1.5 Carat Round Lab Grown Diamond Prices Comparison
As of July 2026, 1.5 carat round lab grown diamonds usually range from $219 to $4,790, with an average price of $1,116.In the last month, prices for these diamonds are down 1.9%.Compare 57,639 verified listings across 14 retailers tracked by CaratRadar.
1.5 Carat Round Lab Grown Diamond Market Overview
CaratRadar currently tracks 57,639 verified 1.5-carat round lab grown diamonds listed across 14 online retailers. Prices in this segment range from $219 to $4,790, with an average asking price of $1,116 and a median of $975.
The price spread of $4,571 (95.4% 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.
57,639 diamonds tracked in this segment
Price range: $219 to $4,790
Average price: $1,116
Median price: $975
Available across 14 retailers
Savings potential: up to 95.4%
Price Range Overview
As of Jul 13, 2026Real market range for this carat, shape, and diamond type.
57,639
$219
$1,116
$975
$4,790
Price History
Price Comparison Matrix
Live Listings
See all listingsCompare current retailer offers for this exact segment and open any listing for full details.
IGI | 1.52ct | Round | F | SI2 | Excellent
From $219
Compare at $740
Save 75.1%IGI | 1.5ct | Round | F | SI1 | Excellent
From $232
Compare at $930
Save 77.1%IGI | 1.5ct | Round | G | SI1 | Excellent
From $232
Compare at $1,013
Save 78.3%IGI | 1.51ct | Round | G | VS2 | Fair
From $234
Compare at $1,080
Save 75.1%IGI | 1.55ct | Round | G | SI1 | Ideal
From $234
Compare at $940
Save 74.5%IGI | 1.5ct | Round | F | SI1 | Ideal
From $237
Compare at $930
IGI | 1.51ct | Round | F | SI1 | Ideal
From $239
Compare at $940
Save 74.6%IGI | 1.51ct | Round | F | SI1 | Ideal
From $239
Compare at $940
Save 73%IGI | 1.52ct | Round | E | SI1 | Ideal
From $241
Compare at $892
IGI | 1.51ct | Round | F | SI1 | Ideal
From $244
Compare at $1,090
Save 64.2%IGI | 1.53ct | Round | G | VS2 | Excellent
From $244
Compare at $682
Save 77.6%IGI | 1.52ct | Round | F | SI1 | Excellent
From $246
Compare at $1,100
IGI | 1.53ct | Round | F | SI1 | Excellent
From $248
Compare at $950
Save 75.4%IGI | 1.55ct | Round | F | SI1 | Ideal
From $248
Compare at $1,010
Save 66.8%IGI | 1.59ct | Round | G | VS1 | Ideal
From $250
Compare at $753
Save 74.9%IGI | 1.56ct | Round | G | SI1 | Ideal
From $251
Compare at $1,000
Save 76.7%IGI | 1.52ct | Round | G | SI1 | Excellent
From $252
Compare at $1,080
Save 65.4%IGI | 1.56ct | Round | G | VS1 | Ideal
From $252
Compare at $729
Save 67.9%IGI | 1.59ct | Round | G | VVS2 | Excellent
From $253
Compare at $788
Save 67.9%IGI | 1.59ct | Round | G | VVS2 | Ideal
From $253
Compare at $788
Save 66.4%IGI | 1.59ct | Round | G | VS1 | Ideal
From $253
Compare at $754
Save 66.4%IGI | 1.59ct | Round | G | VS1 | Ideal
From $253
Compare at $754
Save 75.9%IGI | 1.6ct | Round | F | SI1 | Ideal
From $253
Compare at $1,050
Save 63.5%IGI | 1.51ct | Round | E | VS2 | Ideal
From $253
Compare at $693
Save 74.2%IGI | 1.5ct | Round | F | SI1 | Ideal
From $253
Compare at $980
Save 61.5%IGI | 1.5ct | Round | G | VS2 | Ideal
From $254
Compare at $660
Save 60%IGI | 1.51ct | Round | D | SI1 | Excellent
From $255
Compare at $638
Save 68%IGI | 1.6ct | Round | G | VVS2 | Excellent
From $255
Compare at $797
Save 75.2%IGI | 1.5ct | Round | F | SI1 | Ideal
From $255
Compare at $1,030
Save 78.8%IGI | 1.59ct | Round | F | SI1 | Ideal
From $255
Compare at $1,200
Save 63.4%IGI | 1.52ct | Round | F | VS2 | Ideal
From $255
Compare at $697
Save 64.5%IGI | 1.51ct | Round | G | VVS2 | Excellent
From $255
Compare at $719
Save 64.5%IGI | 1.51ct | Round | G | VVS2 | Excellent
From $255
Compare at $719
Save 74.4%IGI | 1.52ct | Round | E | SI1 | Excellent
From $256
Compare at $1,000
Save 59.5%IGI | 1.52ct | Round | E | SI1 | Excellent
From $256
Compare at $632
Save 59.5%IGI | 1.52ct | Round | E | SI1 | Excellent
From $256
Compare at $632
Save 62.4%IGI | 1.5ct | Round | G | VS1 | Excellent
From $256
Compare at $681
Save 64.9%IGI | 1.52ct | Round | G | VVS2 | Ideal
From $256
Compare at $729
Save 63.3%IGI | 1.51ct | Round | H | VVS2 | Ideal
From $257
Compare at $701
Save 63.3%IGI | 1.53ct | Round | E | VS2 | Ideal
From $257
Compare at $701
Save 75.8%IGI | 1.54ct | Round | F | SI1 | Ideal
From $257
Compare at $1,060
Save 64.3%IGI | 1.53ct | Round | F | VS2 | Ideal
From $258
Compare at $723
Save 60.4%IGI | 1.53ct | Round | F | SI1 | Excellent
From $258
Compare at $651
Save 75.7%IGI | 1.53ct | Round | E | SI1 | Ideal
From $258
Compare at $1,060
Save 65.2%IGI | 1.55ct | Round | F | VS2 | Ideal
From $258
Compare at $741
Save 73.9%IGI | 1.5ct | Round | E | SI1 | Excellent
From $258
Compare at $990
Save 75.2%IGI | 1.54ct | Round | G | SI1 | Ideal
From $258
Compare at $1,040
Save 72.8%IGI | 1.56ct | Round | E | SI1 | Ideal
From $258
Compare at $950
Save 72.8%IGI | 1.5ct | Round | E | SI1 | Excellent
From $258
Compare at $948
Save 63.4%IGI | 1.5ct | Round | D | VS2 | Ideal
From $258
Compare at $704
Entry pricing in this category starts around $219.
What to Know When Shopping for 1.5 Carat Round Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $4,571 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 $975 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 57,639 comparable stones in this segment. Prices start around $219 and go up to $4,790.
Based on the latest market data, the average asking price is about $1,116 with a median around $975.
The observed spread is roughly $4,571 across tracked listings, which is about 95.4% from highest to lowest offer in this bucket.
We refresh pricing data daily so these pages stay current with market changes.
Based on completed market data, the fair market benchmark is $1,116. The median price is $975, so offers between the median and fair benchmark can be reasonable, while reputable listings below the median may be especially competitive.
We currently track this stone category across 14 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 $4,571 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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