1.5 Carat Round Lab Grown Diamond Prices Comparison
As of February 2026, 1.5 carat round lab grown diamonds usually range from $422 to $26,186, with an average price of $786.In the last month, prices for these diamonds are down 4%.Compare 22,661 verified listings across 12 retailers tracked by CaratRadar.
1.5 Carat Round Lab Grown Diamond Market Overview
CaratRadar currently tracks 22,661 verified 1.5-carat round lab grown diamonds listed across 12 online retailers. Prices in this segment range from $422 to $26,186, with an average asking price of $786 and a median of $669.
The price spread of $25,764 (98.4% 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.
22,661 diamonds tracked in this segment
Price range: $422 to $26,186
Average price: $786
Median price: $669
Available across 12 retailers
Savings potential: up to 98.4%
Price Range Overview
As of Feb 28, 2026Real market range for this carat, shape, and diamond type.
22,661
$422
$786
$669
$26,186
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 66.1%1.45ct | Round | I | SI1 | Ideal
From $1,299
Compare at $3,828
IGISave 62.6%1.45ct | Round | I | VS1 | Ideal
From $1,475
Compare at $3,945
IGISave 37.2%1.45ct | Round | F | VS1 | Ideal
From $476
Compare at $758
IGISave 70.5%1.45ct | Round | F | VS1 | Ideal
From $623
Compare at $2,110
IGISave 77.4%1.45ct | Round | F | VS1 | Ideal
From $476
Compare at $2,110
IGISave 69.8%1.45ct | Round | E | VS2 | Excellent
From $622
Compare at $2,060
IGISave 37.2%1.45ct | Round | E | VS1 | Ideal
From $476
Compare at $758
IGISave 37.2%1.45ct | Round | E | VS1 | Excellent
From $476
Compare at $758
IGISave 72.3%1.45ct | Round | E | VS1 | Excellent
From $648
Compare at $2,340
IGISave 37.2%1.45ct | Round | E | VS1 | Very Good
From $476
Compare at $758
IGISave 72.4%1.45ct | Round | F | VS2 | Excellent
From $607
Compare at $2,200
IGISave 47.3%1.45ct | Round | E | VVS2 | Ideal
From $588
Compare at $1,115
IGISave 79.7%1.45ct | Round | E | VS1 | Ideal
From $476
Compare at $2,340
IGISave 66.1%1.45ct | Round | E | VVS2 | Excellent
From $594
Compare at $1,750
GCALSave 76.3%1.45ct | Round | D | IF | Excellent
From $1,340
Compare at $5,660
GIASave 78%1.45ct | Round | D | VS1 | Excellent
From $685
Compare at $3,120
GIASave 66.4%1.45ct | Round | F | VS1 | Very Good
From $569
Compare at $1,694
GIASave 61.1%1.45ct | Round | E | VVS1 | Excellent
From $898
Compare at $2,310
IGISave 65.5%1.45ct | Round | J | VS2 | Ideal
From $1,183
Compare at $3,431
IGISave 61.7%1.45ct | Round | F | VS2 | Ideal
From $1,972
Compare at $5,148
IGISave 18%1.45ct | Round | E | VS1 | Ideal
From $622
Compare at $758
IGISave 73.1%1.45ct | Round | F | SI1 | Excellent
From $533
Compare at $1,980
IGISave 72.3%1.45ct | Round | E | VS1 | Excellent
From $648
Compare at $2,340
IGISave 72.4%1.45ct | Round | E | VS2 | Excellent
From $624
Compare at $2,260
IGISave 70.5%1.45ct | Round | F | VS1 | Excellent
From $623
Compare at $2,110
IGISave 17.8%1.45ct | Round | F | VS1 | Ideal
From $623
Compare at $758
IGISave 17.9%1.45ct | Round | F | VVS2 | Excellent
From $699
Compare at $851
IGISave 68.4%1.45ct | Round | E | VS1 | Ideal
From $492
Compare at $1,560
IGISave 59.7%1.45ct | Round | D | VVS2 | Ideal
From $593
Compare at $1,474
IGISave 72.4%1.45ct | Round | F | VS2 | Excellent
From $607
Compare at $2,200
IGISave 17.9%1.45ct | Round | E | VS2 | Excellent
From $622
Compare at $758
IGISave 44%1.45ct | Round | F | VS1 | Ideal
From $667
Compare at $1,190
IGISave 59.8%1.45ct | Round | E | VVS2 | Ideal
From $585
Compare at $1,457
IGISave 59.8%1.45ct | Round | E | VVS2 | Ideal
From $585
Compare at $1,457
IGISave 72.4%1.45ct | Round | F | VS1 | Excellent
From $624
Compare at $2,260
IGISave 72.4%1.45ct | Round | F | VS1 | Excellent
From $624
Compare at $2,260
IGISave 56.1%1.45ct | Round | D | VVS2 | Ideal
From $536
Compare at $1,223
IGISave 77.4%1.45ct | Round | F | VS1 | Ideal
From $476
Compare at $2,110
IGISave 72.3%1.45ct | Round | E | VVS2 | Ideal
From $545
Compare at $1,970
IGISave 70.3%1.45ct | Round | D | VS1 | Ideal
From $484
Compare at $1,630
IGISave 72.1%1.45ct | Round | E | VVS2 | Excellent
From $627
Compare at $2,250
IGISave 74.2%1.45ct | Round | F | VVS2 | Excellent
From $616
Compare at $2,390
IGISave 79.8%1.45ct | Round | E | IF | Ideal
From $613
Compare at $3,030
IGISave 57.5%1.45ct | Round | D | VS2 | Ideal
From $685
Compare at $1,610
IGISave 65.3%1.45ct | Round | D | VS1 | Ideal
From $566
Compare at $1,630
IGISave 69.3%1.45ct | Round | E | VS1 | Ideal
From $498
Compare at $1,620
IGISave 72%1.45ct | Round | F | VS2 | Excellent
From $681
Compare at $2,430
IGISave 65.9%1.45ct | Round | D | VS1 | Excellent
From $597
Compare at $1,750
IGISave 68.4%1.45ct | Round | D | VS1 | Excellent
From $508
Compare at $1,610
IGISave 58.5%1.45ct | Round | E | VS1 | Excellent
From $648
Compare at $1,560
Entry pricing in this category starts around $422.
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 $25,764 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 $669 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 22,661 comparable stones in this segment. Prices start around $422 and go up to $26,186.
Based on the latest market data, the average asking price is about $786 with a median around $669.
The observed spread is roughly $25,764 across tracked listings, which is about 98.4% 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 $669, 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 12 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 $25,764 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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