5.8 Carat Radiant Lab Grown Diamond Prices Comparison
As of February 2026, 5.8 carat radiant lab grown diamonds usually range from $1,145 to $14,830, with an average price of $2,427.In the last month, prices for these diamonds are down 1.4%.Compare 67 verified listings across 4 retailers tracked by CaratRadar.
5.8 Carat Radiant Lab Grown Diamond Market Overview
CaratRadar currently tracks 67 verified 5.8-carat radiant lab grown diamonds listed across 4 online retailers. Prices in this segment range from $1,145 to $14,830, with an average asking price of $2,427 and a median of $1,649.
The price spread of $13,685 (92.3% 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.
67 diamonds tracked in this segment
Price range: $1,145 to $14,830
Average price: $2,427
Median price: $1,649
Available across 4 retailers
Savings potential: up to 92.3%
Price Range Overview
As of Feb 28, 2026Real market range for this carat, shape, and diamond type.
67
$1,145
$2,427
$1,649
$14,830
Price History
Price Comparison Matrix
Live Listings
See all listingsCompare current retailer offers for this exact segment and open any listing for full details.
GIASave 59.9%5.75ct | Radiant | E | VVS2 | Ideal
From $14,180
Compare at $35,360
IGISave 86.2%5.75ct | Radiant | G | VS2 | Ideal
From $1,465
Compare at $10,580
IGISave 86.7%5.75ct | Radiant | D | VS2 | Ideal
From $1,643
Compare at $12,310
GCALSave 71.8%5.75ct | Radiant | E | VS1 | Excellent
From $3,147
Compare at $11,180
IGISave 89.9%5.75ct | Radiant | E | VS2 | Ideal
From $1,145
Compare at $11,310
GIASave 60.5%5.75ct | Radiant | F | VS1 | Excellent
From $4,179
Compare at $10,581
IGISave 85.2%5.75ct | Radiant | G | VS1 | Ideal
From $1,722
Compare at $11,630
IGISave 86.2%5.76ct | Radiant | G | VS2 | Ideal
From $1,468
Compare at $10,600
IGISave 88.2%5.76ct | Radiant | G | VS1 | Ideal
From $1,379
Compare at $11,660
IGISave 87.9%5.76ct | Radiant | G | VS1 | Ideal
From $1,409
Compare at $11,660
GIASave 80.6%5.76ct | Radiant | F | VS1 | Excellent
From $4,076
Compare at $21,060
IGISave 82.7%5.76ct | Radiant | G | VS1 | Ideal
From $1,472
Compare at $8,500
IGISave 66.2%5.76ct | Radiant | G | VS1 | Ideal
From $1,333
Compare at $3,943
IGISave 82.3%5.76ct | Radiant | G | VVS2 | Ideal
From $2,001
Compare at $11,330
IGISave 87.9%5.76ct | Radiant | E | VS1 | Ideal
From $1,721
Compare at $14,250
IGISave 85.5%5.76ct | Radiant | F | VS2 | Good
From $1,465
Compare at $10,110
IGISave 87%5.76ct | Radiant | E | VVS2 | Excellent
From $1,845
Compare at $14,210
IGISave 83.5%5.76ct | Radiant | F | VS1 | Excellent
From $1,205
Compare at $7,320
IGISave 89.3%5.76ct | Radiant | E | VVS2 | Excellent
From $1,701
Compare at $15,860
IGISave 84.1%5.77ct | Radiant | F | VVS2 | Excellent
From $1,270
Compare at $8,000
IGISave 75.9%5.77ct | Radiant | D | VVS2 | Excellent
From $6,446
Compare at $26,730
IGISave 87.7%5.77ct | Radiant | F | VVS2 | Excellent
From $1,583
Compare at $12,890
IGISave 82.7%5.77ct | Radiant | F | VS2 | Ideal
From $1,148
Compare at $6,650
IGISave 87.9%5.79ct | Radiant | G | VS1 | Ideal
From $1,415
Compare at $11,710
IGISave 69%5.79ct | Radiant | F | VS1 | Ideal
From $1,416
Compare at $4,570
IGISave 86.7%5.79ct | Radiant | F | VS1 | Ideal
From $1,210
Compare at $9,100
IGISave 87%5.79ct | Radiant | F | VVS2 | Excellent
From $1,883
Compare at $14,450
IGISave 89.9%5.79ct | Radiant | E | VS1 | Very Good
From $1,588
Compare at $15,750
IGISave 89.5%5.79ct | Radiant | F | VVS2 | Excellent
From $1,516
Compare at $14,450
IGISave 85.2%5.79ct | Radiant | G | VS1 | Ideal
From $1,734
Compare at $11,710
IGISave 86.1%5.79ct | Radiant | F | VS2 | Excellent
From $1,649
Compare at $11,820
IGISave 82.4%5.79ct | Radiant | F | VS1 | Excellent
From $1,700
Compare at $9,670
IGI5.79ct | Radiant | F | VVS1 | Very Good
From $14,710
Compare at $15,070
IGISave 89.3%5.79ct | Radiant | E | VVS2 | Excellent
From $1,709
Compare at $15,950
IGISave 86.4%5.79ct | Radiant | F | VS1 | Excellent
From $1,182
Compare at $8,670
IGISave 80.4%5.8ct | Radiant | F | VS1 | Ideal
From $1,446
Compare at $7,370
IGISave 84.6%5.8ct | Radiant | F | VS2 | Ideal
From $1,843
Compare at $11,980
IGISave 89.7%5.8ct | Radiant | E | VS1 | Excellent
From $1,621
Compare at $15,780
IGISave 46.8%5.8ct | Radiant | H | VS1 | Ideal
From $1,879
Compare at $3,529
IGISave 75.1%5.8ct | Radiant | E | VS1 | Ideal
From $1,242
Compare at $4,985
IGISave 87.1%5.8ct | Radiant | E | VVS2 | Excellent
From $2,066
Compare at $15,970
IGISave 67%5.8ct | Radiant | F | VS2 | Ideal
From $1,452
Compare at $4,405
IGISave 80.5%5.8ct | Radiant | F | VS2 | Ideal
From $1,684
Compare at $8,620
IGISave 89.9%5.8ct | Radiant | E | VS1 | Excellent
From $1,591
Compare at $15,780
IGISave 87%5.81ct | Radiant | G | SI1 | Ideal
From $1,185
Compare at $9,100
IGISave 80.7%5.81ct | Radiant | G | VS1 | Very Good
From $1,959
Compare at $10,140
IGISave 89.8%5.81ct | Radiant | F | VVS2 | Excellent
From $1,491
Compare at $14,550
IGISave 83.6%5.81ct | Radiant | D | VS1 | Very Good
From $2,761
Compare at $16,840
IGISave 74.2%5.81ct | Radiant | D | VVS2 | Very Good
From $4,959
Compare at $19,230
GIASave 81.7%5.82ct | Radiant | G | VS2 | Excellent
From $2,738
Compare at $14,960
Entry pricing in this category starts around $1,145.
What to Know When Shopping for 5.8 Carat Radiant Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $13,685 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 $1,649 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.
- Radiant cuts combine the elegance of emerald shapes with the brilliance of round cuts, offering good value per carat.
Frequently Asked Questions
We currently track 67 comparable stones in this segment. Prices start around $1,145 and go up to $14,830.
Based on the latest market data, the average asking price is about $2,427 with a median around $1,649.
The observed spread is roughly $13,685 across tracked listings, which is about 92.3% 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 $1,649, 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 $13,685 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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