8.5 Carat Round Lab Grown Diamond Prices Comparison
As of February 2026, 8.5 carat round lab grown diamonds usually range from $2,110 to $22,594, with an average price of $4,360.In the last month, prices for these diamonds are down 3.3%.Compare 64 verified listings across 5 retailers tracked by CaratRadar.
8.5 Carat Round Lab Grown Diamond Market Overview
CaratRadar currently tracks 64 verified 8.5-carat round lab grown diamonds listed across 5 online retailers. Prices in this segment range from $2,110 to $22,594, with an average asking price of $4,360 and a median of $3,290.
The price spread of $20,484 (90.7% 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.
64 diamonds tracked in this segment
Price range: $2,110 to $22,594
Average price: $4,360
Median price: $3,290
Available across 5 retailers
Savings potential: up to 90.7%
Price Range Overview
As of Feb 28, 2026Real market range for this carat, shape, and diamond type.
64
$2,110
$4,360
$3,290
$22,594
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 83.6%8.46ct | Round | G | VS1 | Excellent
From $3,357
Compare at $20,463
IGISave 81.7%8.46ct | Round | D | VVS2 | Ideal
From $7,781
Compare at $42,440
IGISave 85.3%8.46ct | Round | E | VVS2 | Excellent
From $3,705
Compare at $25,120
IGISave 15.6%8.46ct | Round | F | VS1 | Excellent
From $3,292
Compare at $3,898
IGISave 52.4%8.47ct | Round | H | VS2 | Ideal
From $3,289
Compare at $6,915
IGISave 83.4%8.47ct | Round | E | VVS2 | Ideal
From $4,165
Compare at $25,150
IGISave 73%8.48ct | Round | E | VS2 | Ideal
From $3,629
Compare at $13,450
IGISave 55.8%8.48ct | Round | E | VS1 | Excellent
From $3,108
Compare at $7,035
IGISave 62.4%8.48ct | Round | E | VS1 | Excellent
From $2,783
Compare at $7,409
IGISave 85.2%8.48ct | Round | F | VS1 | Very Good
From $2,984
Compare at $20,130
GIASave 83.3%8.49ct | Round | D | VS2 | Excellent
From $10,040
Compare at $60,108
IGISave 85.2%8.49ct | Round | F | VS1 | Ideal
From $2,987
Compare at $20,150
IGISave 80.1%8.5ct | Round | G | VS2 | Ideal
From $2,994
Compare at $15,030
IGISave 83.8%8.5ct | Round | G | VS2 | Ideal
From $2,905
Compare at $17,950
IGISave 80.9%8.5ct | Round | F | VS2 | Ideal
From $3,508
Compare at $18,320
IGISave 84%8.5ct | Round | G | VS2 | Ideal
From $2,875
Compare at $17,950
IGISave 86.5%8.5ct | Round | E | VS1 | Ideal
From $2,975
Compare at $21,960
IGISave 81.9%8.5ct | Round | G | VS1 | Ideal
From $3,819
Compare at $21,110
IGISave 84.7%8.5ct | Round | F | VS1 | Ideal
From $3,076
Compare at $20,070
IGISave 85.5%8.5ct | Round | F | VVS2 | Ideal
From $3,281
Compare at $22,660
IGISave 47.2%8.5ct | Round | D | VS2 | Ideal
From $4,856
Compare at $9,197
IGISave 85%8.5ct | Round | E | VS2 | Ideal
From $2,952
Compare at $19,700
IGISave 62.6%8.5ct | Round | F | VVS2 | Excellent
From $3,013
Compare at $8,062
IGISave 80.6%8.51ct | Round | F | SI1 | Ideal
From $3,033
Compare at $15,600
IGISave 56.6%8.51ct | Round | E | SI1 | Ideal
From $4,831
Compare at $11,120
IGISave 72.2%8.51ct | Round | E | VVS1 | Ideal
From $7,235
Compare at $26,070
IGISave 88.4%8.51ct | Round | E | VVS2 | Ideal
From $3,898
Compare at $33,670
IGISave 62.3%8.51ct | Round | H | VS2 | Ideal
From $2,621
Compare at $6,946
IGISave 41.2%8.51ct | Round | H | VS2 | Ideal
From $2,651
Compare at $4,509
IGISave 73.4%8.51ct | Round | F | VS1 | Ideal
From $4,323
Compare at $16,270
IGISave 61.7%8.51ct | Round | F | VVS2 | Excellent
From $2,569
Compare at $6,703
IGISave 79%8.51ct | Round | F | VS2 | Excellent
From $2,858
Compare at $13,610
IGISave 86.1%8.51ct | Round | G | VVS2 | Ideal
From $2,767
Compare at $19,880
IGISave 72.2%8.51ct | Round | G | VS2 | Ideal
From $4,992
Compare at $17,970
IGISave 15%8.51ct | Round | F | VVS2 | Excellent
From $2,792
Compare at $3,285
IGISave 45.2%8.52ct | Round | G | SI1 | Ideal
From $4,837
Compare at $8,830
IGISave 73.1%8.52ct | Round | E | SI1 | Ideal
From $3,291
Compare at $12,230
GIASave 59.4%8.52ct | Round | G | VS1 | Ideal
From $10,728
Compare at $26,412
GIASave 49.7%8.52ct | Round | E | VVS2 | Ideal
From $11,928
Compare at $23,738
IGISave 86.6%8.52ct | Round | E | VS1 | Ideal
From $2,978
Compare at $22,160
IGISave 82.2%8.52ct | Round | F | VVS2 | Ideal
From $4,053
Compare at $22,710
IGISave 83.7%8.52ct | Round | E | VS1 | Ideal
From $3,592
Compare at $22,060
IGISave 84%8.52ct | Round | G | VS2 | Ideal
From $2,881
Compare at $17,990
IGISave 78.9%8.52ct | Round | G | VS2 | Ideal
From $2,396
Compare at $11,360
IGISave 61.7%8.52ct | Round | F | VVS2 | Excellent
From $2,572
Compare at $6,711
IGISave 62.4%8.53ct | Round | F | VS1 | Excellent
From $2,729
Compare at $7,257
IGISave 16%8.53ct | Round | E | SI1 | Excellent
From $2,110
Compare at $2,511
IGISave 83.8%8.53ct | Round | E | VVS2 | Ideal
From $4,097
Compare at $25,330
IGISave 80.4%8.53ct | Round | E | IF | Ideal
From $22,594
Compare at $115,167
IGISave 33.9%8.53ct | Round | D | VS1 | Excellent
From $6,422
Compare at $9,719
Entry pricing in this category starts around $2,110.
What to Know When Shopping for 8.5 Carat Round Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $20,484 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 $3,290 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 64 comparable stones in this segment. Prices start around $2,110 and go up to $22,594.
Based on the latest market data, the average asking price is about $4,360 with a median around $3,290.
The observed spread is roughly $20,484 across tracked listings, which is about 90.7% 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 $3,290, 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 5 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 $20,484 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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