0.5 Carat Round Natural Diamond Prices Comparison
As of July 2026, 0.5 carat round natural diamonds usually range from $155 to $2,661, with an average price of $1,028.In the last month, prices for these diamonds are down 0.8%.Compare 31,736 verified listings across 9 retailers tracked by CaratRadar.
0.5 Carat Round Natural Diamond Market Overview
CaratRadar currently tracks 31,736 verified 0.5-carat round natural diamonds listed across 9 online retailers. Prices in this segment range from $155 to $2,661, with an average asking price of $1,028 and a median of $963.
The price spread of $2,506 (94.2% 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.
31,736 diamonds tracked in this segment
Price range: $155 to $2,661
Average price: $1,028
Median price: $963
Available across 9 retailers
Savings potential: up to 94.2%
Price Range Overview
As of Jul 13, 2026Real market range for this carat, shape, and diamond type.
31,736
$155
$1,028
$963
$2,661
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 | Round | K | I1 | Ideal
From $266
Compare at $277
IGI | 0.5ct | Round | K | I1 | Ideal
From $266
Compare at $277
IGI | 0.5ct | Round | K | I1 | Very Good
From $266
Compare at $277
Save 32.8%GIA | 0.5ct | Round | K | SI2 | Good
From $270
Compare at $402
IGI | 0.52ct | Round | K | I1 | Very Good
From $274
Compare at $289
IGI | 0.5ct | Round | L | SI2 | Very Good
From $280
Compare at $297
IGI | 0.52ct | Round | L | SI2 | Excellent
From $281
Compare at $298
IGI | 0.54ct | Round | L | I1 | Ideal
From $283
Compare at $300
IGI | 0.5ct | Round | L | I1 | Ideal
From $289
Compare at $307
IGI | 0.5ct | Round | K | I1 | Ideal
From $289
Compare at $307
IGI | 0.5ct | Round | K | I1 | Good
From $292
Compare at $311
IGI | 0.5ct | Round | K | I1 | Very Good
From $298
Compare at $319
IGI | 0.5ct | Round | K | I1 | Excellent
From $298
Compare at $319
IGI | 0.54ct | Round | L | SI2 | Excellent
From $298
Compare at $320
IGI | 0.54ct | Round | L | SI2 | Ideal
From $298
Compare at $320
IGI | 0.52ct | Round | L | SI2 | Ideal
From $298
Compare at $320
IGI | 0.5ct | Round | L | SI2 | Very Good
From $298
Compare at $320
IGI | 0.51ct | Round | K | SI2 | Excellent
From $299
Compare at $321
IGI | 0.54ct | Round | K | I1 | Ideal
From $299
Compare at $320
IGI | 0.5ct | Round | L | SI2 | Ideal
From $307
Compare at $331
IGI | 0.53ct | Round | J | I1 | Ideal
From $310
Compare at $337
IGI | 0.5ct | Round | K | I1 | Very Good
From $313
Compare at $339
IGI | 0.5ct | Round | K | VS2 | Very Good
From $317
Compare at $342
IGI | 0.51ct | Round | K | SI2 | Ideal
From $317
Compare at $345
IGI | 0.51ct | Round | K | SI2 | Ideal
From $317
Compare at $345
IGI | 0.5ct | Round | K | I1 | Ideal
From $320
Compare at $349
IGI | 0.51ct | Round | K | I1 | Excellent
From $320
Compare at $349
IGI | 0.5ct | Round | K | I1 | Excellent
From $320
Compare at $349
IGI | 0.5ct | Round | K | I1 | Excellent
From $320
Compare at $349
IGI | 0.5ct | Round | K | I1 | Ideal
From $320
Compare at $349
IGI | 0.5ct | Round | K | I1 | Ideal
From $320
Compare at $349
IGI | 0.5ct | Round | K | I1 | Ideal
From $320
Compare at $349
IGI | 0.5ct | Round | L | I1 | Ideal
From $320
Compare at $349
IGI | 0.53ct | Round | J | I1 | Very Good
From $322
Compare at $351
IGI | 0.5ct | Round | K | SI1 | Excellent
From $322
Compare at $351
IGI | 0.52ct | Round | K | SI2 | Very Good
From $324
Compare at $352
IGI | 0.5ct | Round | F | I1 | Very Good
From $324
Compare at $344
IGI | 0.5ct | Round | L | SI2 | Ideal
From $325
Compare at $354
IGI | 0.5ct | Round | L | SI2 | Ideal
From $325
Compare at $354
Save 27.7%GIA | 0.5ct | Round | L | VVS2 | Good
From $327
Compare at $452
IGI | 0.51ct | Round | I | I1 | Very Good
From $327
Compare at $357
Save 16.3%GIA | 0.5ct | Round | K | SI2 | Very Good
From $328
Compare at $392
IGI | 0.5ct | Round | L | I1 | Ideal
From $328
Compare at $359
IGI | 0.5ct | Round | L | I1 | Excellent
From $328
Compare at $359
Save 27.9%GIA | 0.5ct | Round | L | VS2 | Ideal
From $329
Compare at $456
IGI | 0.51ct | Round | L | SI2 | Ideal
From $330
Compare at $361
IGI | 0.5ct | Round | J | I1 | Ideal
From $330
Compare at $359
IGI | 0.51ct | Round | L | SI1 | Ideal
From $330
Compare at $351
IGI | 0.53ct | Round | G | I1 | Excellent
From $330
Compare at $352
IGI | 0.5ct | Round | L | SI2 | Ideal
From $330
Compare at $359
Entry pricing in this category starts around $155.
What to Know When Shopping for 0.5 Carat Round Natural Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $2,506 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 $963 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.
- Compare natural vs. lab-grown options for the same carat and shape. Lab-grown diamonds are chemically identical but often 30-50% less expensive.
- 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 31,736 comparable stones in this segment. Prices start around $155 and go up to $2,661.
Based on the latest market data, the average asking price is about $1,028 with a median around $963.
The observed spread is roughly $2,506 across tracked listings, which is about 94.2% from highest to lowest offer in this bucket.
We refresh pricing data daily so these pages stay current with market changes.
Based on completed market data, the fair market benchmark is $1,028. The median price is $963, so offers between the median and fair benchmark can be reasonable, while reputable listings below the median may be especially competitive.
We currently track this stone category across 9 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 $2,506 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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Tracking Natural inventory for 0.5 carat Round diamonds.