0.9 Carat Round Natural Diamond Prices Comparison
As of May 2026, 0.9 carat round natural diamonds usually range from $425 to $8,997, with an average price of $2,883.In the last month, prices for these diamonds are up 0.4%.Compare 3,036 verified listings across 8 retailers tracked by CaratRadar.
0.9 Carat Round Natural Diamond Market Overview
CaratRadar currently tracks 3,036 verified 0.9-carat round natural diamonds listed across 8 online retailers. Prices in this segment range from $425 to $8,997, with an average asking price of $2,883 and a median of $2,598.
The price spread of $8,572 (95.3% 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.
3,036 diamonds tracked in this segment
Price range: $425 to $8,997
Average price: $2,883
Median price: $2,598
Available across 8 retailers
Savings potential: up to 95.3%
Price Range Overview
As of May 29, 2026Real market range for this carat, shape, and diamond type.
3,036
$425
$2,883
$2,598
$8,997
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 36.5%GIA | 0.91ct | Round | J | SI2 | Ideal
From $744
Compare at $1,171
Save 17.3%IGI | 0.91ct | Round | K | SI1 | Excellent
From $760
Compare at $919
Save 18.5%IGI | 0.92ct | Round | K | SI1 | Excellent
From $785
Compare at $963
Save 15.4%GIA | 0.96ct | Round | L | SI2 | Excellent
From $849
Compare at $1,004
GIA | 0.91ct | Round | K | SI2 | Good
From $869
Compare at $919
IGI | 0.94ct | Round | K | SI1 | Excellent
From $870
Compare at $886
Save 40.7%GIA | 0.95ct | Round | K | SI2 | Ideal
From $885
Compare at $1,492
Save 13.5%GIA | 0.93ct | Round | L | SI2 | Excellent
From $906
Compare at $1,048
Save 33.8%GIA | 0.91ct | Round | L | VS2 | Very Good
From $920
Compare at $1,389
Save 19.7%GIA | 0.97ct | Round | L | SI2 | Excellent
From $924
Compare at $1,151
Save 20.9%GIA | 0.96ct | Round | L | SI2 | Excellent
From $932
Compare at $1,179
Save 17.2%GIA | 0.97ct | Round | L | SI2 | Ideal
From $942
Compare at $1,137
IGI | 0.96ct | Round | H | SI2 | Ideal
From $949
Compare at $1,050
Save 14.2%GIA | 0.92ct | Round | L | SI1 | Good
From $973
Compare at $1,134
Save 22.2%GIA | 0.91ct | Round | K | SI1 | Good
From $973
Compare at $1,250
Save 18.1%GIA | 0.91ct | Round | K | SI1 | Very Good
From $975
Compare at $1,190
Save 18.5%GIA | 0.91ct | Round | J | SI1 | Very Good
From $975
Compare at $1,197
Save 17.6%IGI | 0.91ct | Round | J | VS2 | Very Good
From $975
Compare at $1,183
Save 17.6%IGI | 0.91ct | Round | J | VS2 | Very Good
From $975
Compare at $1,183
Save 33.8%GIA | 0.91ct | Round | L | VS1 | Very Good
From $982
Compare at $1,483
Save 29.5%GIA | 0.95ct | Round | K | SI2 | Excellent
From $989
Compare at $1,403
Save 14%GIA | 0.93ct | Round | I | SI2 | Good
From $992
Compare at $1,153
Save 10.2%GIA | 0.91ct | Round | K | SI1 | Ideal
From $997
Compare at $1,110
Save 29.6%GIA | 0.91ct | Round | K | SI1 | Excellent
From $997
Compare at $1,416
Save 38.5%GIA | 0.91ct | Round | K | SI1 | Very Good
From $998
Compare at $1,624
Save 38.5%GIA | 0.91ct | Round | L | VS1 | Very Good
From $998
Compare at $1,624
Save 20.2%IGI | 0.91ct | Round | K | VS2 | Excellent
From $1,005
Compare at $1,260
Save 32.4%GIA | 0.96ct | Round | K | VS1 | Ideal
From $1,006
Compare at $1,489
Save 27.6%GIA | 0.92ct | Round | K | SI1 | Ideal
From $1,008
Compare at $1,392
Save 25.4%GIA | 0.91ct | Round | I | SI2 | Very Good
From $1,008
Compare at $1,351
Save 21%IGI | 0.91ct | Round | K | VS2 | Excellent
From $1,010
Compare at $1,279
Save 60.2%GIA | 0.98ct | Round | I | SI2 | Good
From $1,023
Compare at $2,570
Save 21.3%GIA | 0.95ct | Round | L | SI1 | Excellent
From $1,040
Compare at $1,321
Save 22.4%IGI | 0.92ct | Round | K | VS1 | Excellent
From $1,040
Compare at $1,341
Save 27.5%GIA | 0.95ct | Round | K | SI1 | Excellent
From $1,041
Compare at $1,437
Save 29.1%GIA | 0.95ct | Round | K | SI1 | Ideal
From $1,041
Compare at $1,469
HRD | 0.96ct | Round | F | SI2 | Very Good
From $1,041
Compare at $1,150
Save 21.4%IGI | 0.91ct | Round | K | VS2 | Very Good
From $1,050
Compare at $1,336
Save 32.5%GIA | 0.96ct | Round | L | VS1 | Excellent
From $1,051
Compare at $1,558
Save 22%GIA | 0.96ct | Round | L | SI2 | Excellent
From $1,052
Compare at $1,349
Save 32.7%GIA | 0.92ct | Round | L | SI1 | Excellent
From $1,059
Compare at $1,574
Save 38.5%GIA | 0.91ct | Round | J | SI2 | Ideal
From $1,060
Compare at $1,725
Save 40.9%GIA | 0.94ct | Round | K | SI1 | Excellent
From $1,061
Compare at $1,795
Save 29.4%GIA | 0.96ct | Round | K | SI2 | Ideal
From $1,062
Compare at $1,505
Save 20.1%GIA | 0.96ct | Round | K | SI2 | Excellent
From $1,064
Compare at $1,331
Save 32.5%GIA | 0.96ct | Round | L | SI1 | Ideal
From $1,067
Compare at $1,581
Save 10.3%IGI | 0.91ct | Round | K | SI1 | Excellent
From $1,068
Compare at $1,190
Save 15.9%GIA | 0.92ct | Round | K | SI2 | Excellent
From $1,070
Compare at $1,272
Save 17.7%IGI | 0.92ct | Round | K | VS1 | Excellent
From $1,070
Compare at $1,301
Save 29.4%GIA | 0.94ct | Round | K | SI1 | Ideal
From $1,071
Compare at $1,517
Entry pricing in this category starts around $425.
What to Know When Shopping for 0.9 Carat Round Natural Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $8,572 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 $2,598 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 3,036 comparable stones in this segment. Prices start around $425 and go up to $8,997.
Based on the latest market data, the average asking price is about $2,883 with a median around $2,598.
The observed spread is roughly $8,572 across tracked listings, which is about 95.3% 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 $2,883. The median price is $2,598, 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 8 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 $8,572 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 0.9 carat Round diamonds.