1.5 Carat Radiant Lab Grown Diamond Prices Comparison
As of April 2026, 1.5 carat radiant lab grown diamonds usually range from $263 to $5,130, with an average price of $1,111.In the last month, prices for these diamonds are down 0.8%.Compare 10,633 verified listings across 11 retailers tracked by CaratRadar.
1.5 Carat Radiant Lab Grown Diamond Market Overview
CaratRadar currently tracks 10,633 verified 1.5-carat radiant lab grown diamonds listed across 11 online retailers. Prices in this segment range from $263 to $5,130, with an average asking price of $1,111 and a median of $920.
The price spread of $4,867 (94.9% 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.
10,633 diamonds tracked in this segment
Price range: $263 to $5,130
Average price: $1,111
Median price: $920
Available across 11 retailers
Savings potential: up to 94.9%
Price Range Overview
As of Apr 14, 2026Real market range for this carat, shape, and diamond type.
10,633
$263
$1,111
$920
$5,130
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 72%GCAL | 1.5ct | Radiant | G | VS1 | Excellent
From $723
Compare at $2,580
Save 74.7%GCAL | 1.5ct | Radiant | D | VVS2 | Excellent
From $818
Compare at $3,230
Save 74.5%GCAL | 1.5ct | Radiant | D | VS2 | Excellent
From $759
Compare at $2,980
Save 74.5%GCAL | 1.5ct | Radiant | D | VS1 | Excellent
From $791
Compare at $3,100
Save 72.1%GCAL | 1.5ct | Radiant | E | VS1 | Excellent
From $798
Compare at $2,860
Save 72.1%GCAL | 1.5ct | Radiant | F | VS1 | Excellent
From $763
Compare at $2,730
Save 27.9%GIA | 1.5ct | Radiant | H | VVS2 | Excellent
From $886
Compare at $1,229
Save 72.2%GIA | 1.5ct | Radiant | G | VS2 | Ideal
From $1,017
Compare at $3,660
Save 40%GIA | 1.5ct | Radiant | F | VS1 | Ideal
From $1,255
Compare at $2,090
Save 75.7%GIA | 1.5ct | Radiant | G | VS1 | Excellent
From $774
Compare at $3,190
Save 33.2%GIA | 1.5ct | Radiant | D | VS1 | Excellent
From $949
Compare at $1,422
GIA | 1.5ct | Radiant | F | VS2 | Excellent
From $756
Compare at $760
Save 26.3%GIA | 1.5ct | Radiant | D | VS1 | Excellent
From $1,018
Compare at $1,382
Save 40.2%GIA | 1.5ct | Radiant | D | VS2 | Very Good
From $2,565
Compare at $4,290
Save 34.5%GIA | 1.5ct | Radiant | D | VVS2 | Excellent
From $3,065
Compare at $4,680
Save 75.4%GIA | 1.5ct | Radiant | F | VVS1 | Excellent
From $1,111
Compare at $4,510
Save 38.5%GIA | 1.5ct | Radiant | D | VS1 | Excellent
From $2,185
Compare at $3,550
Save 52.7%GIA | 1.5ct | Radiant | H | VS2 | Ideal
From $782
Compare at $1,654
Save 41.2%GIA | 1.5ct | Radiant | F | VS2 | Ideal
From $1,088
Compare at $1,850
Save 80.2%GIA | 1.5ct | Radiant | D | VVS2 | Excellent
From $1,261
Compare at $6,380
Save 65.2%GIA | 1.5ct | Radiant | E | VVS1 | Excellent
From $1,582
Compare at $4,540
Save 30.4%GIA | 1.5ct | Radiant | D | VVS2 | Excellent
From $997
Compare at $1,432
Save 30.4%GIA | 1.5ct | Radiant | D | VVS2 | Excellent
From $997
Compare at $1,432
Save 78.5%GIA | 1.5ct | Radiant | E | VVS1 | Excellent
From $988
Compare at $4,600
Save 73.7%GIA | 1.5ct | Radiant | E | VVS1 | Excellent
From $1,528
Compare at $5,820
Save 42.6%GIA | 1.5ct | Radiant | G | VS1 | Ideal
From $1,050
Compare at $1,830
Save 33.2%GIA | 1.5ct | Radiant | E | VVS2 | Excellent
From $949
Compare at $1,422
Save 18.7%GIA | 1.5ct | Radiant | E | VS1 | Excellent
From $1,069
Compare at $1,314
IGI | 1.5ct | Radiant | D | VVS1 | Very Good
From $2,311
Compare at $2,385
Save 73%IGI | 1.5ct | Radiant | D | SI1 | Very Good
From $470
Compare at $1,740
Save 74.4%IGI | 1.5ct | Radiant | G | VS2 | Ideal
From $685
Compare at $2,680
Save 61.7%IGI | 1.5ct | Radiant | G | VS2 | Excellent
From $877
Compare at $2,290
Save 43.3%IGI | 1.5ct | Radiant | G | VS1 | Ideal
From $4,048
Compare at $7,142
Save 84.3%IGI | 1.5ct | Radiant | G | VS1 | Ideal
From $407
Compare at $2,600
Save 41.1%IGI | 1.5ct | Radiant | G | VS2 | Ideal
From $3,751
Compare at $6,365
Save 41.1%IGI | 1.5ct | Radiant | G | VS2 | Ideal
From $3,751
Compare at $6,365
Save 39.6%IGI | 1.5ct | Radiant | H | VS1 | Ideal
From $3,706
Compare at $6,135
Save 43.3%IGI | 1.5ct | Radiant | G | VS1 | Ideal
From $4,048
Compare at $7,142
Save 75.5%IGI | 1.5ct | Radiant | F | SI1 | Very Good
From $394
Compare at $1,610
Save 45.8%IGI | 1.5ct | Radiant | H | SI2 | Ideal
From $1,044
Compare at $1,927
Save 43.5%IGI | 1.5ct | Radiant | I | VS1 | Ideal
From $540
Compare at $956
Save 44.6%IGI | 1.5ct | Radiant | F | VS1 | Ideal
From $4,334
Compare at $7,823
Save 41.1%IGI | 1.5ct | Radiant | G | VS2 | Ideal
From $3,751
Compare at $6,365
Save 39.6%IGI | 1.5ct | Radiant | H | VS1 | Ideal
From $3,706
Compare at $6,135
Save 84.3%IGI | 1.5ct | Radiant | G | VS1 | Ideal
From $407
Compare at $2,600
Save 38.1%IGI | 1.5ct | Radiant | H | VS2 | Ideal
From $3,422
Compare at $5,525
Save 41.1%IGI | 1.5ct | Radiant | G | VS2 | Ideal
From $3,751
Compare at $6,365
Save 38.1%IGI | 1.5ct | Radiant | H | VS2 | Ideal
From $3,422
Compare at $5,525
Save 38.4%IGI | 1.5ct | Radiant | I | SI1 | Ideal
From $2,858
Compare at $4,640
Save 38.1%IGI | 1.5ct | Radiant | F | SI1 | Ideal
From $3,469
Compare at $5,601
Entry pricing in this category starts around $263.
What to Know When Shopping for 1.5 Carat Radiant Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $4,867 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 $920 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 10,633 comparable stones in this segment. Prices start around $263 and go up to $5,130.
Based on the latest market data, the average asking price is about $1,111 with a median around $920.
The observed spread is roughly $4,867 across tracked listings, which is about 94.9% 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 $920, 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 11 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 $4,867 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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