1.8 Carat Round Lab Grown Diamond Prices Comparison
As of February 2026, 1.8 carat round lab grown diamonds usually range from $499 to $69,818, with an average price of $1,051.In the last month, prices for these diamonds are down 4.3%.Compare 4,816 verified listings across 11 retailers tracked by CaratRadar.
1.8 Carat Round Lab Grown Diamond Market Overview
CaratRadar currently tracks 4,816 verified 1.8-carat round lab grown diamonds listed across 11 online retailers. Prices in this segment range from $499 to $69,818, with an average asking price of $1,051 and a median of $734.
The price spread of $69,319 (99.3% 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.
4,816 diamonds tracked in this segment
Price range: $499 to $69,818
Average price: $1,051
Median price: $734
Available across 11 retailers
Savings potential: up to 99.3%
Price Range Overview
As of Feb 28, 2026Real market range for this carat, shape, and diamond type.
4,816
$499
$1,051
$734
$69,818
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 54.6%1.75ct | Round | I | VS1 | Ideal
From $1,104
Compare at $2,431
IGISave 64.6%1.75ct | Round | H | VS1 | Ideal
From $2,920
Compare at $8,244
IGISave 62.4%1.75ct | Round | J | SI1 | Ideal
From $1,950
Compare at $5,180
IGISave 63%1.75ct | Round | J | VS1 | Ideal
From $2,180
Compare at $5,887
IGISave 63.5%1.75ct | Round | I | SI2 | Ideal
From $2,000
Compare at $5,481
IGISave 63.4%1.75ct | Round | I | VS2 | Ideal
From $2,380
Compare at $6,495
IGISave 64.5%1.75ct | Round | I | SI1 | Ideal
From $2,160
Compare at $6,092
IGISave 62.4%1.75ct | Round | J | SI1 | Ideal
From $1,950
Compare at $5,180
IGISave 63.5%1.75ct | Round | I | VS1 | Ideal
From $2,530
Compare at $6,939
IGISave 63%1.75ct | Round | J | VS1 | Ideal
From $2,180
Compare at $5,887
IGISave 68.1%1.75ct | Round | F | IF | Ideal
From $659
Compare at $2,068
IGISave 74%1.75ct | Round | F | VVS2 | Excellent
From $824
Compare at $3,170
IGISave 63.7%1.75ct | Round | H | VS1 | Ideal
From $555
Compare at $1,529
IGISave 63.5%1.75ct | Round | I | VVS1 | Ideal
From $565
Compare at $1,550
IGISave 63.5%1.75ct | Round | H | VVS2 | Ideal
From $565
Compare at $1,550
IGISave 63.5%1.75ct | Round | H | VVS2 | Ideal
From $565
Compare at $1,550
GCALSave 73.9%1.75ct | Round | F | VS1 | Ideal
From $665
Compare at $2,545
GCALSave 74.7%1.75ct | Round | D | IF | Excellent
From $8,036
Compare at $31,760
GIASave 59.2%1.75ct | Round | I | VVS2 | Ideal
From $775
Compare at $1,900
GIASave 77%1.75ct | Round | D | VS1 | Excellent
From $1,128
Compare at $4,910
IGISave 64.5%1.75ct | Round | I | SI1 | Ideal
From $2,160
Compare at $6,092
IGISave 63%1.75ct | Round | J | VS1 | Ideal
From $2,180
Compare at $5,887
IGISave 63.4%1.75ct | Round | I | VS2 | Ideal
From $2,380
Compare at $6,495
IGISave 64.5%1.75ct | Round | I | SI1 | Ideal
From $2,160
Compare at $6,092
IGISave 63.3%1.75ct | Round | J | VVS2 | Ideal
From $2,310
Compare at $6,292
IGISave 63.5%1.75ct | Round | I | VS1 | Ideal
From $2,530
Compare at $6,939
IGISave 64.5%1.75ct | Round | I | SI1 | Ideal
From $2,160
Compare at $6,092
IGISave 62.2%1.75ct | Round | J | VS2 | Ideal
From $2,070
Compare at $5,482
IGISave 62.4%1.75ct | Round | J | SI1 | Ideal
From $1,950
Compare at $5,180
IGISave 63.5%1.75ct | Round | I | VS1 | Ideal
From $2,530
Compare at $6,939
IGISave 64.1%1.75ct | Round | I | VVS2 | Ideal
From $2,670
Compare at $7,441
IGISave 67.6%1.75ct | Round | E | VS1 | Ideal
From $631
Compare at $1,949
IGISave 13.4%1.75ct | Round | E | VS2 | Ideal
From $3,550
Compare at $4,100
IGISave 75.3%1.75ct | Round | G | VS1 | Ideal
From $1,095
Compare at $4,430
IGISave 58.8%1.75ct | Round | F | VS2 | Ideal
From $567
Compare at $1,376
IGISave 68.5%1.75ct | Round | E | VS1 | Excellent
From $678
Compare at $2,152
IGISave 54.6%1.75ct | Round | I | VVS2 | Excellent
From $1,103
Compare at $2,427
IGISave 54.6%1.75ct | Round | I | VS1 | Ideal
From $1,104
Compare at $2,431
IGISave 63.8%1.75ct | Round | G | VS1 | Ideal
From $572
Compare at $1,581
IGISave 64.3%1.75ct | Round | G | VVS2 | Ideal
From $586
Compare at $1,642
IGISave 63.5%1.75ct | Round | I | VVS2 | Ideal
From $565
Compare at $1,550
IGISave 63.4%1.75ct | Round | H | VS2 | Ideal
From $562
Compare at $1,534
IGISave 63.4%1.75ct | Round | H | VS2 | Ideal
From $562
Compare at $1,534
IGISave 65%1.75ct | Round | F | VVS2 | Ideal
From $608
Compare at $1,734
IGISave 63.5%1.75ct | Round | H | VVS2 | Ideal
From $565
Compare at $1,550
IGISave 67%1.75ct | Round | F | VVS2 | Ideal
From $4,130
Compare at $12,519
IGISave 60.7%1.75ct | Round | D | VS1 | Ideal
From $717
Compare at $1,827
IGISave 78.7%1.75ct | Round | H | VS1 | Ideal
From $525
Compare at $2,460
IGISave 67.4%1.75ct | Round | H | VS1 | Excellent
From $529
Compare at $1,620
IGISave 76.3%1.75ct | Round | E | VVS2 | Ideal
From $692
Compare at $2,925
Entry pricing in this category starts around $499.
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 $69,319 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 $734 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 4,816 comparable stones in this segment. Prices start around $499 and go up to $69,818.
Based on the latest market data, the average asking price is about $1,051 with a median around $734.
The observed spread is roughly $69,319 across tracked listings, which is about 99.3% 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 $734, 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 $69,319 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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