8.6 Carat Round Lab Grown Diamond Prices Comparison
As of February 2026, 8.6 carat round lab grown diamonds usually range from $2,565 to $10,343, with an average price of $4,104.In the last month, prices for these diamonds are down 2.4%.Compare 37 verified listings across 4 retailers tracked by CaratRadar.
8.6 Carat Round Lab Grown Diamond Market Overview
CaratRadar currently tracks 37 verified 8.6-carat round lab grown diamonds listed across 4 online retailers. Prices in this segment range from $2,565 to $10,343, with an average asking price of $4,104 and a median of $3,633.
The price spread of $7,778 (75.2% 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.
37 diamonds tracked in this segment
Price range: $2,565 to $10,343
Average price: $4,104
Median price: $3,633
Available across 4 retailers
Savings potential: up to 75.2%
Price Range Overview
As of Feb 28, 2026Real market range for this carat, shape, and diamond type.
37
$2,565
$4,104
$3,633
$10,343
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 81.9%8.56ct | Round | G | VS1 | Ideal
From $3,846
Compare at $21,250
IGISave 83.2%8.56ct | Round | F | VS1 | Ideal
From $3,376
Compare at $20,070
IGISave 88.6%8.56ct | Round | F | VVS2 | Excellent
From $2,600
Compare at $22,820
IGISave 83.2%8.56ct | Round | E | VS2 | Ideal
From $3,326
Compare at $19,780
IGISave 79.9%8.56ct | Round | E | VVS2 | Ideal
From $5,106
Compare at $25,420
IGISave 75.2%8.56ct | Round | E | VVS1 | Ideal
From $6,315
Compare at $25,494
IGI8.56ct | Round | G | VS1 | Ideal
From $3,735
Compare at $3,851
IGISave 85.8%8.57ct | Round | E | VVS2 | Ideal
From $3,602
Compare at $25,400
IGISave 80.4%8.57ct | Round | F | VS1 | Ideal
From $3,965
Compare at $20,240
IGISave 82.1%8.57ct | Round | G | VVS2 | Ideal
From $3,396
Compare at $19,020
IGISave 62%8.58ct | Round | F | VS1 | Excellent
From $2,761
Compare at $7,262
IGISave 77.1%8.58ct | Round | D | VVS2 | Ideal
From $9,277
Compare at $40,580
IGISave 75.8%8.59ct | Round | E | VVS2 | Ideal
From $5,610
Compare at $23,180
IGISave 82.3%8.59ct | Round | F | VVS1 | Ideal
From $5,622
Compare at $31,830
IGISave 82.1%8.59ct | Round | E | VS1 | Ideal
From $3,982
Compare at $22,240
IGISave 85.4%8.59ct | Round | E | VVS2 | Ideal
From $3,730
Compare at $25,510
IGISave 78.4%8.6ct | Round | G | VS1 | Ideal
From $3,869
Compare at $17,910
IGISave 62.7%8.6ct | Round | E | VS1 | Excellent
From $3,080
Compare at $8,253
IGISave 73.4%8.6ct | Round | F | VS1 | Excellent
From $4,542
Compare at $17,080
IGISave 80.4%8.61ct | Round | F | VS1 | Ideal
From $3,983
Compare at $20,330
IGISave 85.1%8.61ct | Round | F | VS1 | Ideal
From $3,031
Compare at $20,280
IGISave 83.8%8.61ct | Round | E | VVS2 | Ideal
From $4,136
Compare at $25,570
IGISave 84.8%8.61ct | Round | G | VS1 | Ideal
From $3,257
Compare at $21,380
IGISave 85.8%8.62ct | Round | E | VVS2 | Excellent
From $3,633
Compare at $25,550
IGISave 55.8%8.62ct | Round | F | VS2 | Excellent
From $3,219
Compare at $7,287
IGISave 85.1%8.62ct | Round | G | VS1 | Ideal
From $2,682
Compare at $18,030
IGISave 83.9%8.62ct | Round | F | VS2 | Ideal
From $2,565
Compare at $15,900
IGISave 86.2%8.62ct | Round | E | VVS2 | Ideal
From $3,521
Compare at $25,600
IGISave 84.8%8.62ct | Round | E | VVS2 | Excellent
From $3,887
Compare at $25,600
IGISave 75.4%8.63ct | Round | F | VVS2 | Ideal
From $5,656
Compare at $23,000
IGISave 84.3%8.63ct | Round | E | VS1 | Excellent
From $3,507
Compare at $22,300
IGISave 62.5%8.64ct | Round | F | VVS2 | Excellent
From $3,297
Compare at $8,787
IGISave 75.4%8.64ct | Round | F | VS1 | Ideal
From $5,019
Compare at $20,400
IGISave 32.3%8.64ct | Round | E | VS1 | Excellent
From $2,832
Compare at $4,181
IGISave 84%8.65ct | Round | G | VS2 | Ideal
From $2,922
Compare at $18,260
IGISave 63.3%8.65ct | Round | FANCY | VVS2 | Ideal
From $10,343
Compare at $28,166
IGISave 87.1%8.65ct | Round | F | VS1 | Ideal
From $2,638
Compare at $20,430
Entry pricing in this category starts around $2,565.
What to Know When Shopping for 8.6 Carat Round Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $7,778 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 $3,633 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 37 comparable stones in this segment. Prices start around $2,565 and go up to $10,343.
Based on the latest market data, the average asking price is about $4,104 with a median around $3,633.
The observed spread is roughly $7,778 across tracked listings, which is about 75.2% 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 $3,633, 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 4 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 $7,778 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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