3.1 Carat Round Lab Grown Diamond Prices Comparison
As of April 2026, 3.1 carat round lab grown diamonds usually range from $523 to $16,200, with an average price of $2,755.In the last month, prices for these diamonds are down 0.5%.Compare 1,993 verified listings across 12 retailers tracked by CaratRadar.
3.1 Carat Round Lab Grown Diamond Market Overview
CaratRadar currently tracks 1,993 verified 3.1-carat round lab grown diamonds listed across 12 online retailers. Prices in this segment range from $523 to $16,200, with an average asking price of $2,755 and a median of $2,145.
The price spread of $15,677 (96.8% 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.
1,993 diamonds tracked in this segment
Price range: $523 to $16,200
Average price: $2,755
Median price: $2,145
Available across 12 retailers
Savings potential: up to 96.8%
Price Range Overview
As of Apr 14, 2026Real market range for this carat, shape, and diamond type.
1,993
$523
$2,755
$2,145
$16,200
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 70.1%GCAL | 3.11ct | Round | D | FL | Excellent
From $17,891
Compare at $59,920
Save 74.2%GCAL | 3.11ct | Round | D | IF | Ideal
From $3,820
Compare at $14,800
Save 73.3%GCAL | 3.11ct | Round | D | FL | Ideal
From $14,930
Compare at $55,980
Save 73.4%GCAL | 3.11ct | Round | D | VVS1 | Excellent
From $2,693
Compare at $10,120
Save 73.5%GCAL | 3.11ct | Round | D | VVS1 | Excellent
From $2,450
Compare at $9,240
Save 56.2%GIA | 3.11ct | Round | D | VVS2 | Excellent
From $4,135
Compare at $9,440
Save 44.3%GIA | 3.11ct | Round | D | VVS1 | Excellent
From $6,290
Compare at $11,300
Save 57.9%GIA | 3.11ct | Round | D | VVS1 | Excellent
From $2,999
Compare at $7,132
Save 64.9%GIA | 3.11ct | Round | D | VVS1 | Excellent
From $3,965
Compare at $11,300
Save 37.3%GIA | 3.11ct | Round | D | VVS2 | Ideal
From $4,135
Compare at $6,595
Save 59.5%GIA | 3.11ct | Round | D | IF | Excellent
From $10,395
Compare at $25,658
Save 37.6%GIA | 3.11ct | Round | D | IF | Excellent
From $16,000
Compare at $25,658
Save 73.3%GIA | 3.11ct | Round | G | VS1 | Excellent
From $4,466
Compare at $16,710
Save 65.6%GIA | 3.11ct | Round | E | SI1 | Excellent
From $1,572
Compare at $4,570
Save 69.3%GIA | 3.11ct | Round | D | VVS1 | Ideal
From $3,498
Compare at $11,390
Save 73.5%GIA | 3.11ct | Round | G | VS2 | Ideal
From $2,923
Compare at $11,040
Save 42.7%GIA | 3.11ct | Round | D | VS1 | Excellent
From $5,474
Compare at $9,550
Save 72.3%GIA | 3.11ct | Round | D | VVS1 | Excellent
From $2,842
Compare at $10,270
Save 56.2%GIA | 3.11ct | Round | D | VVS2 | Excellent
From $4,135
Compare at $9,440
Save 65.2%GIA | 3.11ct | Round | D | VVS1 | Excellent
From $3,965
Compare at $11,390
Save 75.6%GIA | 3.11ct | Round | D | VVS1 | Excellent
From $2,780
Compare at $11,390
Save 65.2%GIA | 3.11ct | Round | D | VVS1 | Excellent
From $3,965
Compare at $11,390
Save 78.3%GIA | 3.11ct | Round | E | SI1 | Excellent
From $1,854
Compare at $8,550
GIA | 3.11ct | Round | D | VVS1 | Excellent
From $6,290
Save 68.5%GIA | 3.11ct | Round | E | SI1 | Excellent
From $3,079
Compare at $9,790
Save 73.3%GIA | 3.11ct | Round | E | VS2 | Excellent
From $1,661
Compare at $6,210
Save 73.3%GIA | 3.11ct | Round | E | VS2 | Excellent
From $1,661
Compare at $6,210
Save 48.8%GIA | 3.11ct | Round | D | FL | Excellent
From $10,986
Compare at $21,460
Save 73.3%GIA | 3.11ct | Round | E | VS2 | Excellent
From $1,661
Compare at $6,210
Save 72%GIA | 3.11ct | Round | D | VVS1 | Excellent
From $3,161
Compare at $11,300
Save 72.9%GIA | 3.11ct | Round | E | VVS2 | Ideal
From $3,976
Compare at $14,650
Save 44.3%GIA | 3.11ct | Round | D | VVS1 | Excellent
From $6,290
Compare at $11,300
Save 73.3%GIA | 3.11ct | Round | E | VS2 | Ideal
From $1,661
Compare at $6,210
Save 65.2%GIA | 3.11ct | Round | D | VVS1 | Excellent
From $3,965
Compare at $11,390
Save 27.6%GIA | 3.11ct | Round | E | VS1 | Ideal
From $2,421
Compare at $3,343
Save 56.2%GIA | 3.11ct | Round | D | VVS2 | Excellent
From $4,135
Compare at $9,440
Save 37.3%GIA | 3.11ct | Round | D | VVS2 | Ideal
From $4,135
Compare at $6,595
Save 44.3%GIA | 3.11ct | Round | D | VVS1 | Excellent
From $6,290
Compare at $11,300
Save 73.3%GIA | 3.11ct | Round | D | VVS1 | Excellent
From $4,111
Compare at $15,390
Save 20.6%GIA | 3.11ct | Round | D | VVS2 | Excellent
From $7,499
Compare at $9,440
Save 19.9%GIA | 3.11ct | Round | D | VVS2 | Excellent
From $4,135
Compare at $5,165
Save 52.8%GIA | 3.11ct | Round | D | VVS1 | Excellent
From $5,377
Compare at $11,390
GIA | 3.11ct | Round | D | VVS1 | Excellent
From $6,182
Compare at $6,290
Save 75%GIA | 3.11ct | Round | D | VVS1 | Excellent
From $2,850
Compare at $11,390
Save 32%GIA | 3.11ct | Round | F | VS2 | Ideal
From $3,032
Compare at $4,460
GIA | 3.11ct | Round | F | VS1 | Excellent
From $1,838
Compare at $1,840
Save 72.3%GIA | 3.11ct | Round | E | VVS1 | Excellent
From $2,720
Compare at $9,830
Save 74.3%GIA | 3.11ct | Round | E | VVS1 | Excellent
From $2,735
Compare at $10,650
Save 44.3%GIA | 3.11ct | Round | D | VVS1 | Excellent
From $6,290
Compare at $11,300
Save 75.9%GIA | 3.11ct | Round | D | IF | Excellent
From $6,196
Compare at $25,658
Entry pricing in this category starts around $523.
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 $15,677 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 $2,145 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 1,993 comparable stones in this segment. Prices start around $523 and go up to $16,200.
Based on the latest market data, the average asking price is about $2,755 with a median around $2,145.
The observed spread is roughly $15,677 across tracked listings, which is about 96.8% 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 $2,145, 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 $15,677 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 Carat Round Lab Grown Diamond Prices
3.2 Carat Round Lab Grown Diamond Prices
2.9 Carat Round Lab Grown Diamond Prices
3.3 Carat Round Lab Grown Diamond Prices
2.8 Carat Round Lab Grown Diamond Prices
3.4 Carat Round Lab Grown Diamond Prices
2.7 Carat Round Lab Grown Diamond Prices
3.1 Carat Oval Lab Grown Diamond Prices
3.1 Carat Emerald Lab Grown Diamond Prices
3.1 Carat Radiant Lab Grown Diamond Prices
3.1 Carat Cushion Lab Grown Diamond Prices
3.1 Carat Pear Lab Grown Diamond Prices
Tracking Lab Grown inventory for 3.1 carat Round diamonds.