5.1 Carat Round Natural Diamond Prices Comparison
As of July 2026, 5.1 carat round natural diamonds usually range from $1,614 to $364,131, with an average price of $105,682.In the last month, prices for these diamonds are flat -0%.Compare 61 verified listings across 8 retailers tracked by CaratRadar.
5.1 Carat Round Natural Diamond Market Overview
CaratRadar currently tracks 61 verified 5.1-carat round natural diamonds listed across 8 online retailers. Prices in this segment range from $1,614 to $364,131, with an average asking price of $105,682 and a median of $94,717.
The price spread of $362,517 (99.6% 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.
61 diamonds tracked in this segment
Price range: $1,614 to $364,131
Average price: $105,682
Median price: $94,717
Available across 8 retailers
Savings potential: up to 99.6%
Price Range Overview
As of Jul 11, 2026Real market range for this carat, shape, and diamond type.
61
$1,614
$105,682
$94,717
$364,131
Price History
Price Comparison Matrix
Live Listings
See all listingsCompare current retailer offers for this exact segment and open any listing for full details.
HRD | 5.2ct | Round | I | I1 | Excellent
From $26,871
Compare at $29,070
Save 15.6%GIA | 5.2ct | Round | L | SI2 | Excellent
From $34,394
Compare at $40,755
Save 16%IGI | 5.19ct | Round | I | SI2 | Ideal
From $35,303
Compare at $42,019
Save 34.9%GIA | 5.16ct | Round | K | SI1 | Excellent
From $44,465
Compare at $68,284
Save 11.7%GIA | 5.15ct | Round | J | SI2 | Excellent
From $48,785
Compare at $55,267
GIA | 5.16ct | Round | L | SI1 | Good
From $49,199
Compare at $51,346
Save 32.9%GIA | 5.18ct | Round | I | SI2 | Very Good
From $50,934
Compare at $75,921
IGI | 5.1ct | Round | I | SI2 | Ideal
From $51,710
Compare at $53,920
Save 32.2%GIA | 5.13ct | Round | L | SI1 | Excellent
From $54,267
Compare at $80,043
GIA | 5.14ct | Round | K | SI2 | Excellent
From $57,281
Compare at $58,510
Save 31.5%GIA | 5.18ct | Round | K | VVS2 | Excellent
From $57,318
Compare at $83,717
GIA | 5.15ct | Round | K | SI1 | Excellent
From $58,675
Compare at $62,545
Save 34.6%GIA | 5.12ct | Round | J | SI2 | Excellent
From $58,930
Compare at $90,090
Save 33.5%GIA | 5.14ct | Round | J | SI2 | Excellent
From $60,160
Compare at $90,441
Save 12.5%GIA | 5.14ct | Round | I | SI1 | Ideal
From $63,669
Compare at $72,774
Save 28.3%GIA | 5.15ct | Round | K | SI1 | Ideal
From $63,975
Compare at $89,281
Save 33.5%GIA | 5.1ct | Round | H | SI2 | Ideal
From $64,985
Compare at $97,677
Save 36.2%GIA | 5.12ct | Round | J | SI2 | Excellent
From $66,121
Compare at $103,578
IGI | 5.12ct | Round | H | VS1 | Excellent
From $66,122
Compare at $66,125
Save 11.7%GIA | 5.2ct | Round | I | SI2 | Excellent
From $68,160
Compare at $77,217
GIA | 5.15ct | Round | J | VS2 | Excellent
From $70,693
Compare at $74,115
Save 11.7%GIA | 5.12ct | Round | G | SI2 | Excellent
From $70,832
Compare at $80,246
GIA | 5.15ct | Round | J | SI1 | Excellent
From $74,340
Compare at $74,716
GIA | 5.1ct | Round | J | SI2 | Very Good
From $76,809
Compare at $77,513
GIA | 5.1ct | Round | J | SI2 | Excellent
From $78,939
Compare at $83,180
GIA | 5.11ct | Round | I | VS1 | Excellent
From $78,981
Compare at $82,690
Save 40.1%GIA | 5.2ct | Round | H | SI1 | Excellent
From $79,523
Compare at $132,702
Save 32%GIA | 5.1ct | Round | J | VVS1 | Excellent
From $85,242
Compare at $125,416
Save 32%GIA | 5.13ct | Round | D | SI2 | Excellent
From $94,075
Compare at $138,412
Save 12.3%GIA | 5.2ct | Round | I | VS1 | Ideal
From $94,432
Compare at $107,632
Save 34.2%GIA | 5.13ct | Round | H | SI2 | Excellent
From $97,626
Compare at $148,281
Save 28%GIA | 5.11ct | Round | J | VVS1 | Excellent
From $99,130
Compare at $137,718
GIA | 5.13ct | Round | K | VVS1 | Excellent
From $108,204
Compare at $113,440
GIA | 5.19ct | Round | J | SI1 | Excellent
From $108,391
Compare at $118,411
Save 31.7%GIA | 5.1ct | Round | G | SI2 | Ideal
From $112,839
Compare at $165,185
Save 37.3%GIA | 5.1ct | Round | G | SI1 | Excellent
From $113,087
Compare at $180,336
Save 35%GIA | 5.1ct | Round | H | VVS2 | Ideal
From $113,612
Compare at $174,669
GIA | 5.1ct | Round | F | SI1 | Ideal
From $118,240
Compare at $126,612
Save 11.3%GIA | 5.15ct | Round | H | VS2 | Excellent
From $120,543
Compare at $135,877
Save 17.6%GIA | 5.12ct | Round | D | SI1 | Excellent
From $131,250
Compare at $159,352
GIA | 5.14ct | Round | E | SI1 | Excellent
From $135,401
Compare at $136,559
Save 39.2%GIA | 5.12ct | Round | G | VS2 | Excellent
From $136,462
Compare at $224,611
Save 14%GIA | 5.18ct | Round | G | VS1 | Excellent
From $141,635
Compare at $164,605
Save 34.9%GIA | 5.16ct | Round | F | VVS1 | Excellent
From $143,597
Compare at $220,705
GIA | 5.18ct | Round | G | VS2 | Very Good
From $153,396
Compare at $159,007
Save 34.9%GIA | 5.11ct | Round | D | VS2 | Excellent
From $161,886
Compare at $248,783
Save 10.6%GIA | 5.2ct | Round | J | IF | Ideal
From $164,111
Compare at $183,581
GIA | 5.13ct | Round | G | VVS2 | Excellent
From $175,542
Compare at $191,354
GIA | 5.17ct | Round | H | IF | Ideal
From $175,557
Compare at $194,356
GIA | 5.16ct | Round | H | IF | Ideal
From $181,359
Compare at $200,780
Entry pricing in this category starts around $1,614.
What to Know When Shopping for 5.1 Carat Round Natural Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $362,517 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 $94,717 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 61 comparable stones in this segment. Prices start around $1,614 and go up to $364,131.
Based on the latest market data, the average asking price is about $105,682 with a median around $94,717.
The observed spread is roughly $362,517 across tracked listings, which is about 99.6% 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 $105,682. The median price is $94,717, 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 $362,517 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 5.1 carat Round diamonds.