ideal
From $6,843
Compare at $31,830
Save 81.1%IGI | 15.05ct | Oval | F | VVS2 | Very Good
From $6,618
Compare at $35,050
Save 79.9%IGI | 15.05ct | Oval | F | VVS2 | Good
From $7,028
Compare at $35,050
Save 77.9%IGI | 15.05ct | Oval | F | VS1 | Ideal
From $7,021
Compare at $31,830
Save 82.1%IGI | 15.06ct | Oval | G | VVS2 | Ideal
From $5,632
Compare at $31,540
Save 67.4%IGI | 15.06ct | Oval | F | VVS2 | Excellent
From $11,559
Compare at $35,510
Save 42.4%IGI | 15.06ct | Oval | E | VVS2 | Excellent
From $8,241
Compare at $14,302
Entry pricing in this category starts around $4,330.
What to Know When Shopping for 15 Carat Oval Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $85,500 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 $13,820 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 70 comparable stones in this segment. Prices start around $4,330 and go up to $89,830.
Based on the latest market data, the average asking price is about $18,299 with a median around $13,820.
The observed spread is roughly $85,500 across tracked listings, which is about 95.2% 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 $13,820, 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 4 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 $85,500 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.
15.1 Carat Oval Lab Grown Diamond Prices
15.2 Carat Oval Lab Grown Diamond Prices
14.5 Carat Oval Lab Grown Diamond Prices
15.6 Carat Oval Lab Grown Diamond Prices
14.1 Carat Oval Lab Grown Diamond Prices
14 Carat Oval Lab Grown Diamond Prices
16 Carat Oval Lab Grown Diamond Prices
15 Carat Radiant Lab Grown Diamond Prices
15 Carat Emerald Lab Grown Diamond Prices
15 Carat Cushion Lab Grown Diamond Prices
15 Carat Pear Lab Grown Diamond Prices
15 Carat Round Lab Grown Diamond Prices
Tracking Lab Grown inventory for 15 carat Oval diamonds.