3.5 Carat Round Lab Grown Diamond Prices Comparison
As of February 2026, 3.5 carat round lab grown diamonds usually range from $616 to $28,540, with an average price of $1,619.In the last month, prices for these diamonds are down 4.8%.Compare 3,220 verified listings across 12 retailers tracked by CaratRadar.
3.5 Carat Round Lab Grown Diamond Market Overview
CaratRadar currently tracks 3,220 verified 3.5-carat round lab grown diamonds listed across 12 online retailers. Prices in this segment range from $616 to $28,540, with an average asking price of $1,619 and a median of $1,087.
The price spread of $27,924 (97.8% 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.
3,220 diamonds tracked in this segment
Price range: $616 to $28,540
Average price: $1,619
Median price: $1,087
Available across 12 retailers
Savings potential: up to 97.8%
Price Range Overview
As of Feb 28, 2026Real market range for this carat, shape, and diamond type.
3,220
$616
$1,619
$1,087
$28,540
Price History
Price Comparison Matrix
Live Listings
See all listingsCompare current retailer offers for this exact segment and open any listing for full details.
IGISave 63.9%3.46ct | Round | F | VS1 | Excellent
From $986
Compare at $2,730
IGISave 75.2%3.46ct | Round | D | VS1 | Excellent
From $1,432
Compare at $5,780
IGISave 71.2%3.46ct | Round | E | VVS2 | Excellent
From $1,056
Compare at $3,665
GIASave 78.7%3.46ct | Round | D | IF | Excellent
From $10,122
Compare at $47,608
IGISave 60.4%3.46ct | Round | F | VS1 | Excellent
From $1,903
Compare at $4,800
IGISave 80%3.46ct | Round | G | VS1 | Ideal
From $876
Compare at $4,390
IGISave 78.5%3.46ct | Round | F | SI2 | Ideal
From $873
Compare at $4,050
IGISave 47.6%3.46ct | Round | I | VS1 | Very Good
From $726
Compare at $1,386
IGISave 88.3%3.46ct | Round | E | VVS2 | Ideal
From $983
Compare at $8,430
IGISave 68.8%3.46ct | Round | D | IF | Ideal
From $3,417
Compare at $10,965
IGISave 16.8%3.46ct | Round | F | VS1 | Excellent
From $1,292
Compare at $1,553
IGISave 85.5%3.46ct | Round | D | VVS1 | Ideal
From $1,500
Compare at $10,350
IGISave 56.1%3.46ct | Round | F | VS1 | Ideal
From $859
Compare at $1,957
IGISave 77.8%3.46ct | Round | E | IF | Ideal
From $2,321
Compare at $10,430
IGISave 52.8%3.46ct | Round | F | VS2 | Ideal
From $1,903
Compare at $4,030
IGISave 87.4%3.46ct | Round | D | VVS1 | Ideal
From $1,598
Compare at $12,670
IGISave 89.2%3.46ct | Round | D | IF | Ideal
From $1,924
Compare at $17,740
IGISave 89.2%3.46ct | Round | D | IF | Ideal
From $1,924
Compare at $17,740
IGISave 71.1%3.46ct | Round | D | VS1 | Excellent
From $978
Compare at $3,390
IGISave 84.8%3.46ct | Round | E | VVS2 | Ideal
From $1,383
Compare at $9,090
IGISave 85.5%3.46ct | Round | E | VS1 | Excellent
From $865
Compare at $5,950
IGISave 83.3%3.46ct | Round | F | VS1 | Ideal
From $890
Compare at $5,320
IGISave 83.6%3.46ct | Round | F | VVS2 | Ideal
From $949
Compare at $5,790
IGISave 82.1%3.46ct | Round | F | VS1 | Ideal
From $1,094
Compare at $6,100
IGISave 89.8%3.46ct | Round | F | VVS2 | Ideal
From $881
Compare at $8,630
IGISave 69.1%3.46ct | Round | F | VS1 | Ideal
From $845
Compare at $2,730
IGISave 70.6%3.46ct | Round | D | VVS1 | Ideal
From $2,206
Compare at $7,502
IGISave 68.8%3.46ct | Round | E | VS2 | Excellent
From $841
Compare at $2,695
IGISave 62.4%3.46ct | Round | F | VS1 | Excellent
From $986
Compare at $2,625
IGISave 16%3.46ct | Round | D | VS2 | Excellent
From $1,034
Compare at $1,231
IGISave 67.2%3.46ct | Round | F | VS2 | Excellent
From $829
Compare at $2,525
IGISave 72.4%3.46ct | Round | D | VS2 | Excellent
From $927
Compare at $3,355
GIASave 72.3%3.46ct | Round | E | VVS1 | Excellent
From $3,040
Compare at $10,970
GIASave 78.2%3.46ct | Round | D | VVS1 | Excellent
From $2,786
Compare at $12,790
GIASave 81.9%3.46ct | Round | D | VVS1 | Ideal
From $2,287
Compare at $12,670
GIASave 78%3.46ct | Round | D | VVS1 | Excellent
From $2,816
Compare at $12,790
IGISave 67.2%3.46ct | Round | H | VVS1 | Ideal
From $1,868
Compare at $5,690
IGISave 87.6%3.46ct | Round | F | VS1 | Ideal
From $839
Compare at $6,760
IGISave 87.6%3.46ct | Round | F | VS1 | Ideal
From $839
Compare at $6,760
IGISave 74.8%3.46ct | Round | E | VVS2 | Ideal
From $2,150
Compare at $8,540
IGISave 86.8%3.46ct | Round | D | IF | Ideal
From $1,904
Compare at $14,370
IGISave 64.3%3.46ct | Round | D | VS2 | Ideal
From $2,007
Compare at $5,620
IGISave 92.8%3.46ct | Round | D | IF | Excellent
From $2,045
Compare at $28,545
IGISave 75.8%3.46ct | Round | E | VS1 | Ideal
From $1,903
Compare at $7,870
IGISave 88.5%3.46ct | Round | D | IF | Ideal
From $2,045
Compare at $17,740
IGISave 87%3.46ct | Round | D | VS1 | Ideal
From $1,106
Compare at $8,520
IGISave 81%3.46ct | Round | E | VVS2 | Ideal
From $1,043
Compare at $5,490
IGISave 90.4%3.46ct | Round | E | VVS2 | Excellent
From $901
Compare at $9,430
IGISave 87.2%3.46ct | Round | F | VS1 | Ideal
From $855
Compare at $6,700
IGISave 88.3%3.46ct | Round | D | VVS2 | Excellent
From $1,174
Compare at $10,070
Entry pricing in this category starts around $616.
What to Know When Shopping for 3.5 Carat Round Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $27,924 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 $1,087 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.
- Round brilliants command a premium due to higher rough waste during cutting. If budget matters, consider oval or cushion shapes for similar visual size.
Frequently Asked Questions
We currently track 3,220 comparable stones in this segment. Prices start around $616 and go up to $28,540.
Based on the latest market data, the average asking price is about $1,619 with a median around $1,087.
The observed spread is roughly $27,924 across tracked listings, which is about 97.8% 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 $1,087, 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 12 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 $27,924 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.
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