1.8 Carat Lab Grown Diamond Prices Comparison
As of February 2026, the average price of a 1.8 carat lab grown diamond is $937.1.8 carat diamonds can cost anywhere from $317 to $69,818 depending on shape, color, clarity, and other factors.In the last month, prices for these diamonds are down 1.7%.Compare 15,712 verified listings across 12 retailers in the tables below.
1.8 Carat Lab Grown Diamond Market Overview
CaratRadar currently tracks 15,712 verified 1.8-carat lab grown diamonds listed across 12 online retailers. Prices in this segment range from $317 to $69,818, with an average asking price of $937 and a median of $695.
The price spread of $69,501 (99.5% 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.
15,712 diamonds tracked in this segment
Price range: $317 to $69,818
Average price: $937
Median price: $695
Available across 12 retailers
Savings potential: up to 99.5%
Price Range Overview
As of Feb 26, 2026Real market range for this carat, shape, and diamond type.
15,712
$317
$937
$695
$69,818
Price History
Price Comparison Matrix
1.8 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.
IGISave 80.7%1.75ct | Antique | D | VS1 | Ideal
From $671
Compare at $3,480
IGISave 85.5%1.75ct | Antique | E | IF | Ideal
From $984
Compare at $6,790
IGISave 80.8%1.75ct | Antique | E | VVS2 | Ideal
From $674
Compare at $3,520
IGISave 83.4%1.76ct | Antique | D | VVS2 | Ideal
From $708
Compare at $4,270
IGISave 65.4%1.76ct | Antique | D | VVS2 | Ideal
From $803
Compare at $2,320
GIASave 78.7%1.79ct | Antique | E | VS1 | Ideal
From $1,096
Compare at $5,150
IGISave 80%1.79ct | Antique | E | VVS1 | Ideal
From $868
Compare at $4,330
IGISave 81.9%1.8ct | Antique | E | VVS1 | Ideal
From $813
Compare at $4,480
IGISave 70.8%1.82ct | Antique | E | VVS1 | Ideal
From $1,251
Compare at $4,280
IGISave 82.9%1.82ct | Antique | D | VVS2 | Ideal
From $755
Compare at $4,420
GIASave 79%1.82ct | Antique | E | VVS2 | Ideal
From $1,177
Compare at $5,620
IGISave 87.3%1.84ct | Antique | E | IF | Ideal
From $1,024
Compare at $8,030
IGISave 80.1%1.85ct | Antique | D | VVS1 | Ideal
From $864
Compare at $4,340
IGISave 73%1.85ct | Antique | E | VVS2 | Ideal
From $1,060
Compare at $3,930
IGISave 68.7%1.85ct | Antique | D | VVS2 | Ideal
From $990
Compare at $3,160
IGISave 78.2%1.75ct | Asscher | E | VS2 | Ideal
From $517
Compare at $2,370
IGISave 78.2%1.75ct | Asscher | F | VS2 | Ideal
From $517
Compare at $2,370
IGISave 78.2%1.75ct | Asscher | E | VS2 | Ideal
From $517
Compare at $2,370
IGISave 72.5%1.75ct | Asscher | G | VS1 | Very Good
From $534
Compare at $1,940
IGISave 56.8%1.75ct | Asscher | D | VVS1 | Ideal
From $660
Compare at $1,527
IGISave 74.2%1.75ct | Asscher | E | VS2 | Ideal
From $713
Compare at $2,760
IGISave 59.6%1.75ct | Asscher | E | VS1 | Excellent
From $910
Compare at $2,250
IGISave 84.3%1.75ct | Asscher | D | VVS1 | Ideal
From $560
Compare at $3,560
IGISave 61.1%1.75ct | Asscher | E | VS1 | Excellent
From $910
Compare at $2,340
IGISave 72.7%1.75ct | Asscher | G | VS2 | Very Good
From $519
Compare at $1,900
IGISave 72.2%1.75ct | Asscher | G | VVS2 | Very Good
From $567
Compare at $2,040
IGISave 74.4%1.75ct | Asscher | E | VS1 | Ideal
From $885
Compare at $3,460
IGISave 77.4%1.75ct | Asscher | F | VVS2 | Ideal
From $500
Compare at $2,210
IGISave 51.4%1.75ct | Asscher | E | VVS2 | Ideal
From $1,847
Compare at $3,800
IGISave 74.8%1.75ct | Asscher | D | VS1 | Excellent
From $853
Compare at $3,385
IGISave 73.9%1.75ct | Asscher | D | VVS2 | Ideal
From $661
Compare at $2,530
IGISave 83.8%1.75ct | Asscher | E | VVS1 | Ideal
From $660
Compare at $4,070
IGISave 84.9%1.75ct | Asscher | D | VVS1 | Ideal
From $688
Compare at $4,560
IGISave 11.2%1.75ct | Asscher | E | VVS2 | Very Good
From $548
Compare at $617
IGISave 66.1%1.75ct | Asscher | E | VS2 | Very Good
From $456
Compare at $1,345
IGISave 81.6%1.75ct | Asscher | E | VS1 | Ideal
From $555
Compare at $3,020
IGISave 83.5%1.75ct | Asscher | D | VVS2 | Ideal
From $626
Compare at $3,800
IGISave 75.5%1.75ct | Asscher | E | VS1 | Ideal
From $745
Compare at $3,040
IGISave 73.1%1.75ct | Asscher | D | VS2 | Ideal
From $981
Compare at $3,650
IGISave 75.9%1.75ct | Asscher | G | VS2 | Ideal
From $548
Compare at $2,270
IGISave 73.1%1.75ct | Asscher | E | VVS2 | Ideal
From $1,023
Compare at $3,800
IGISave 73.1%1.75ct | Asscher | D | VS1 | Ideal
From $1,023
Compare at $3,800
IGISave 79.2%1.75ct | Asscher | D | VVS2 | Ideal
From $526
Compare at $2,530
IGISave 62.8%1.75ct | Asscher | D | VS1 | Very Good
From $602
Compare at $1,620
IGISave 78.3%1.75ct | Asscher | E | VVS2 | Very Good
From $482
Compare at $2,220
IGISave 20.4%1.75ct | Asscher | E | VS1 | Very Good
From $641
Compare at $805
IGISave 83.4%1.75ct | Asscher | D | VVS1 | Ideal
From $688
Compare at $4,140
IGISave 75.6%1.75ct | Asscher | E | VS1 | Excellent
From $1,246
Compare at $5,110
GIASave 67%1.75ct | Asscher | F | VS2 | Ideal
From $1,042
Compare at $3,160
IGISave 74.4%1.75ct | Asscher | G | VS1 | Ideal
From $528
Compare at $2,060
Entry pricing in this category starts around $317.
What to Know When Shopping for 1.8 Carat Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $69,501 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 $695 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 15,712 comparable stones in this segment. Prices start around $317 and go up to $69,818.
Based on the latest market data, the average asking price is about $937 with a median around $695.
The observed spread is roughly $69,501 across tracked listings, which is about 99.5% 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 $695, 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 $69,501 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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