1.5 Carat Lab Grown Diamond Prices Comparison
As of May 2026, the average price of a 1.5 carat lab grown diamond is $1,117.1.5 carat diamonds can cost anywhere from $182 to $22,131 depending on shape, color, clarity, and other factors.In the last month, prices for these diamonds are down 1%.Compare 144,731 verified listings across 14 retailers in the tables below.
1.5 Carat Lab Grown Diamond Market Overview
CaratRadar currently tracks 144,731 verified 1.5-carat lab grown diamonds listed across 14 online retailers. Prices in this segment range from $182 to $22,131, with an average asking price of $1,117 and a median of $914.
The price spread of $21,949 (99.2% 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.
144,731 diamonds tracked in this segment
Price range: $182 to $22,131
Average price: $1,117
Median price: $914
Available across 14 retailers
Savings potential: up to 99.2%
Price Range Overview
As of May 29, 2026Real market range for this carat, shape, and diamond type.
144,731
$182
$1,117
$914
$22,131
Price History
Price Comparison Matrix
1.5 Carat Lab Grown Diamond Prices by Shape
Shape-level averages for this carat and type. Open each shape page for full market detail.
Live Listings
See all listingsCompare current retailer offers for this exact segment and open any listing for full details.
Save 65.7%IGI | 1.5ct | Emerald | H | SI1 | Ideal
From $182
Compare at $530
Save 70.7%IGI | 1.52ct | Pear | E | SI2 | Ideal
From $186
Compare at $634
Save 68.2%IGI | 1.53ct | Radiant | D | VS1 | Very Good
From $209
Compare at $658
Save 68.1%IGI | 1.52ct | Radiant | D | SI1 | Very Good
From $211
Compare at $662
Save 59.1%IGI | 1.51ct | Radiant | F | VVS2 | Very Good
From $213
Compare at $521
Save 57.8%IGI | 1.5ct | Radiant | D | VS1 | Very Good
From $214
Compare at $507
Save 49.2%IGI | 1.5ct | Radiant | D | VS1 | Very Good
From $214
Compare at $421
Save 57.8%IGI | 1.5ct | Radiant | D | VS1 | Very Good
From $214
Compare at $507
Save 58.1%IGI | 1.53ct | Radiant | E | VS1 | Very Good
From $216
Compare at $515
Save 60.2%IGI | 1.51ct | Radiant | E | VVS2 | Very Good
From $216
Compare at $543
Save 60.2%IGI | 1.51ct | Radiant | E | VVS2 | Very Good
From $216
Compare at $543
IGI | 1.56ct | Emerald | FANCY | SI1 | Good
From $216
Compare at $579
Save 60.2%IGI | 1.51ct | Radiant | E | VVS2 | Very Good
From $216
Compare at $543
Save 65.8%IGI | 1.51ct | Radiant | D | VS1 | Ideal
From $216
Compare at $632
Save 65.8%IGI | 1.51ct | Radiant | D | VS1 | Ideal
From $216
Compare at $632
Save 60.5%IGI | 1.52ct | Radiant | E | VVS2 | Very Good
From $217
Compare at $550
Save 60.5%IGI | 1.52ct | Radiant | E | VVS2 | Very Good
From $217
Compare at $550
Save 60.9%IGI | 1.53ct | Radiant | E | VVS2 | Very Good
From $218
Compare at $557
Save 62.6%IGI | 1.53ct | Radiant | D | VS1 | Ideal
From $218
Compare at $583
Save 79.7%IGI | 1.55ct | Radiant | G | SI1 | Ideal
From $219
Compare at $1,080
Save 60.6%IGI | 1.51ct | Emerald | G | VS2 | Ideal
From $220
Compare at $559
Save 60.9%IGI | 1.54ct | Radiant | E | VVS2 | Very Good
From $220
Compare at $563
Save 62.5%IGI | 1.55ct | Radiant | D | VS1 | Ideal
From $221
Compare at $590
Save 61.3%IGI | 1.55ct | Radiant | E | VVS2 | Very Good
From $221
Compare at $571
Save 59%IGI | 1.55ct | Radiant | D | VS1 | Very Good
From $221
Compare at $539
Save 59%IGI | 1.55ct | Radiant | D | VS1 | Very Good
From $221
Compare at $539
Save 46.2%IGI | 1.56ct | Cushion | H | VVS2 | Ideal
From $223
Compare at $414
Save 59.2%IGI | 1.56ct | Radiant | D | VS1 | Ideal
From $223
Compare at $546
Save 60.9%IGI | 1.59ct | Radiant | F | VVS2 | Very Good
From $224
Compare at $573
Save 49.1%IGI | 1.57ct | Radiant | D | VS1 | Very Good
From $224
Compare at $440
Save 70.9%IGI | 1.5ct | Emerald | G | VS2 | Very Good
From $225
Compare at $774
Save 59.9%IGI | 1.5ct | Emerald | G | VS2 | Excellent
From $225
Compare at $561
Save 70.9%IGI | 1.5ct | Emerald | G | VS2 | Excellent
From $225
Compare at $774
Save 70.9%IGI | 1.5ct | Emerald | G | VS2 | Excellent
From $225
Compare at $774
Save 70.9%IGI | 1.5ct | Emerald | G | VS2 | Excellent
From $225
Compare at $774
Save 70.9%IGI | 1.5ct | Emerald | G | VS2 | Very Good
From $225
Compare at $774
Save 70.9%IGI | 1.5ct | Emerald | G | VS2 | Excellent
From $225
Compare at $774
Save 70.9%IGI | 1.5ct | Emerald | G | VS2 | Excellent
From $225
Compare at $774
Save 70.9%IGI | 1.5ct | Emerald | G | VS2 | Very Good
From $225
Compare at $774
Save 62.7%IGI | 1.55ct | Radiant | D | VVS2 | Very Good
From $225
Compare at $604
Save 57.9%IGI | 1.53ct | Emerald | F | VVS2 | Very Good
From $225
Compare at $535
Save 63%IGI | 1.56ct | Radiant | D | VVS2 | Very Good
From $226
Compare at $611
Save 70.5%IGI | 1.56ct | Radiant | D | VVS2 | Very Good
From $226
Compare at $766
Save 61.7%IGI | 1.51ct | Emerald | H | VS1 | Ideal
From $227
Compare at $592
Save 75.3%IGI | 1.51ct | Emerald | E | SI1 | Ideal
From $227
Compare at $920
Save 54%IGI | 1.58ct | Emerald | G | VS2 | Ideal
From $227
Compare at $494
Save 60%IGI | 1.51ct | Emerald | G | VS2 | Excellent
From $227
Compare at $568
Save 70.9%IGI | 1.51ct | Emerald | G | VS2 | Excellent
From $227
Compare at $780
Save 70.9%IGI | 1.51ct | Emerald | G | VS2 | Excellent
From $227
Compare at $780
Save 70.9%IGI | 1.51ct | Emerald | G | VS2 | Excellent
From $227
Compare at $780
Entry pricing in this category starts around $182.
What to Know When Shopping for 1.5 Carat Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $21,949 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 $914 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.
Frequently Asked Questions
We currently track 144,731 comparable stones in this segment. Prices start around $182 and go up to $22,131.
Based on the latest market data, the average asking price is about $1,117 with a median around $914.
The observed spread is roughly $21,949 across tracked listings, which is about 99.2% 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 $1,117. The median price is $914, 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 $21,949 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.
1.5 Carat Round Lab Grown Diamond Prices
1.5 Carat Oval Lab Grown Diamond Prices
1.5 Carat Pear Lab Grown Diamond Prices
1.5 Carat Marquise Lab Grown Diamond Prices
1.5 Carat Emerald Lab Grown Diamond Prices
1.5 Carat Radiant Lab Grown Diamond Prices
1.5 Carat Cushion Lab Grown Diamond Prices
1.5 Carat Princess Lab Grown Diamond Prices
1.5 Carat Heart Lab Grown Diamond Prices
1.5 Carat Asscher Lab Grown Diamond Prices
Tracking Lab Grown inventory for 1.5 carat all-shape diamonds.