3.5 Carat Radiant Lab Grown Diamond Prices Comparison
As of February 2026, 3.5 carat radiant lab grown diamonds usually range from $656 to $26,740, with an average price of $2,131.In the last month, prices for these diamonds are down 4.4%.Compare 912 verified listings across 11 retailers tracked by CaratRadar.
3.5 Carat Radiant Lab Grown Diamond Market Overview
CaratRadar currently tracks 912 verified 3.5-carat radiant lab grown diamonds listed across 11 online retailers. Prices in this segment range from $656 to $26,740, with an average asking price of $2,131 and a median of $1,221.
The price spread of $26,084 (97.5% 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.
912 diamonds tracked in this segment
Price range: $656 to $26,740
Average price: $2,131
Median price: $1,221
Available across 11 retailers
Savings potential: up to 97.5%
Price Range Overview
As of Feb 28, 2026Real market range for this carat, shape, and diamond type.
912
$656
$2,131
$1,221
$26,740
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 82.5%3.46ct | Radiant | E | VVS2 | Ideal
From $1,162
Compare at $6,650
IGISave 80%3.46ct | Radiant | F | VVS2 | Ideal
From $1,330
Compare at $6,650
IGISave 80.5%3.46ct | Radiant | F | VS2 | Ideal
From $806
Compare at $4,130
IGISave 85.7%3.46ct | Radiant | F | VVS2 | Ideal
From $839
Compare at $5,850
IGISave 85.2%3.46ct | Radiant | G | VS2 | Ideal
From $798
Compare at $5,400
IGISave 18.6%3.46ct | Radiant | E | VVS2 | Very Good
From $1,063
Compare at $1,307
GIASave 71.5%3.46ct | Radiant | D | VVS1 | Excellent
From $3,221
Compare at $11,290
IGISave 87.6%3.46ct | Radiant | G | VS1 | Ideal
From $806
Compare at $6,510
IGISave 35.3%3.46ct | Radiant | FANCY | VS1 | Good
From $2,399
Compare at $3,710
IGISave 68.3%3.46ct | Radiant | E | VVS2 | Excellent
From $1,948
Compare at $6,150
IGISave 74.4%3.46ct | Radiant | E | VVS2 | Excellent
From $938
Compare at $3,665
IGISave 70.6%3.46ct | Radiant | E | VS1 | Ideal
From $876
Compare at $2,975
IGISave 82.2%3.46ct | Radiant | F | VS2 | Ideal
From $776
Compare at $4,350
IGISave 64.5%3.46ct | Radiant | E | VS1 | Very Good
From $1,058
Compare at $2,975
IGISave 65.8%3.46ct | Radiant | D | VVS1 | Excellent
From $3,146
Compare at $9,210
IGISave 62.3%3.46ct | Radiant | D | VS1 | Ideal
From $1,327
Compare at $3,525
IGISave 49.7%3.46ct | Radiant | E | VVS2 | Excellent
From $1,218
Compare at $2,422
IGISave 67.4%3.46ct | Radiant | D | IF | Ideal
From $6,052
Compare at $18,548
IGISave 77.1%3.46ct | Radiant | D | FL | Very Good
From $10,562
Compare at $46,040
IGISave 80.1%3.46ct | Radiant | F | VVS2 | Ideal
From $1,110
Compare at $5,580
IGISave 80.8%3.46ct | Radiant | F | VS1 | Ideal
From $1,049
Compare at $5,460
IGISave 60.9%3.46ct | Radiant | E | VS1 | Excellent
From $1,122
Compare at $2,870
IGISave 88.2%3.46ct | Radiant | E | VS1 | Ideal
From $869
Compare at $7,350
IGISave 85.6%3.46ct | Radiant | G | VS1 | Ideal
From $673
Compare at $4,680
3.46ct | Radiant | G | VVS2 | Very Good
From $878
Compare at $6,490
IGISave 49.9%3.46ct | Radiant | H | VS1 | Ideal
From $942
Compare at $1,880
IGISave 76.2%3.46ct | Radiant | E | VS1 | Ideal
From $1,648
Compare at $6,910
GIASave 69.6%3.46ct | Radiant | D | VVS1 | Excellent
From $3,221
Compare at $10,590
IGISave 82.1%3.47ct | Radiant | D | IF | Ideal
From $3,883
Compare at $21,660
IGISave 17.2%3.47ct | Radiant | D | VS1 | Very Good
From $882
Compare at $1,066
IGISave 67.8%3.47ct | Radiant | D | IF | Excellent
From $4,666
Compare at $14,468
IGISave 55.5%3.47ct | Radiant | F | VVS2 | Ideal
From $1,109
Compare at $2,492
IGISave 75.3%3.47ct | Radiant | F | VS2 | Ideal
From $967
Compare at $3,920
IGISave 86.5%3.47ct | Radiant | G | VVS2 | Very Good
From $880
Compare at $6,510
GIASave 74.7%3.47ct | Radiant | E | VVS2 | Excellent
From $1,997
Compare at $7,890
GIASave 71.5%3.47ct | Radiant | D | VVS1 | Excellent
From $3,229
Compare at $11,320
IGISave 80.7%3.47ct | Radiant | E | VS1 | Excellent
From $931
Compare at $4,820
GIASave 81.2%3.47ct | Radiant | D | IF | Excellent
From $5,359
Compare at $28,480
GIASave 81.4%3.47ct | Radiant | D | VVS1 | Excellent
From $2,617
Compare at $14,080
GIASave 29.4%3.47ct | Radiant | D | FL | Ideal
From $21,940
Compare at $31,086
GIASave 78.2%3.47ct | Radiant | D | VS1 | Excellent
From $2,424
Compare at $11,100
IGISave 62.2%3.47ct | Radiant | E | VS1 | Ideal
From $1,125
Compare at $2,980
IGISave 81.6%3.47ct | Radiant | F | VS1 | Ideal
From $1,052
Compare at $5,730
IGISave 67.1%3.47ct | Radiant | D | VVS1 | Excellent
From $3,155
Compare at $9,580
IGISave 85.4%3.47ct | Radiant | F | VS1 | Ideal
From $1,131
Compare at $7,720
IGISave 87.1%3.47ct | Radiant | F | VS2 | Ideal
From $777
Compare at $6,015
IGISave 78.6%3.47ct | Radiant | E | VVS2 | Very Good
From $1,103
Compare at $5,150
IGISave 88.2%3.47ct | Radiant | E | VS1 | Ideal
From $870
Compare at $7,370
IGISave 84.5%3.47ct | Radiant | F | VS2 | Ideal
From $777
Compare at $5,010
IGISave 85.1%3.47ct | Radiant | D | VS1 | Ideal
From $1,174
Compare at $7,880
Entry pricing in this category starts around $656.
What to Know When Shopping for 3.5 Carat Radiant Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $26,084 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 $1,221 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.
- Radiant cuts combine the elegance of emerald shapes with the brilliance of round cuts, offering good value per carat.
Frequently Asked Questions
We currently track 912 comparable stones in this segment. Prices start around $656 and go up to $26,740.
Based on the latest market data, the average asking price is about $2,131 with a median around $1,221.
The observed spread is roughly $26,084 across tracked listings, which is about 97.5% 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 $1,221, 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 11 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 $26,084 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.
3.4 Carat Radiant Lab Grown Diamond Prices
3.6 Carat Radiant Lab Grown Diamond Prices
3.3 Carat Radiant Lab Grown Diamond Prices
3.7 Carat Radiant Lab Grown Diamond Prices
3.2 Carat Radiant Lab Grown Diamond Prices
3.8 Carat Radiant Lab Grown Diamond Prices
3.1 Carat Radiant Lab Grown Diamond Prices
3.5 Carat Round Lab Grown Diamond Prices
3.5 Carat Oval Lab Grown Diamond Prices
3.5 Carat Cushion Lab Grown Diamond Prices
3.5 Carat Emerald Lab Grown Diamond Prices
3.5 Carat Pear Lab Grown Diamond Prices
Tracking Lab Grown inventory for 3.5 carat Radiant diamonds.