6.3 Carat Round Lab Grown Diamond Prices Comparison
As of April 2026, 6.3 carat round lab grown diamonds usually range from $560 to $67,877, with an average price of $6,524.In the last month, prices for these diamonds are down 1.8%.Compare 80 verified listings across 7 retailers tracked by CaratRadar.
6.3 Carat Round Lab Grown Diamond Market Overview
CaratRadar currently tracks 80 verified 6.3-carat round lab grown diamonds listed across 7 online retailers. Prices in this segment range from $560 to $67,877, with an average asking price of $6,524 and a median of $4,195.
The price spread of $67,317 (99.2% 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.
80 diamonds tracked in this segment
Price range: $560 to $67,877
Average price: $6,524
Median price: $4,195
Available across 7 retailers
Savings potential: up to 99.2%
Price Range Overview
As of Apr 14, 2026Real market range for this carat, shape, and diamond type.
80
$560
$6,524
$4,195
$67,877
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 79.5%GIA | 6.3ct | Round | D | IF | Ideal
From $33,190
Compare at $162,200
Save 80.6%GIA | 6.3ct | Round | D | VVS1 | Excellent
From $14,940
Compare at $76,894
Save 72.3%GIA | 6.3ct | Round | G | SI1 | Excellent
From $3,036
Compare at $10,960
Save 10.5%GIA | 6.3ct | Round | D | FL | Excellent
From $50,891
Compare at $56,850
Save 73.2%IGI | 6.3ct | Round | G | VS1 | Ideal
From $2,760
Compare at $10,290
Save 68.8%IGI | 6.3ct | Round | E | VVS2 | Ideal
From $4,014
Compare at $12,880
Save 86.7%IGI | 6.3ct | Round | F | VS2 | Ideal
From $1,780
Compare at $13,400
Save 82.1%IGI | 6.3ct | Round | G | IF | Ideal
From $12,895
Compare at $72,118
Save 77.9%IGI | 6.3ct | Round | G | VS1 | Excellent
From $1,771
Compare at $8,030
Save 64%IGI | 6.3ct | Round | F | VS1 | Excellent
From $1,724
Compare at $4,785
Save 78.9%IGI | 6.3ct | Round | E | VS1 | Excellent
From $2,071
Compare at $9,820
Save 90.3%IGI | 6.3ct | Round | E | VVS2 | Ideal
From $1,820
Compare at $18,740
Save 37.9%IGI | 6.3ct | Round | F | VVS2 | Excellent
From $1,866
Compare at $3,003
Save 37.9%IGI | 6.3ct | Round | F | VVS2 | Excellent
From $1,866
Compare at $3,003
Save 80.1%IGI | 6.3ct | Round | E | VS1 | Ideal
From $1,823
Compare at $9,160
Save 72%GIA | 6.31ct | Round | E | IF | Excellent
From $27,816
Compare at $99,270
Save 83.7%GIA | 6.31ct | Round | D | VS1 | Excellent
From $6,800
Compare at $41,690
Save 72%GIA | 6.31ct | Round | E | IF | Excellent
From $27,816
Compare at $99,270
Save 78.6%IGI | 6.31ct | Round | G | VS1 | Ideal
From $1,826
Compare at $8,530
Save 43.4%IGI | 6.31ct | Round | H | VS2 | Ideal
From $2,123
Compare at $3,750
Save 76%IGI | 6.31ct | Round | G | VS1 | Ideal
From $1,775
Compare at $7,380
Save 83.6%IGI | 6.31ct | Round | G | VS2 | Ideal
From $1,837
Compare at $11,200
Save 70.1%IGI | 6.31ct | Round | E | IF | Ideal
From $17,730
Compare at $59,380
Save 72.1%IGI | 6.31ct | Round | E | VVS2 | Excellent
From $3,103
Compare at $11,120
Save 83.3%IGI | 6.31ct | Round | E | VS1 | Ideal
From $1,771
Compare at $10,600
Save 74.6%IGI | 6.32ct | Round | G | VS1 | Ideal
From $2,768
Compare at $10,900
Save 80.2%IGI | 6.32ct | Round | H | VS1 | Ideal
From $2,168
Compare at $10,960
Save 82.9%IGI | 6.32ct | Round | E | VS1 | Ideal
From $1,931
Compare at $11,320
Save 76.8%IGI | 6.32ct | Round | D | VS1 | Ideal
From $3,052
Compare at $13,150
Save 76.8%IGI | 6.32ct | Round | D | VS1 | Ideal
From $3,052
Compare at $13,150
Save 37.9%IGI | 6.32ct | Round | F | VVS2 | Ideal
From $1,872
Compare at $3,012
Save 25%IGI | 6.32ct | Round | E | VS2 | Ideal
From $3,837
Compare at $5,115
Save 79.3%GIA | 6.33ct | Round | E | VVS2 | Excellent
From $8,770
Compare at $42,380
Save 70.7%IGI | 6.33ct | Round | E | VVS2 | Excellent
From $4,033
Compare at $13,750
Save 77.7%IGI | 6.33ct | Round | G | VS1 | Ideal
From $1,780
Compare at $7,970
Save 70.6%IGI | 6.33ct | Round | D | IF | Ideal
From $19,515
Compare at $66,430
Save 80%IGI | 6.33ct | Round | E | VVS2 | Ideal
From $2,440
Compare at $12,200
Save 85.4%IGI | 6.33ct | Round | F | VS2 | Excellent
From $1,960
Compare at $13,390
Save 71.2%IGI | 6.33ct | Round | F | VVS2 | Excellent
From $1,788
Compare at $6,200
Save 68%IGI | 6.33ct | Round | D | VVS2 | Excellent
From $4,463
Compare at $13,926
Save 98.7%IGI | 6.34ct | Round | G | SI1 | Excellent
From $2,720
Compare at $202,880
Save 79.9%IGI | 6.34ct | Round | G | VS1 | Ideal
From $1,834
Compare at $9,140
Save 84.1%IGI | 6.34ct | Round | E | VVS2 | Ideal
From $1,813
Compare at $11,380
Save 55.2%IGI | 6.34ct | Round | E | VVS2 | Ideal
From $1,893
Compare at $4,230
Save 46.6%IGI | 6.34ct | Round | E | VS1 | Very Good
From $1,928
Compare at $3,611
Save 88.4%IGI | 6.34ct | Round | E | VVS2 | Excellent
From $2,194
Compare at $18,910
Save 59.9%GIA | 6.35ct | Round | D | VVS1 | Excellent
From $13,182
Compare at $32,906
Save 46.8%IGI | 6.35ct | Round | E | VS1 | Ideal
From $9,752
Compare at $18,325
Save 81.1%IGI | 6.35ct | Round | G | VS1 | Ideal
From $1,837
Compare at $9,720
Save 38.4%IGI | 6.35ct | Round | E | VVS2 | Excellent
From $2,864
Compare at $4,650
Entry pricing in this category starts around $560.
What to Know When Shopping for 6.3 Carat Round Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $67,317 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 $4,195 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 80 comparable stones in this segment. Prices start around $560 and go up to $67,877.
Based on the latest market data, the average asking price is about $6,524 with a median around $4,195.
The observed spread is roughly $67,317 across tracked listings, which is about 99.2% 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 $4,195, 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 7 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 $67,317 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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