1.8 Carat Round Lab Grown Diamond Prices Comparison
As of July 2026, 1.8 carat round lab grown diamonds usually range from $277 to $7,475, with an average price of $1,327.In the last month, prices for these diamonds are down 1.2%.Compare 4,499 verified listings across 13 retailers tracked by CaratRadar.
1.8 Carat Round Lab Grown Diamond Market Overview
CaratRadar currently tracks 4,499 verified 1.8-carat round lab grown diamonds listed across 13 online retailers. Prices in this segment range from $277 to $7,475, with an average asking price of $1,327 and a median of $1,108.
The price spread of $7,198 (96.3% 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.
4,499 diamonds tracked in this segment
Price range: $277 to $7,475
Average price: $1,327
Median price: $1,108
Available across 13 retailers
Savings potential: up to 96.3%
Price Range Overview
As of Jul 13, 2026Real market range for this carat, shape, and diamond type.
4,499
$277
$1,327
$1,108
$7,475
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 70.8%IGI | 1.85ct | Round | G | VS1 | Excellent
From $291
Compare at $998
Save 71.8%IGI | 1.89ct | Round | G | VS1 | Excellent
From $293
Compare at $1,039
Save 70.9%IGI | 1.81ct | Round | G | VVS2 | Excellent
From $293
Compare at $1,006
Save 76%IGI | 1.81ct | Round | H | VS1 | Excellent
From $293
Compare at $1,220
Save 71.1%IGI | 1.82ct | Round | G | VVS2 | Excellent
From $294
Compare at $1,016
Save 70.5%IGI | 1.83ct | Round | F | VS1 | Ideal
From $296
Compare at $1,003
Save 76.5%IGI | 1.87ct | Round | E | SI1 | Excellent
From $298
Compare at $1,270
Save 77.9%IGI | 1.89ct | Round | E | SI1 | Excellent
From $298
Compare at $1,350
Save 79.9%IGI | 1.81ct | Round | G | VS2 | Excellent
From $301
Compare at $1,500
Save 75.1%IGI | 1.86ct | Round | G | VS2 | Ideal
From $301
Compare at $1,210
Save 78.4%IGI | 1.85ct | Round | E | SI1 | Ideal
From $303
Compare at $1,400
Save 62.5%IGI | 1.82ct | Round | F | VS1 | Ideal
From $306
Compare at $816
Save 75.1%IGI | 1.89ct | Round | G | VS2 | Ideal
From $306
Compare at $1,230
Save 72.8%IGI | 1.86ct | Round | F | VVS2 | Excellent
From $309
Compare at $1,137
Save 70%IGI | 1.83ct | Round | G | VVS2 | Ideal
From $309
Compare at $1,030
Save 71.6%IGI | 1.82ct | Round | F | VVS2 | Excellent
From $311
Compare at $1,094
Save 77%IGI | 1.82ct | Round | E | VS2 | Ideal
From $311
Compare at $1,350
Save 72.3%IGI | 1.85ct | Round | F | VVS2 | Excellent
From $312
Compare at $1,127
Save 74.7%IGI | 1.81ct | Round | E | VS2 | Excellent
From $314
Compare at $1,242
Save 78.3%IGI | 1.84ct | Round | F | VS2 | Excellent
From $314
Compare at $1,450
Save 70.1%IGI | 1.89ct | Round | E | VS1 | Ideal
From $314
Compare at $1,049
Save 68.6%IGI | 1.84ct | Round | E | VS1 | Ideal
From $314
Compare at $999
Save 71.7%IGI | 1.84ct | Round | H | VS1 | Ideal
From $316
Compare at $1,115
Save 77.4%IGI | 1.87ct | Round | F | VS2 | Excellent
From $316
Compare at $1,400
Save 70.5%IGI | 1.89ct | Round | F | VS1 | Ideal
From $316
Compare at $1,070
Save 74.8%IGI | 1.84ct | Round | G | VS2 | Excellent
From $317
Compare at $1,260
Save 77.4%IGI | 1.83ct | Round | D | VS2 | Excellent
From $317
Compare at $1,400
Save 76%IGI | 1.86ct | Round | H | VS1 | Excellent
From $317
Compare at $1,320
Save 69.8%IGI | 1.84ct | Round | F | VS1 | Excellent
From $317
Compare at $1,049
Save 63%IGI | 1.83ct | Round | E | VVS2 | Ideal
From $317
Compare at $857
Save 76.9%IGI | 1.83ct | Round | F | VS2 | Ideal
From $317
Compare at $1,370
Save 73.3%IGI | 1.84ct | Round | G | VS1 | Ideal
From $319
Compare at $1,196
Save 62.9%IGI | 1.88ct | Round | E | VS1 | Ideal
From $319
Compare at $859
Save 67.5%IGI | 1.81ct | Round | G | VS1 | Excellent
From $319
Compare at $981
Save 69.3%IGI | 1.86ct | Round | F | VS1 | Ideal
From $319
Compare at $1,040
Save 61.8%IGI | 1.85ct | Round | E | VVS2 | Ideal
From $321
Compare at $841
Save 62.9%IGI | 1.85ct | Round | E | VVS2 | Ideal
From $321
Compare at $865
Save 69.2%IGI | 1.88ct | Round | E | VS1 | Excellent
From $321
Compare at $1,041
Save 76.7%IGI | 1.86ct | Round | H | VS1 | Ideal
From $321
Compare at $1,380
Save 68.2%IGI | 1.84ct | Round | G | VS1 | Excellent
From $321
Compare at $1,011
Save 76.2%IGI | 1.88ct | Round | G | VS2 | Excellent
From $321
Compare at $1,350
Save 67.9%IGI | 1.87ct | Round | H | VS1 | Ideal
From $322
Compare at $1,003
Save 79.1%IGI | 1.87ct | Round | E | SI1 | Ideal
From $322
Compare at $1,540
Save 79.4%IGI | 1.81ct | Round | G | VVS2 | Ideal
From $322
Compare at $1,560
Save 79.9%IGI | 1.81ct | Round | E | VS1 | Excellent
From $322
Compare at $1,600
Save 68%IGI | 1.81ct | Round | F | VS2 | Ideal
From $323
Compare at $1,009
Save 68.1%IGI | 1.84ct | Round | G | VS1 | Ideal
From $323
Compare at $1,011
Save 67.9%IGI | 1.83ct | Round | D | VS1 | Ideal
From $323
Compare at $1,007
Save 65.9%IGI | 1.89ct | Round | G | SI2 | Ideal
From $326
Compare at $955
Save 77.8%IGI | 1.89ct | Round | H | VS1 | Excellent
From $326
Compare at $1,470
Entry pricing in this category starts around $277.
What to Know When Shopping for 1.8 Carat Round Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $7,198 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 $1,108 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 4,499 comparable stones in this segment. Prices start around $277 and go up to $7,475.
Based on the latest market data, the average asking price is about $1,327 with a median around $1,108.
The observed spread is roughly $7,198 across tracked listings, which is about 96.3% 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 $1,327. The median price is $1,108, 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 13 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 $7,198 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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