1.3 Carat Round Lab Grown Diamond Prices Comparison
As of February 2026, 1.3 carat round lab grown diamonds usually range from $339 to $5,582, with an average price of $579.In the last month, prices for these diamonds are up 0.8%.Compare 6,898 verified listings across 9 retailers tracked by CaratRadar.
1.3 Carat Round Lab Grown Diamond Market Overview
CaratRadar currently tracks 6,898 verified 1.3-carat round lab grown diamonds listed across 9 online retailers. Prices in this segment range from $339 to $5,582, with an average asking price of $579 and a median of $505.
The price spread of $5,243 (93.9% 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.
6,898 diamonds tracked in this segment
Price range: $339 to $5,582
Average price: $579
Median price: $505
Available across 9 retailers
Savings potential: up to 93.9%
Price Range Overview
As of Feb 28, 2026Real market range for this carat, shape, and diamond type.
6,898
$339
$579
$505
$5,582
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 63.2%1.25ct | Round | J | VS2 | Ideal
From $1,800
Compare at $4,889
IGISave 62.5%1.25ct | Round | J | VS1 | Ideal
From $1,890
Compare at $5,034
IGISave 14.5%1.25ct | Round | D | VVS2 | Excellent
From $666
Compare at $779
IGISave 69.5%1.25ct | Round | D | VS1 | Ideal
From $708
Compare at $2,320
IGISave 68.9%1.25ct | Round | E | VS1 | Excellent
From $713
Compare at $2,291
IGISave 75.3%1.25ct | Round | F | VS1 | Excellent
From $1,075
Compare at $4,350
GCALSave 77.5%1.25ct | Round | D | IF | Excellent
From $2,036
Compare at $9,030
GIASave 24.8%1.25ct | Round | E | VS1 | Excellent
From $783
Compare at $1,042
IGISave 69%1.25ct | Round | D | VVS1 | Ideal
From $517
Compare at $1,670
IGISave 64.7%1.25ct | Round | I | SI1 | Ideal
From $1,930
Compare at $5,467
IGISave 13.2%1.25ct | Round | F | VVS2 | Excellent
From $508
Compare at $585
IGISave 57.7%1.25ct | Round | D | VVS2 | Ideal
From $509
Compare at $1,203
IGISave 63.5%1.25ct | Round | D | VS2 | Ideal
From $440
Compare at $1,205
IGISave 63.4%1.25ct | Round | D | VS1 | Ideal
From $465
Compare at $1,270
IGISave 57.5%1.25ct | Round | E | VS1 | Excellent
From $512
Compare at $1,205
IGISave 62.7%1.25ct | Round | G | VS1 | Ideal
From $530
Compare at $1,421
IGISave 66.6%1.25ct | Round | E | VVS2 | Ideal
From $477
Compare at $1,430
IGISave 15.6%1.25ct | Round | E | VVS2 | Excellent
From $467
Compare at $553
IGISave 58.2%1.25ct | Round | G | VVS1 | Ideal
From $615
Compare at $1,471
IGISave 71.4%1.25ct | Round | D | VVS2 | Ideal
From $475
Compare at $1,660
IGISave 71.4%1.25ct | Round | D | VVS2 | Excellent
From $475
Compare at $1,660
IGISave 71.4%1.25ct | Round | D | VVS2 | Excellent
From $475
Compare at $1,660
IGISave 72.9%1.25ct | Round | E | VVS1 | Ideal
From $485
Compare at $1,790
IGISave 66%1.25ct | Round | D | VS2 | Ideal
From $404
Compare at $1,190
IGISave 15.2%1.25ct | Round | G | IF | Excellent
From $593
Compare at $699
IGISave 56.7%1.25ct | Round | D | VS1 | Ideal
From $615
Compare at $1,420
IGISave 72.9%1.25ct | Round | E | VVS1 | Ideal
From $485
Compare at $1,790
IGISave 63%1.25ct | Round | E | VVS2 | Ideal
From $511
Compare at $1,380
IGISave 19.5%1.25ct | Round | E | VS1 | Ideal
From $455
Compare at $565
IGISave 59.5%1.25ct | Round | D | VVS2 | Ideal
From $649
Compare at $1,600
IGI1.25ct | Round | F | VVS2 | Ideal
From $721
Compare at $750
IGISave 64.7%1.25ct | Round | G | VVS2 | Ideal
From $470
Compare at $1,330
IGISave 59.4%1.25ct | Round | E | VS1 | Ideal
From $500
Compare at $1,230
IGISave 59.5%1.25ct | Round | D | VVS2 | Ideal
From $649
Compare at $1,600
IGISave 82.1%1.25ct | Round | E | IF | Ideal
From $505
Compare at $2,820
IGISave 99.2%1.25ct | Round | E | VS1 | Excellent
From $528
Compare at $63,440
IGISave 53.2%1.25ct | Round | D | VVS2 | Excellent
From $435
Compare at $929
IGISave 74%1.25ct | Round | D | VVS1 | Excellent
From $616
Compare at $2,370
IGISave 59.1%1.25ct | Round | D | VS2 | Ideal
From $404
Compare at $990
IGISave 66.6%1.25ct | Round | D | VVS2 | Ideal
From $477
Compare at $1,430
IGISave 64.9%1.25ct | Round | D | VS1 | Excellent
From $456
Compare at $1,300
IGISave 53.6%1.25ct | Round | E | SI1 | Ideal
From $399
Compare at $860
IGISave 32.7%1.25ct | Round | F | VS1 | Ideal
From $769
Compare at $1,143
IGISave 63.7%1.25ct | Round | E | VVS2 | Ideal
From $494
Compare at $1,360
IGISave 31.9%1.25ct | Round | E | VVS2 | Excellent
From $521
Compare at $766
IGISave 70%1.25ct | Round | E | VVS1 | Ideal
From $488
Compare at $1,630
IGISave 67%1.25ct | Round | D | VVS2 | Ideal
From $465
Compare at $1,410
IGISave 27.2%1.25ct | Round | D | VS1 | Excellent
From $564
Compare at $775
IGISave 53.7%1.25ct | Round | E | VS2 | Ideal
From $611
Compare at $1,319
IGISave 56%1.25ct | Round | D | VS2 | Ideal
From $404
Compare at $920
Entry pricing in this category starts around $339.
What to Know When Shopping for 1.3 Carat Round Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $5,243 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 $505 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 6,898 comparable stones in this segment. Prices start around $339 and go up to $5,582.
Based on the latest market data, the average asking price is about $579 with a median around $505.
The observed spread is roughly $5,243 across tracked listings, which is about 93.9% 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 $505, 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 9 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 $5,243 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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Tracking Lab Grown inventory for 1.3 carat Round diamonds.