3.1 Carat Radiant Lab Grown Diamond Prices Comparison
As of February 2026, 3.1 carat radiant lab grown diamonds usually range from $592 to $21,170, with an average price of $1,257.In the last month, prices for these diamonds are down 2.9%.Compare 11,683 verified listings across 13 retailers tracked by CaratRadar.
3.1 Carat Radiant Lab Grown Diamond Market Overview
CaratRadar currently tracks 11,683 verified 3.1-carat radiant lab grown diamonds listed across 13 online retailers. Prices in this segment range from $592 to $21,170, with an average asking price of $1,257 and a median of $992.
The price spread of $20,578 (97.2% 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.
11,683 diamonds tracked in this segment
Price range: $592 to $21,170
Average price: $1,257
Median price: $992
Available across 13 retailers
Savings potential: up to 97.2%
Price Range Overview
As of Feb 28, 2026Real market range for this carat, shape, and diamond type.
11,683
$592
$1,257
$992
$21,170
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 57.2%3.05ct | Radiant | H | VS2 | Ideal
From $9,500
Compare at $22,175
IGISave 57.8%3.05ct | Radiant | G | VS1 | Ideal
From $11,340
Compare at $26,846
IGISave 74.4%3.05ct | Radiant | E | IF | Excellent
From $4,715
Compare at $18,440
IGISave 82.4%3.05ct | Radiant | F | VS1 | Excellent
From $1,063
Compare at $6,050
GIASave 81.2%3.05ct | Radiant | D | VVS1 | Excellent
From $2,329
Compare at $12,400
IGISave 57.7%3.05ct | Radiant | F | SI1 | Ideal
From $1,282
Compare at $3,030
GIASave 86.4%3.05ct | Radiant | D | VS1 | Excellent
From $3,285
Compare at $24,100
GIASave 81.8%3.05ct | Radiant | D | VVS2 | Excellent
From $2,962
Compare at $16,280
GIASave 53.7%3.05ct | Radiant | D | VVS2 | Excellent
From $1,987
Compare at $4,293
GIASave 71.4%3.05ct | Radiant | E | VS1 | Excellent
From $3,181
Compare at $11,120
GIASave 77.5%3.05ct | Radiant | E | VVS2 | Excellent
From $2,266
Compare at $10,060
GIASave 81.5%3.05ct | Radiant | D | VVS1 | Excellent
From $2,299
Compare at $12,400
GIASave 77.6%3.05ct | Radiant | E | VS1 | Excellent
From $2,055
Compare at $9,190
GIASave 81.5%3.05ct | Radiant | D | VVS1 | Excellent
From $2,299
Compare at $12,400
GIASave 71.1%3.05ct | Radiant | G | VS1 | Excellent
From $1,578
Compare at $5,470
GIASave 56%3.05ct | Radiant | D | VVS1 | Ideal
From $6,440
Compare at $14,640
GIASave 71.4%3.05ct | Radiant | F | VS1 | Excellent
From $2,894
Compare at $10,120
GIASave 56%3.05ct | Radiant | D | VVS1 | Ideal
From $6,440
Compare at $14,640
GIASave 81.5%3.05ct | Radiant | D | VVS1 | Excellent
From $2,299
Compare at $12,400
GIASave 81.5%3.05ct | Radiant | D | VVS1 | Excellent
From $2,299
Compare at $12,400
GIASave 68.3%3.05ct | Radiant | H | VVS2 | Ideal
From $1,656
Compare at $5,220
GIASave 85%3.05ct | Radiant | D | FL | Excellent
From $8,657
Compare at $57,540
GIASave 80.9%3.05ct | Radiant | D | VVS2 | Excellent
From $1,977
Compare at $10,340
GIASave 72.2%3.05ct | Radiant | E | VVS2 | Excellent
From $3,307
Compare at $11,910
GIASave 56.9%3.05ct | Radiant | D | VVS2 | Excellent
From $2,929
Compare at $6,794
GIASave 65.3%3.05ct | Radiant | D | VVS1 | Excellent
From $2,838
Compare at $8,175
GIASave 81.2%3.05ct | Radiant | D | VVS1 | Excellent
From $2,329
Compare at $12,400
GIASave 32.5%3.05ct | Radiant | E | VVS2 | Excellent
From $1,755
Compare at $2,600
GIASave 63.6%3.05ct | Radiant | D | IF | Ideal
From $10,635
Compare at $29,220
GIASave 61.9%3.05ct | Radiant | D | VVS2 | Ideal
From $4,225
Compare at $11,090
GIASave 64.9%3.05ct | Radiant | D | VVS1 | Excellent
From $2,868
Compare at $8,175
GIASave 80.2%3.05ct | Radiant | D | VS1 | Excellent
From $3,420
Compare at $17,230
GIASave 82.1%3.05ct | Radiant | E | IF | Excellent
From $4,962
Compare at $27,690
GIASave 49.3%3.05ct | Radiant | D | FL | Excellent
From $10,944
Compare at $21,591
GIASave 80.9%3.05ct | Radiant | D | VVS2 | Excellent
From $1,977
Compare at $10,340
GIASave 81.2%3.05ct | Radiant | D | VVS1 | Excellent
From $2,329
Compare at $12,400
GIASave 80.8%3.05ct | Radiant | D | VVS2 | Excellent
From $1,883
Compare at $9,790
GIASave 64.9%3.05ct | Radiant | D | VVS1 | Excellent
From $2,868
Compare at $8,175
GIASave 72.2%3.05ct | Radiant | D | VVS1 | Excellent
From $2,831
Compare at $10,174
IGISave 57.8%3.05ct | Radiant | G | VS1 | Ideal
From $11,340
Compare at $26,846
IGISave 56.8%3.05ct | Radiant | H | SI1 | Ideal
From $8,570
Compare at $19,824
GIASave 21%3.05ct | Radiant | D | VVS2 | Ideal
From $8,760
Compare at $11,090
GIASave 71.6%3.05ct | Radiant | G | VS1 | Excellent
From $2,323
Compare at $8,175
IGISave 82.4%3.05ct | Radiant | F | VS1 | Good
From $1,063
Compare at $6,050
IGISave 65.7%3.05ct | Radiant | E | VVS2 | Excellent
From $1,107
Compare at $3,230
IGISave 17.6%3.05ct | Radiant | F | VS1 | Very Good
From $3,992
Compare at $4,843
IGISave 86.4%3.05ct | Radiant | E | VS1 | Ideal
From $989
Compare at $7,290
IGISave 80.7%3.05ct | Radiant | D | VVS2 | Ideal
From $1,834
Compare at $9,500
IGISave 66.9%3.05ct | Radiant | FANCY | VS1 | Excellent
From $1,952
Compare at $5,891
IGISave 49.8%3.05ct | Radiant | D | VS1 | Ideal
From $1,078
Compare at $2,147
Entry pricing in this category starts around $592.
What to Know When Shopping for 3.1 Carat Radiant Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $20,578 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 $992 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 11,683 comparable stones in this segment. Prices start around $592 and go up to $21,170.
Based on the latest market data, the average asking price is about $1,257 with a median around $992.
The observed spread is roughly $20,578 across tracked listings, which is about 97.2% 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 $992, 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 $20,578 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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