1.3 Carat Radiant Lab Grown Diamond Prices Comparison
As of February 2026, 1.3 carat radiant lab grown diamonds usually range from $285 to $2,880, with an average price of $549.In the last month, prices for these diamonds are down 1.9%.Compare 1,792 verified listings across 10 retailers tracked by CaratRadar.
1.3 Carat Radiant Lab Grown Diamond Market Overview
CaratRadar currently tracks 1,792 verified 1.3-carat radiant lab grown diamonds listed across 10 online retailers. Prices in this segment range from $285 to $2,880, with an average asking price of $549 and a median of $503.
The price spread of $2,595 (90.1% 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.
1,792 diamonds tracked in this segment
Price range: $285 to $2,880
Average price: $549
Median price: $503
Available across 10 retailers
Savings potential: up to 90.1%
Price Range Overview
As of Feb 28, 2026Real market range for this carat, shape, and diamond type.
1,792
$285
$549
$503
$2,880
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 55.4%1.25ct | Radiant | E | VVS2 | Excellent
From $413
Compare at $925
IGISave 65.5%1.25ct | Radiant | G | SI1 | Ideal
From $1,176
Compare at $3,406
IGISave 43.8%1.25ct | Radiant | H | VVS2 | Ideal
From $500
Compare at $890
IGISave 62.2%1.25ct | Radiant | G | VS1 | Ideal
From $1,579
Compare at $4,172
IGISave 61.3%1.25ct | Radiant | F | VVS1 | Very Good
From $515
Compare at $1,330
IGISave 62%1.25ct | Radiant | G | VS2 | Ideal
From $1,428
Compare at $3,754
IGISave 59.5%1.25ct | Radiant | G | VS2 | Ideal
From $387
Compare at $956
IGISave 63.4%1.25ct | Radiant | G | VVS2 | Ideal
From $475
Compare at $1,300
IGISave 73.8%1.25ct | Radiant | G | VS2 | Very Good
From $382
Compare at $1,460
IGISave 66%1.25ct | Radiant | F | VS2 | Excellent
From $316
Compare at $930
IGISave 46.2%1.25ct | Radiant | F | VS1 | Excellent
From $839
Compare at $1,560
IGISave 73.4%1.25ct | Radiant | G | VVS1 | Excellent
From $425
Compare at $1,600
IGISave 71.1%1.25ct | Radiant | E | VVS2 | Ideal
From $471
Compare at $1,630
IGISave 77.4%1.25ct | Radiant | E | VS1 | Ideal
From $508
Compare at $2,250
IGISave 77.8%1.25ct | Radiant | D | VS1 | Ideal
From $521
Compare at $2,350
IGISave 27%1.25ct | Radiant | I | VVS1 | Ideal
From $359
Compare at $492
IGISave 72%1.25ct | Radiant | E | VS2 | Excellent
From $397
Compare at $1,420
IGISave 72.6%1.25ct | Radiant | E | VVS2 | Very Good
From $539
Compare at $1,970
IGISave 57.3%1.25ct | Radiant | D | VVS2 | Excellent
From $538
Compare at $1,259
IGISave 71.8%1.25ct | Radiant | D | VS2 | Ideal
From $647
Compare at $2,290
IGISave 66.1%1.25ct | Radiant | D | VVS2 | Ideal
From $664
Compare at $1,959
IGISave 71.9%1.25ct | Radiant | F | VS2 | Very Good
From $618
Compare at $2,200
IGISave 74.8%1.25ct | Radiant | E | VVS2 | Ideal
From $454
Compare at $1,800
IGI1.25ct | Radiant | D | VVS2 | Very Good
From $458
Compare at $495
IGISave 75.2%1.25ct | Radiant | D | VS1 | Ideal
From $406
Compare at $1,640
IGISave 74.8%1.25ct | Radiant | D | VVS2 | Ideal
From $458
Compare at $1,820
IGISave 74.8%1.25ct | Radiant | E | VVS2 | Ideal
From $454
Compare at $1,800
IGISave 76.6%1.25ct | Radiant | D | VVS2 | Ideal
From $509
Compare at $2,180
IGISave 70.6%1.25ct | Radiant | D | VS1 | Ideal
From $497
Compare at $1,690
IGISave 71.9%1.25ct | Radiant | F | VS2 | Ideal
From $618
Compare at $2,200
IGISave 78.3%1.25ct | Radiant | D | IF | Excellent
From $754
Compare at $3,480
IGISave 15.3%1.25ct | Radiant | F | VVS2 | Very Good
From $434
Compare at $512
IGISave 42.2%1.25ct | Radiant | D | VVS2 | Excellent
From $1,000
Compare at $1,730
GIASave 79.4%1.25ct | Radiant | D | VVS2 | Ideal
From $706
Compare at $3,430
GIASave 82.3%1.25ct | Radiant | D | IF | Ideal
From $890
Compare at $5,030
IGISave 61.1%1.25ct | Radiant | E | VVS1 | Very Good
From $622
Compare at $1,600
IGISave 76.4%1.25ct | Radiant | D | VS2 | Excellent
From $387
Compare at $1,640
IGISave 75%1.25ct | Radiant | G | VVS2 | Ideal
From $515
Compare at $2,060
IGISave 59.4%1.25ct | Radiant | F | VS2 | Very Good
From $474
Compare at $1,167
IGISave 17%1.25ct | Radiant | G | VS1 | Excellent
From $1,170
Compare at $1,410
IGISave 61.7%1.25ct | Radiant | G | VS2 | Very Good
From $344
Compare at $896
IGISave 72.6%1.25ct | Radiant | E | VS1 | Ideal
From $525
Compare at $1,920
IGISave 73.1%1.25ct | Radiant | G | VS2 | Very Good
From $466
Compare at $1,730
IGISave 73.4%1.25ct | Radiant | G | VS1 | Very Good
From $418
Compare at $1,570
IGISave 70.7%1.25ct | Radiant | E | VVS2 | Excellent
From $595
Compare at $2,030
IGISave 95.5%1.25ct | Radiant | F | VVS2 | Ideal
From $515
Compare at $11,400
IGISave 67.1%1.25ct | Radiant | J | VVS2 | Ideal
From $539
Compare at $1,640
IGISave 77.1%1.25ct | Radiant | D | VVS2 | Ideal
From $541
Compare at $2,360
IGISave 59%1.25ct | Radiant | F | VS1 | Ideal
From $418
Compare at $1,019
IGISave 72.5%1.25ct | Radiant | D | VVS2 | Ideal
From $541
Compare at $1,970
Entry pricing in this category starts around $285.
What to Know When Shopping for 1.3 Carat Radiant Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $2,595 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 $503 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 1,792 comparable stones in this segment. Prices start around $285 and go up to $2,880.
Based on the latest market data, the average asking price is about $549 with a median around $503.
The observed spread is roughly $2,595 across tracked listings, which is about 90.1% 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 $503, 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 10 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 $2,595 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.
1.2 Carat Radiant Lab Grown Diamond Prices
1.4 Carat Radiant Lab Grown Diamond Prices
1.1 Carat Radiant Lab Grown Diamond Prices
1.5 Carat Radiant Lab Grown Diamond Prices
1 Carat Radiant Lab Grown Diamond Prices
1.6 Carat Radiant Lab Grown Diamond Prices
0.9 Carat Radiant Lab Grown Diamond Prices
1.3 Carat Round Lab Grown Diamond Prices
1.3 Carat Oval Lab Grown Diamond Prices
1.3 Carat Emerald Lab Grown Diamond Prices
1.3 Carat Pear Lab Grown Diamond Prices
1.3 Carat Cushion Lab Grown Diamond Prices
Tracking Lab Grown inventory for 1.3 carat Radiant diamonds.