6.5 Carat Round Lab Grown Diamond Prices Comparison
As of February 2026, 6.5 carat round lab grown diamonds usually range from $1,410 to $65,550, with an average price of $3,485.In the last month, prices for these diamonds are down 2.6%.Compare 176 verified listings across 8 retailers tracked by CaratRadar.
6.5 Carat Round Lab Grown Diamond Market Overview
CaratRadar currently tracks 176 verified 6.5-carat round lab grown diamonds listed across 8 online retailers. Prices in this segment range from $1,410 to $65,550, with an average asking price of $3,485 and a median of $1,890.
The price spread of $64,140 (97.8% 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.
176 diamonds tracked in this segment
Price range: $1,410 to $65,550
Average price: $3,485
Median price: $1,890
Available across 8 retailers
Savings potential: up to 97.8%
Price Range Overview
As of Feb 28, 2026Real market range for this carat, shape, and diamond type.
176
$1,410
$3,485
$1,890
$65,550
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 62.7%6.46ct | Round | F | VS1 | Excellent
From $1,828
Compare at $4,905
IGISave 89%6.46ct | Round | E | VVS2 | Ideal
From $2,124
Compare at $19,250
IGISave 85.5%6.46ct | Round | G | VS1 | Ideal
From $1,625
Compare at $11,170
IGISave 86.9%6.46ct | Round | F | VVS2 | Ideal
From $2,265
Compare at $17,300
IGISave 89.3%6.46ct | Round | F | VS2 | Excellent
From $1,466
Compare at $13,670
GIASave 69.1%6.46ct | Round | G | VS2 | Excellent
From $3,577
Compare at $11,590
IGISave 84.8%6.46ct | Round | F | VVS2 | Ideal
From $1,410
Compare at $9,290
IGISave 69.2%6.47ct | Round | F | VS1 | Excellent
From $1,516
Compare at $4,915
IGISave 80.5%6.47ct | Round | F | VVS2 | Excellent
From $1,709
Compare at $8,770
IGISave 82.4%6.47ct | Round | D | VS1 | Ideal
From $3,464
Compare at $19,670
IGISave 85.1%6.47ct | Round | F | VVS2 | Excellent
From $1,612
Compare at $10,810
IGISave 83.2%6.47ct | Round | G | VS1 | Ideal
From $2,075
Compare at $12,330
IGISave 81.6%6.47ct | Round | E | VVS1 | Ideal
From $10,492
Compare at $56,880
IGISave 72%6.47ct | Round | E | IF | Ideal
From $29,687
Compare at $105,940
IGISave 82.4%6.48ct | Round | D | VS1 | Ideal
From $3,469
Compare at $19,700
IGISave 89%6.48ct | Round | E | VS1 | Excellent
From $1,842
Compare at $16,740
IGISave 89%6.48ct | Round | E | VVS2 | Ideal
From $2,130
Compare at $19,310
IGISave 84.5%6.48ct | Round | E | VVS2 | Ideal
From $2,971
Compare at $19,210
GIASave 82.8%6.49ct | Round | D | VVS2 | Excellent
From $8,635
Compare at $50,320
IGISave 85%6.49ct | Round | E | VS2 | Excellent
From $1,556
Compare at $10,390
IGISave 89%6.49ct | Round | E | VS1 | Excellent
From $1,844
Compare at $16,770
IGISave 86.1%6.49ct | Round | G | VS1 | Ideal
From $1,631
Compare at $11,750
IGISave 11.3%6.5ct | Round | E | VS2 | Ideal
From $9,429
Compare at $10,625
IGISave 88.2%6.5ct | Round | G | VS1 | Ideal
From $1,887
Compare at $16,010
IGISave 86.9%6.5ct | Round | G | VS2 | Ideal
From $1,791
Compare at $13,640
IGISave 43%6.5ct | Round | H | VS1 | Ideal
From $1,529
Compare at $2,682
IGISave 13.1%6.5ct | Round | F | VS2 | Excellent
From $1,542
Compare at $1,773
IGISave 75.8%6.5ct | Round | D | VVS2 | Ideal
From $5,561
Compare at $23,010
IGISave 87.3%6.5ct | Round | G | VVS1 | Excellent
From $2,184
Compare at $17,170
IGISave 14.2%6.5ct | Round | E | VS1 | Very Good
From $1,649
Compare at $1,921
IGISave 89%6.5ct | Round | E | VS1 | Excellent
From $1,846
Compare at $16,790
IGISave 88.8%6.5ct | Round | G | VS2 | Ideal
From $1,529
Compare at $13,640
IGISave 90%6.5ct | Round | G | VS1 | Ideal
From $1,624
Compare at $16,280
IGISave 41.9%6.5ct | Round | H | VS1 | Ideal
From $1,559
Compare at $2,682
IGISave 32%6.5ct | Round | F | VS1 | Excellent
From $1,819
Compare at $2,676
IGISave 14.8%6.5ct | Round | F | SI1 | Excellent
From $1,539
Compare at $1,806
6.5ct | Round | E | VS2 | Ideal
From $3,702
Compare at $15,100
IGISave 81.9%6.5ct | Round | E | VS2 | Ideal
From $2,712
Compare at $15,020
IGISave 85%6.5ct | Round | E | VS2 | Excellent
From $1,512
Compare at $10,060
IGISave 89.6%6.5ct | Round | F | VS1 | Ideal
From $1,594
Compare at $15,360
IGISave 94.4%6.5ct | Round | D | VS2 | Ideal
From $3,063
Compare at $54,970
IGISave 86.8%6.5ct | Round | F | VS1 | Ideal
From $2,037
Compare at $15,390
IGISave 52.8%6.5ct | Round | D | VS1 | Excellent
From $3,004
Compare at $6,370
IGISave 91%6.5ct | Round | E | VS1 | Ideal
From $1,769
Compare at $19,740
IGISave 88.2%6.5ct | Round | G | VS1 | Ideal
From $1,887
Compare at $16,010
IGISave 33%6.5ct | Round | G | VS1 | Ideal
From $1,887
Compare at $2,817
IGISave 85%6.5ct | Round | G | VS1 | Ideal
From $1,508
Compare at $10,030
IGISave 82.4%6.5ct | Round | E | SI1 | Ideal
From $1,887
Compare at $10,740
IGISave 50.8%6.5ct | Round | E | VVS2 | Excellent
From $9,472
Compare at $19,270
IGISave 88.8%6.5ct | Round | G | VS2 | Ideal
From $1,529
Compare at $13,640
Entry pricing in this category starts around $1,410.
What to Know When Shopping for 6.5 Carat Round Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $64,140 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 $1,890 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 176 comparable stones in this segment. Prices start around $1,410 and go up to $65,550.
Based on the latest market data, the average asking price is about $3,485 with a median around $1,890.
The observed spread is roughly $64,140 across tracked listings, which is about 97.8% 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 $1,890, 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 8 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 $64,140 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.
Related Price Categories
Explore adjacent carat ranges and shapes to compare market shifts.
6.4 Carat Round Lab Grown Diamond Prices
6.6 Carat Round Lab Grown Diamond Prices
6.3 Carat Round Lab Grown Diamond Prices
6.7 Carat Round Lab Grown Diamond Prices
6.2 Carat Round Lab Grown Diamond Prices
6.8 Carat Round Lab Grown Diamond Prices
6.1 Carat Round Lab Grown Diamond Prices
6.5 Carat Oval Lab Grown Diamond Prices
6.5 Carat Emerald Lab Grown Diamond Prices
6.5 Carat Cushion Lab Grown Diamond Prices
6.5 Carat Radiant Lab Grown Diamond Prices
6.5 Carat Pear Lab Grown Diamond Prices
Tracking Lab Grown inventory for 6.5 carat Round diamonds.