3.1 Carat Round Lab Grown Diamond Prices Comparison
As of February 2026, 3.1 carat round lab grown diamonds usually range from $591 to $25,245, with an average price of $1,191.In the last month, prices for these diamonds are down 2.3%.Compare 19,191 verified listings across 13 retailers tracked by CaratRadar.
3.1 Carat Round Lab Grown Diamond Market Overview
CaratRadar currently tracks 19,191 verified 3.1-carat round lab grown diamonds listed across 13 online retailers. Prices in this segment range from $591 to $25,245, with an average asking price of $1,191 and a median of $986.
The price spread of $24,654 (97.7% 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.
19,191 diamonds tracked in this segment
Price range: $591 to $25,245
Average price: $1,191
Median price: $986
Available across 13 retailers
Savings potential: up to 97.7%
Price Range Overview
As of Feb 28, 2026Real market range for this carat, shape, and diamond type.
19,191
$591
$1,191
$986
$25,245
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 52.9%3.05ct | Round | J | VS1 | Ideal
From $1,613
Compare at $3,422
IGISave 69.4%3.05ct | Round | J | VS1 | Ideal
From $1,019
Compare at $3,330
IGISave 69%3.05ct | Round | J | VS1 | Ideal
From $1,019
Compare at $3,290
IGISave 52.9%3.05ct | Round | J | VS1 | Ideal
From $1,613
Compare at $3,422
IGISave 52.9%3.05ct | Round | J | VS1 | Ideal
From $1,613
Compare at $3,422
IGISave 84.8%3.05ct | Round | E | VS1 | Ideal
From $1,056
Compare at $6,930
IGISave 84.8%3.05ct | Round | E | VS1 | Ideal
From $1,056
Compare at $6,930
IGISave 48.8%3.05ct | Round | K | VS2 | Ideal
From $13,450
Compare at $26,261
IGISave 83.4%3.05ct | Round | J | VS1 | Ideal
From $892
Compare at $5,370
IGISave 73.5%3.05ct | Round | J | VS1 | Ideal
From $882
Compare at $3,330
IGISave 73.5%3.05ct | Round | J | VS1 | Ideal
From $882
Compare at $3,330
IGISave 58.1%3.05ct | Round | J | SI2 | Ideal
From $5,700
Compare at $13,620
IGISave 76.2%3.05ct | Round | E | VVS2 | Excellent
From $1,325
Compare at $5,570
IGISave 58.9%3.05ct | Round | F | VS1 | Excellent
From $952
Compare at $2,315
IGISave 80.4%3.05ct | Round | H | VVS2 | Ideal
From $646
Compare at $3,300
IGISave 80.7%3.05ct | Round | E | IF | Ideal
From $2,366
Compare at $12,250
GIASave 81%3.05ct | Round | D | VVS2 | Excellent
From $1,799
Compare at $9,470
GIASave 70.7%3.05ct | Round | D | VVS2 | Excellent
From $2,581
Compare at $8,810
IGISave 82.2%3.05ct | Round | F | VS2 | Ideal
From $1,093
Compare at $6,130
IGISave 80.5%3.05ct | Round | H | VVS2 | Ideal
From $651
Compare at $3,340
IGISave 80.5%3.05ct | Round | H | VVS2 | Ideal
From $651
Compare at $3,340
IGISave 72.9%3.05ct | Round | H | VVS2 | Ideal
From $904
Compare at $3,340
IGISave 80.3%3.05ct | Round | H | VS1 | Ideal
From $622
Compare at $3,150
GCALSave 74.6%3.05ct | Round | D | FL | Ideal
From $13,927
Compare at $54,900
GIASave 59%3.05ct | Round | E | VVS1 | Excellent
From $4,834
Compare at $11,800
GIASave 59%3.05ct | Round | E | VVS1 | Excellent
From $4,834
Compare at $11,800
GIASave 77.5%3.05ct | Round | D | VVS2 | Excellent
From $2,422
Compare at $10,750
GIASave 80.9%3.05ct | Round | D | VVS2 | Excellent
From $1,727
Compare at $9,050
GIASave 59.1%3.05ct | Round | E | IF | Ideal
From $5,012
Compare at $12,250
GIASave 82.9%3.05ct | Round | D | VVS1 | Excellent
From $1,911
Compare at $11,170
GIASave 81.8%3.05ct | Round | D | VVS1 | Excellent
From $2,030
Compare at $11,170
GIASave 14.8%3.05ct | Round | E | VS1 | Excellent
From $2,063
Compare at $2,421
GIASave 82%3.05ct | Round | D | VS2 | Excellent
From $1,801
Compare at $9,990
GIASave 73.7%3.05ct | Round | E | VS1 | Ideal
From $2,844
Compare at $10,830
GIASave 81.2%3.05ct | Round | D | VVS1 | Excellent
From $2,015
Compare at $10,730
GIASave 81.9%3.05ct | Round | E | VVS2 | Excellent
From $3,340
Compare at $18,490
GIASave 14.8%3.05ct | Round | F | VVS2 | Excellent
From $1,763
Compare at $2,070
GIASave 13.9%3.05ct | Round | E | VVS2 | Excellent
From $1,885
Compare at $2,188
GIASave 84.7%3.05ct | Round | F | VS1 | Excellent
From $1,343
Compare at $8,780
GIASave 81.2%3.05ct | Round | D | VVS1 | Excellent
From $2,015
Compare at $10,730
GIASave 77.3%3.05ct | Round | E | VVS2 | Excellent
From $2,206
Compare at $9,710
GIASave 30.7%3.05ct | Round | E | VS2 | Excellent
From $1,235
Compare at $1,783
GIASave 80.8%3.05ct | Round | D | VS1 | Excellent
From $1,671
Compare at $8,720
GIASave 80.6%3.05ct | Round | D | VVS2 | Excellent
From $1,757
Compare at $9,050
GIASave 31.5%3.05ct | Round | D | VVS1 | Excellent
From $2,515
Compare at $3,671
GIASave 73.3%3.05ct | Round | E | VS1 | Excellent
From $4,299
Compare at $16,090
GIASave 74.9%3.05ct | Round | D | VVS1 | Excellent
From $2,802
Compare at $11,170
GIASave 82.1%3.05ct | Round | E | VS1 | Excellent
From $1,936
Compare at $10,830
GIASave 84.5%3.05ct | Round | E | VS1 | Excellent
From $1,433
Compare at $9,230
GIASave 80.7%3.05ct | Round | D | VVS2 | Excellent
From $1,850
Compare at $9,590
Entry pricing in this category starts around $591.
What to Know When Shopping for 3.1 Carat Round Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $24,654 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 $986 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 19,191 comparable stones in this segment. Prices start around $591 and go up to $25,245.
Based on the latest market data, the average asking price is about $1,191 with a median around $986.
The observed spread is roughly $24,654 across tracked listings, which is about 97.7% 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 $986, 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 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 $24,654 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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