3.5 Carat Princess Lab Grown Diamond Prices Comparison
As of October 2026, 3.5 carat princess lab grown diamonds in the 3.50–3.99 carat benchmark range usually range from $457 to $29,363, with an average price of $2,943.In the last month, prices for these diamonds are down 1.6%.Compare 673 verified listings across 13 retailers tracked by CaratRadar.
3.5 Carat Princess Lab Grown Diamond Market Overview
CaratRadar currently tracks 673 verified 3.5-carat princess lab grown diamonds in the 3.50–3.99 carat benchmark range, listed across 13 online retailers. Prices in this segment range from $457 to $29,363, with an average asking price of $2,943 and a median of $2,073.
The price spread of $28,906 (98.4% 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 use the same benchmark range throughout the page and 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.
673 diamonds tracked in the 3.50–3.99 carat benchmark
Price range: $457 to $29,363
Average price: $2,943
Median price: $2,073
Available across 13 retailers
Savings potential: up to 98.4%
Price Range Overview
As of Oct 14, 2026Real market range for this carat, shape, and diamond type.
673
$457
$2,943
$2,073
$29,363
Price History
Price Comparison Matrix
Live Listings
See all listingsCompare current retailer offers in the same benchmark range and open any listing for full details.
Save 73.5%IGI | 3.53ct | Princess | G | VVS2 | Very Good
From $457
Compare at $1,727
Save 18.3%IGI | 3.6ct | Princess | K | VS1 | Good
From $534
Compare at $654
Save 73.3%IGI | 3.54ct | Princess | H | VS2 | Very Good
From $537
Compare at $2,011
Save 73.3%IGI | 3.5ct | Princess | G | VVS2 | Very Good
From $537
Compare at $2,011
Save 46.3%IGI | 3.7ct | Princess | G | VS1 | Very Good
From $542
Compare at $1,010
Save 73.3%IGI | 3.52ct | Princess | H | VS2 | Ideal
From $547
Compare at $2,046
Save 73.3%IGI | 3.53ct | Princess | H | VS2 | Ideal
From $548
Compare at $2,051
Save 73.3%IGI | 3.62ct | Princess | G | VS1 | Ideal
From $553
Compare at $2,069
Save 73.3%IGI | 3.67ct | Princess | H | VS1 | Ideal
From $584
Compare at $2,185
Save 73.3%IGI | 3.67ct | Princess | E | VS2 | Very Good
From $584
Compare at $2,187
Save 73.3%IGI | 3.58ct | Princess | F | VS2 | Ideal
From $591
Compare at $2,211
Save 79.5%IGI | 3.5ct | Princess | G | VS2 | Ideal
From $592
Compare at $2,890
Save 72%IGI | 3.71ct | Princess | K | VS1 | Ideal
From $596
Compare at $2,126
Save 73.3%IGI | 3.61ct | Princess | G | VS1 | Very Good
From $602
Compare at $2,254
Save 73.3%IGI | 3.62ct | Princess | G | VS1 | Very Good
From $604
Compare at $2,260
Save 73.3%IGI | 3.63ct | Princess | G | VS1 | Excellent
From $605
Compare at $2,265
Save 73.3%IGI | 3.64ct | Princess | G | VS1 | Ideal
From $614
Compare at $2,297
Save 73.3%IGI | 3.63ct | Princess | G | VS1 | Very Good
From $616
Compare at $2,304
Save 78.7%IGI | 3.54ct | Princess | H | VVS2 | Excellent
From $624
Compare at $2,930
Save 73.1%IGI | 3.64ct | Princess | F | VS1 | Ideal
From $627
Compare at $2,328
Save 73%IGI | 3.78ct | Princess | G | VVS2 | Good
From $629
Compare at $2,333
Save 73.1%IGI | 3.53ct | Princess | E | VS1 | Very Good
From $629
Compare at $2,335
Save 73%IGI | 3.52ct | Princess | G | VVS2 | Excellent
From $634
Compare at $2,352
Save 38%IGI | 3.83ct | Princess | FANCY | SI2 | Very Good
From $666
Compare at $1,075
Save 69%IGI | 3.99ct | Princess | E | VS2 | Very Good
From $669
Compare at $2,155
Save 79.2%IGI | 3.92ct | Princess | G | VS2 | Excellent
From $673
Compare at $3,230
Save 69.6%IGI | 3.52ct | Princess | E | VS1 | Excellent
From $674
Compare at $2,219
Save 79.2%IGI | 3.93ct | Princess | G | VS2 | Excellent
From $675
Compare at $3,240
Save 66%IGI | 3.55ct | Princess | H | VS2 | Ideal
From $676
Compare at $1,987
Save 68.1%IGI | 3.7ct | Princess | F | VS1 | Very Good
From $677
Compare at $2,125
Save 79.2%IGI | 3.71ct | Princess | G | VS1 | Ideal
From $689
Compare at $3,310
Save 68.9%IGI | 3.5ct | Princess | E | VVS2 | Ideal
From $690
Compare at $2,221
Save 76.1%IGI | 3.5ct | Princess | G | VS2 | Very Good
From $691
Compare at $2,890
Save 68.9%IGI | 3.51ct | Princess | D | VS1 | Ideal
From $692
Compare at $2,227
Save 69.6%IGI | 3.54ct | Princess | G | VS2 | Excellent
From $697
Compare at $2,289
Save 54.9%IGI | 3.86ct | Princess | E | VS1 | Ideal
From $697
Compare at $1,545
Save 70.8%IGI | 3.58ct | Princess | D | VS1 | Good
From $699
Compare at $2,396
Save 68.9%IGI | 3.52ct | Princess | D | VS1 | Ideal
From $700
Compare at $2,254
Save 70.9%IGI | 3.59ct | Princess | D | VS1 | Very Good
From $700
Compare at $2,403
Save 59.5%IGI | 3.74ct | Princess | E | VS1 | Very Good
From $702
Compare at $1,732
Save 69.8%IGI | 3.78ct | Princess | E | VVS2 | Ideal
From $702
Compare at $2,324
Save 26.6%IGI | 3.51ct | Princess | G | VS1 | Ideal
From $708
Compare at $965
Save 76.2%IGI | 3.62ct | Princess | G | VS2 | Ideal
From $712
Compare at $2,990
Save 71.6%IGI | 3.84ct | Princess | E | VVS2 | Ideal
From $712
Compare at $2,503
Save 45.6%IGI | 3.53ct | Princess | F | VS2 | Ideal
From $713
Compare at $1,311
Save 68.9%IGI | 3.58ct | Princess | E | VS1 | Very Good
From $717
Compare at $2,307
Save 69%IGI | 3.59ct | Princess | E | VS1 | Very Good
From $718
Compare at $2,313
Save 53.6%IGI | 3.5ct | Princess | E | VS1 | Excellent
From $719
Compare at $1,549
Save 79.5%IGI | 3.78ct | Princess | F | VS2 | Ideal
From $720
Compare at $3,510
Save 44%IGI | 3.79ct | Princess | F | VS1 | Very Good
From $720
Compare at $1,286
Entry pricing in this benchmark range starts around $457.
What to Know When Shopping for 3.5 Carat Princess Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $28,906 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 $2,073 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.
- Princess-cut diamonds are prone to chipping at the corners. Look for protective prong settings and avoid stones with visible inclusions near the edges.
Frequently Asked Questions
We currently track 673 comparable stones in the 3.50–3.99 carat benchmark range. Prices start around $457 and go up to $29,363.
Based on the latest market data, the average asking price is about $2,943 with a median around $2,073.
The observed spread is roughly $28,906 across tracked listings, which is about 98.4% from highest to lowest offer in the 3.50–3.99 carat benchmark range.
We refresh pricing data daily so these pages stay current with market changes.
Based on completed market data, the fair market benchmark is $2,943. The median price is $2,073, 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 13 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 $28,906 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 the 3.50–3.99 carat Princess diamond benchmark.