0.5 Carat Radiant Lab Grown Diamond Prices Comparison
As of February 2026, 0.5 carat radiant lab grown diamonds usually range from $179 to $1,964, with an average price of $336.In the last month, prices for these diamonds are down 1.7%.Compare 676 verified listings across 5 retailers tracked by CaratRadar.
0.5 Carat Radiant Lab Grown Diamond Market Overview
CaratRadar currently tracks 676 verified 0.5-carat radiant lab grown diamonds listed across 5 online retailers. Prices in this segment range from $179 to $1,964, with an average asking price of $336 and a median of $309.
The price spread of $1,785 (90.9% 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.
676 diamonds tracked in this segment
Price range: $179 to $1,964
Average price: $336
Median price: $309
Available across 5 retailers
Savings potential: up to 90.9%
Price Range Overview
As of Feb 28, 2026Real market range for this carat, shape, and diamond type.
676
$179
$336
$309
$1,964
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 47.7%0.46ct | Radiant | D | VVS1 | Very Good
From $286
Compare at $546
IGISave 61.4%0.46ct | Radiant | H | SI1 | Ideal
From $520
Compare at $1,348
IGISave 43%0.46ct | Radiant | E | VS1 | Very Good
From $244
Compare at $428
IGISave 42.2%0.46ct | Radiant | E | VS1 | Good
From $214
Compare at $370
IGISave 41.6%0.46ct | Radiant | D | VVS1 | Ideal
From $305
Compare at $521
IGISave 41.7%0.46ct | Radiant | E | VS1 | Ideal
From $269
Compare at $461
IGISave 50%0.46ct | Radiant | E | VS1 | Ideal
From $214
Compare at $428
IGISave 52.3%0.46ct | Radiant | E | VS1 | Good
From $294
Compare at $616
IGISave 41.7%0.46ct | Radiant | D | VS1 | Ideal
From $272
Compare at $467
IGISave 41.7%0.46ct | Radiant | D | VS1 | Very Good
From $272
Compare at $467
IGISave 45.3%0.46ct | Radiant | E | VVS2 | Ideal
From $252
Compare at $461
IGISave 41.6%0.46ct | Radiant | D | VVS1 | Ideal
From $305
Compare at $521
IGISave 41.6%0.46ct | Radiant | D | VVS1 | Ideal
From $305
Compare at $521
IGISave 33.3%0.46ct | Radiant | D | VVS2 | Excellent
From $301
Compare at $452
IGISave 42.9%0.46ct | Radiant | E | VVS2 | Excellent
From $252
Compare at $441
IGISave 35.1%0.46ct | Radiant | D | VVS2 | Excellent
From $253
Compare at $390
IGISave 40.8%0.46ct | Radiant | E | VS1 | Good
From $257
Compare at $434
IGISave 31%0.46ct | Radiant | D | VVS1 | Excellent
From $276
Compare at $400
IGISave 29.5%0.46ct | Radiant | F | VVS2 | Excellent
From $289
Compare at $410
IGISave 43.1%0.46ct | Radiant | E | SI1 | Ideal
From $240
Compare at $422
IGISave 41.7%0.46ct | Radiant | D | VS1 | Ideal
From $272
Compare at $467
IGISave 48.1%0.46ct | Radiant | E | IF | Ideal
From $500
Compare at $964
IGISave 41.6%0.46ct | Radiant | D | VVS2 | Ideal
From $295
Compare at $505
IGI0.46ct | Radiant | D | VS1 | Very Good
From $272
Compare at $286
IGISave 41.6%0.46ct | Radiant | E | VVS1 | Ideal
From $295
Compare at $505
IGISave 41.7%0.46ct | Radiant | E | VS1 | Ideal
From $269
Compare at $461
IGISave 59.6%0.46ct | Radiant | D | VVS2 | Ideal
From $276
Compare at $683
IGISave 37.6%0.46ct | Radiant | E | VVS2 | Good
From $269
Compare at $431
IGISave 45.5%0.46ct | Radiant | D | VS1 | Excellent
From $242
Compare at $444
IGISave 18.6%0.46ct | Radiant | D | IF | Very Good
From $380
Compare at $467
IGISave 45.5%0.46ct | Radiant | D | VS1 | Very Good
From $242
Compare at $444
IGISave 48.9%0.46ct | Radiant | E | VS1 | Excellent
From $240
Compare at $470
IGISave 47.8%0.46ct | Radiant | E | VVS1 | Good
From $276
Compare at $529
IGISave 45.3%0.46ct | Radiant | E | VVS2 | Excellent
From $252
Compare at $461
IGISave 41.7%0.46ct | Radiant | F | VVS2 | Ideal
From $286
Compare at $490
IGISave 33.4%0.46ct | Radiant | D | VVS1 | Ideal
From $311
Compare at $467
IGISave 42.7%0.46ct | Radiant | D | VVS2 | Very Good
From $258
Compare at $450
IGISave 74.3%0.46ct | Radiant | H | VS1 | Ideal
From $450
Compare at $1,749
IGISave 88.9%0.46ct | Radiant | F | VS1 | Ideal
From $234
Compare at $2,109
IGISave 13.4%0.46ct | Radiant | E | VVS2 | Ideal
From $288
Compare at $332
IGISave 43%0.46ct | Radiant | E | VS1 | Good
From $244
Compare at $428
IGISave 52.6%0.46ct | Radiant | F | VS1 | Excellent
From $285
Compare at $601
IGISave 41.6%0.46ct | Radiant | D | VVS1 | Ideal
From $305
Compare at $521
IGISave 46.5%0.46ct | Radiant | E | IF | Excellent
From $516
Compare at $964
IGISave 41.7%0.46ct | Radiant | D | VS1 | Ideal
From $272
Compare at $467
IGISave 41.6%0.46ct | Radiant | E | VVS2 | Excellent
From $288
Compare at $492
IGISave 38.8%0.46ct | Radiant | D | VS2 | Ideal
From $278
Compare at $454
IGISave 47.7%0.46ct | Radiant | D | VVS1 | Excellent
From $286
Compare at $546
IGISave 41.6%0.46ct | Radiant | D | VVS2 | Ideal
From $295
Compare at $505
IGISave 58.1%0.46ct | Radiant | E | VS1 | Excellent
From $252
Compare at $602
Entry pricing in this category starts around $179.
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 $1,785 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 $309 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 676 comparable stones in this segment. Prices start around $179 and go up to $1,964.
Based on the latest market data, the average asking price is about $336 with a median around $309.
The observed spread is roughly $1,785 across tracked listings, which is about 90.9% 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 $309, 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 $1,785 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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