0.5 Carat Radiant Lab Grown Diamond Prices Comparison
As of April 2026, 0.5 carat radiant lab grown diamonds usually range from $126 to $1,500, with an average price of $495.In the last month, prices for these diamonds are down 1.9%.Compare 713 verified listings across 5 retailers tracked by CaratRadar.
0.5 Carat Radiant Lab Grown Diamond Market Overview
CaratRadar currently tracks 713 verified 0.5-carat radiant lab grown diamonds listed across 5 online retailers. Prices in this segment range from $126 to $1,500, with an average asking price of $495 and a median of $445.
The price spread of $1,374 (91.6% 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.
713 diamonds tracked in this segment
Price range: $126 to $1,500
Average price: $495
Median price: $445
Available across 5 retailers
Savings potential: up to 91.6%
Price Range Overview
As of Apr 14, 2026Real market range for this carat, shape, and diamond type.
713
$126
$495
$445
$1,500
Price History
Price Comparison Matrix
Live Listings
See all listingsCompare current retailer offers for this exact segment and open any listing for full details.
IGI | 0.5ct | Radiant | H | SI1 | Very Good
From $1,064
Compare at $1,065
Save 27.9%IGI | 0.5ct | Radiant | G | VVS2 | Ideal
From $317
Compare at $440
Save 26.5%IGI | 0.5ct | Radiant | G | VS2 | Very Good
From $317
Compare at $432
Save 26.5%IGI | 0.5ct | Radiant | F | VS2 | Ideal
From $317
Compare at $432
Save 26.5%IGI | 0.5ct | Radiant | F | VS2 | Ideal
From $317
Compare at $432
Save 26.5%IGI | 0.5ct | Radiant | G | VS2 | Ideal
From $317
Compare at $432
Save 27.9%IGI | 0.5ct | Radiant | F | VVS2 | Ideal
From $317
Compare at $440
Save 27.9%IGI | 0.5ct | Radiant | F | VS1 | Ideal
From $317
Compare at $440
Save 27.9%IGI | 0.5ct | Radiant | E | VS2 | Ideal
From $317
Compare at $440
Save 26.5%IGI | 0.5ct | Radiant | F | VS2 | Very Good
From $317
Compare at $432
Save 51.3%IGI | 0.5ct | Radiant | F | VS2 | Ideal
From $317
Compare at $652
Save 26.6%IGI | 0.5ct | Radiant | G | SI1 | Ideal
From $317
Compare at $432
Save 27.9%IGI | 0.5ct | Radiant | G | VS1 | Ideal
From $317
Compare at $440
Save 51.3%IGI | 0.5ct | Radiant | G | VS2 | Ideal
From $317
Compare at $652
Save 26.5%IGI | 0.5ct | Radiant | F | VS2 | Ideal
From $317
Compare at $432
Save 26.5%IGI | 0.5ct | Radiant | G | VS2 | Ideal
From $317
Compare at $432
Save 26.6%IGI | 0.5ct | Radiant | G | SI1 | Ideal
From $317
Compare at $432
Save 26.6%IGI | 0.5ct | Radiant | F | SI1 | Ideal
From $317
Compare at $432
IGI | 0.5ct | Radiant | H | SI1 | Ideal
From $420
Compare at $432
Save 27.9%IGI | 0.5ct | Radiant | G | VS1 | Ideal
From $317
Compare at $440
Save 81.3%IGI | 0.5ct | Radiant | F | VS1 | Very Good
From $217
Compare at $1,160
Save 72.6%IGI | 0.5ct | Radiant | E | VVS1 | Ideal
From $310
Compare at $1,130
Save 72.8%IGI | 0.5ct | Radiant | D | VVS1 | Ideal
From $321
Compare at $1,180
Save 45.2%IGI | 0.5ct | Radiant | D | VVS1 | Ideal
From $296
Compare at $540
Save 33%IGI | 0.5ct | Radiant | FANCY | VS1 | Excellent
From $452
Compare at $675
Save 14%IGI | 0.5ct | Radiant | E | VVS2 | Very Good
From $249
Compare at $290
IGI | 0.5ct | Radiant | FANCY | VVS2 | Very Good
From $322
Compare at $387
Save 48.6%IGI | 0.5ct | Radiant | D | VVS1 | Very Good
From $249
Compare at $485
Save 38.8%IGI | 0.5ct | Radiant | G | VVS2 | Excellent
From $269
Compare at $440
Save 45%IGI | 0.5ct | Radiant | G | VS1 | Excellent
From $231
Compare at $420
Save 40.6%IGI | 0.5ct | Radiant | D | IF | Excellent
From $378
Compare at $636
Save 40.1%IGI | 0.5ct | Radiant | E | VVS1 | Ideal
From $349
Compare at $583
Save 40.6%IGI | 0.5ct | Radiant | D | IF | Very Good
From $378
Compare at $636
IGI | 0.5ct | Radiant | D | VS1 | Excellent
From $443
Compare at $454
Save 21.4%IGI | 0.5ct | Radiant | D | VS1 | Ideal
From $454
Compare at $577
Save 66.8%IGI | 0.5ct | Radiant | D | VVS1 | Ideal
From $395
Compare at $1,191
Save 21.2%IGI | 0.5ct | Radiant | D | VS2 | Excellent
From $372
Compare at $472
Save 57.1%IGI | 0.5ct | Radiant | E | IF | Very Good
From $493
Compare at $1,149
Save 43%IGI | 0.5ct | Radiant | D | VVS1 | Ideal
From $395
Compare at $693
Save 45%IGI | 0.5ct | Radiant | D | VVS2 | Ideal
From $372
Compare at $676
Save 50.5%IGI | 0.5ct | Radiant | D | VVS1 | Very Good
From $308
Compare at $622
Save 31.7%IGI | 0.5ct | Radiant | D | IF | Ideal
From $402
Compare at $588
Save 33.6%IGI | 0.5ct | Radiant | D | VS1 | Ideal
From $368
Compare at $554
Save 51%IGI | 0.5ct | Radiant | E | VVS2 | Excellent
From $282
Compare at $575
Save 45%IGI | 0.5ct | Radiant | D | VVS2 | Ideal
From $372
Compare at $676
Save 45.5%IGI | 0.5ct | Radiant | D | VS1 | Excellent
From $339
Compare at $622
Save 45.5%IGI | 0.5ct | Radiant | D | VS1 | Excellent
From $339
Compare at $622
Save 45.5%IGI | 0.5ct | Radiant | D | VS1 | Excellent
From $339
Compare at $622
Save 38.9%IGI | 0.5ct | Radiant | F | VVS2 | Excellent
From $323
Compare at $528
Save 50.5%IGI | 0.5ct | Radiant | D | VVS1 | Excellent
From $308
Compare at $622
Entry pricing in this category starts around $126.
What to Know When Shopping for 0.5 Carat Radiant Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $1,374 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 $445 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 713 comparable stones in this segment. Prices start around $126 and go up to $1,500.
Based on the latest market data, the average asking price is about $495 with a median around $445.
The observed spread is roughly $1,374 across tracked listings, which is about 91.6% 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 $445, 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 5 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 $1,374 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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