6.9 Carat Round Lab Grown Diamond Prices Comparison
As of April 2026, 6.9 carat round lab grown diamonds usually range from $645 to $25,953, with an average price of $5,152.In the last month, prices for these diamonds are down 0.4%.Compare 23 verified listings across 3 retailers tracked by CaratRadar.
6.9 Carat Round Lab Grown Diamond Market Overview
CaratRadar currently tracks 23 verified 6.9-carat round lab grown diamonds listed across 3 online retailers. Prices in this segment range from $645 to $25,953, with an average asking price of $5,152 and a median of $3,912.
The price spread of $25,308 (97.5% 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.
23 diamonds tracked in this segment
Price range: $645 to $25,953
Average price: $5,152
Median price: $3,912
Available across 3 retailers
Savings potential: up to 97.5%
Price Range Overview
As of Apr 14, 2026Real market range for this carat, shape, and diamond type.
23
$645
$5,152
$3,912
$25,953
Price History
Price Comparison Matrix
Live Listings
See all listingsCompare current retailer offers for this exact segment and open any listing for full details.
Save 87.1%IGI | 6.91ct | Round | G | VVS2 | Excellent
From $2,102
Compare at $16,250
Save 85.1%IGI | 6.91ct | Round | E | VS1 | Ideal
From $2,680
Compare at $18,000
Save 67.3%IGI | 6.91ct | Round | D | VS1 | Ideal
From $3,607
Compare at $11,031
Save 87.3%IGI | 6.92ct | Round | F | VS2 | Excellent
From $1,869
Compare at $14,720
IGI | 6.92ct | Round | D | VVS2 | Ideal
From $8,352
Compare at $24,500
Save 23%IGI | 6.92ct | Round | E | IF | Ideal
From $19,808
Compare at $25,721
Save 66.3%IGI | 6.92ct | Round | E | VS1 | Excellent
From $1,935
Compare at $5,740
Save 67%IGI | 6.92ct | Round | D | VS1 | Excellent
From $3,683
Compare at $11,157
Save 91.5%IGI | 6.93ct | Round | E | VVS2 | Ideal
From $1,755
Compare at $20,650
Save 55.3%IGI | 6.93ct | Round | E | VVS2 | Ideal
From $1,878
Compare at $4,197
Save 64.9%IGI | 6.95ct | Round | F | VS2 | Excellent
From $1,800
Compare at $5,133
Save 77.8%IGI | 6.95ct | Round | E | VS1 | Ideal
From $2,182
Compare at $9,820
IGI | 6.96ct | Round | F | VS1 | Ideal
From $3,864
Compare at $14,320
Save 89.2%IGI | 6.96ct | Round | E | VVS2 | Excellent
From $2,237
Compare at $20,630
Save 88.6%IGI | 6.97ct | Round | E | VS1 | Ideal
From $2,055
Compare at $18,100
IGI | 6.97ct | Round | E | VS1 | Excellent
From $2,221
Compare at $18,010
Save 87.8%IGI | 6.98ct | Round | E | VS1 | Ideal
From $2,206
Compare at $18,150
Save 88.6%IGI | 6.98ct | Round | F | VS1 | Ideal
From $1,876
Compare at $16,520
Save 55.6%IGI | 6.98ct | Round | E | VVS2 | Ideal
From $1,875
Compare at $4,226
Save 80%IGI | 6.99ct | Round | D | VS1 | Excellent
From $4,258
Compare at $21,250
Save 38.9%IGI | 6.99ct | Round | F | VS2 | Excellent
From $1,810
Compare at $2,964
IGI | 6.99ct | Round | E | VVS2 | Ideal
From $1,923
Compare at $20,800
Save 85.2%IGI | 6.99ct | Round | F | VVS2 | Excellent
From $1,465
Compare at $9,880
Entry pricing in this category starts around $645.
What to Know When Shopping for 6.9 Carat Round Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $25,308 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 $3,912 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 23 comparable stones in this segment. Prices start around $645 and go up to $25,953.
Based on the latest market data, the average asking price is about $5,152 with a median around $3,912.
The observed spread is roughly $25,308 across tracked listings, which is about 97.5% 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 $3,912, 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 3 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 $25,308 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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