4.2 Carat Round Natural Diamond Prices Comparison
As of February 2026, 4.2 carat round natural diamonds usually range from $994 to $232,312, with an average price of $72,026.In the last month, prices for these diamonds are down 1.7%.Compare 44 verified listings across 6 retailers tracked by CaratRadar.
4.2 Carat Round Natural Diamond Market Overview
CaratRadar currently tracks 44 verified 4.2-carat round natural diamonds listed across 6 online retailers. Prices in this segment range from $994 to $232,312, with an average asking price of $72,026 and a median of $68,648.
The price spread of $231,318 (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.
44 diamonds tracked in this segment
Price range: $994 to $232,312
Average price: $72,026
Median price: $68,648
Available across 6 retailers
Savings potential: up to 99.6%
Price Range Overview
As of Feb 28, 2026Real market range for this carat, shape, and diamond type.
44
$994
$72,026
$68,648
$232,312
Price History
Price Comparison Matrix
Live Listings
See all listingsCompare current retailer offers for this exact segment and open any listing for full details.
4.16ct | Round | H | VS2 | Excellent
From $93,288
Compare at $114,538
4.16ct | Round | E | VVS2 | Excellent
From $204,598
Compare at $227,721
4.16ct | Round | D | VVS1 | Excellent
From $232,312
Compare at $274,118
GIASave 10.4%4.16ct | Round | H | VS2 | Excellent
From $75,276
Compare at $84,013
GIASave 39.1%4.16ct | Round | K | SI1 | Excellent
From $35,722
Compare at $58,690
GIA4.17ct | Round | D | VVS2 | Excellent
From $112,950
Compare at $119,965
GIASave 11%4.17ct | Round | H | VS2 | Ideal
From $72,378
Compare at $81,315
IGISave 68.6%4.17ct | Round | F | VS2 | Ideal
From $994
Compare at $3,165
GIA4.17ct | Round | E | SI2 | Excellent
From $50,330
Compare at $53,879
GIA4.18ct | Round | G | IF | Excellent
From $149,490
Compare at $149,777
GIASave 11.3%4.18ct | Round | D | SI1 | Excellent
From $89,087
Compare at $100,429
GIASave 21.5%4.18ct | Round | E | VS1 | Excellent
From $115,357
Compare at $146,860
GIA4.18ct | Round | J | VS1 | Excellent
From $66,048
Compare at $73,331
GIASave 65.6%4.19ct | Round | D | VVS1 | Excellent
From $6,095
Compare at $17,695
4.19ct | Round | I | SI1 | Excellent
From $78,706
Compare at $91,553
GIA4.19ct | Round | K | SI1 | Excellent
From $42,734
Compare at $45,463
GIA4.2ct | Round | G | VVS1 | Excellent
From $77,979
Compare at $79,613
GIASave 13%4.2ct | Round | K | SI2 | Excellent
From $31,189
Compare at $35,859
IGISave 71.7%4.2ct | Round | D | VS1 | Ideal
From $1,213
Compare at $4,280
GIASave 13.9%4.2ct | Round | G | SI2 | Excellent
From $59,892
Compare at $69,536
GIASave 13.9%4.2ct | Round | I | VS1 | Ideal
From $66,654
Compare at $77,379
GIA4.2ct | Round | E | SI1 | Excellent
From $73,301
Compare at $77,418
GIA4.2ct | Round | I | VVS1 | Ideal
From $56,360
Compare at $59,883
GIASave 41.3%4.21ct | Round | J | SI1 | Excellent
From $43,940
Compare at $74,800
GIA4.21ct | Round | D | VVS2 | Excellent
From $167,129
Compare at $181,040
GIASave 13.9%4.21ct | Round | G | SI2 | Excellent
From $59,066
Compare at $68,579
GIASave 82.2%4.21ct | Round | D | VVS1 | Excellent
From $4,343
Compare at $24,350
GIASave 11.8%4.22ct | Round | J | SI1 | Ideal
From $51,064
Compare at $57,901
GIASave 69.3%4.22ct | Round | D | VVS1 | Excellent
From $5,329
Compare at $17,373
GIA4.22ct | Round | G | VVS2 | Ideal
From $93,660
Compare at $101,848
GIA4.22ct | Round | I | VVS1 | Ideal
From $86,081
Compare at $88,992
GIASave 64%4.22ct | Round | D | VVS2 | Excellent
From $3,614
Compare at $10,030
IGISave 62.1%4.22ct | Round | E | VVS2 | Ideal
From $2,228
Compare at $5,884
GIASave 13.8%4.23ct | Round | E | VS1 | Excellent
From $100,696
Compare at $116,863
GIASave 13.8%4.23ct | Round | G | VS1 | Excellent
From $99,820
Compare at $115,847
4.23ct | Round | H | SI2 | Excellent
From $59,390
Compare at $70,416
GIASave 16.9%4.23ct | Round | H | VS1 | Excellent
From $70,641
Compare at $84,956
GIASave 15.1%4.23ct | Round | H | VS1 | Excellent
From $80,337
Compare at $94,598
GIASave 14.6%4.23ct | Round | J | SI2 | Ideal
From $42,225
Compare at $49,422
GIA4.23ct | Round | H | SI1 | Very Good
From $66,081
Compare at $69,203
GIASave 16.1%4.23ct | Round | I | VS2 | Excellent
From $54,700
Compare at $65,228
GIA4.24ct | Round | G | SI1 | Ideal
From $74,140
Compare at $80,152
GIA4.24ct | Round | J | VS2 | Excellent
From $76,985
Compare at $81,159
GIA4.24ct | Round | D | VS1 | Excellent
From $135,719
Compare at $136,801
Entry pricing in this category starts around $994.
What to Know When Shopping for 4.2 Carat Round Natural Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $231,318 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 $68,648 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 44 comparable stones in this segment. Prices start around $994 and go up to $232,312.
Based on the latest market data, the average asking price is about $72,026 with a median around $68,648.
The observed spread is roughly $231,318 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 our data, the median price is $68,648, 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 6 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 $231,318 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.
Related Price Categories
Explore adjacent carat ranges and shapes to compare market shifts.
4.1 Carat Round Natural Diamond Prices
4.3 Carat Round Natural Diamond Prices
4 Carat Round Natural Diamond Prices
4.4 Carat Round Natural Diamond Prices
3.9 Carat Round Natural Diamond Prices
4.5 Carat Round Natural Diamond Prices
3.8 Carat Round Natural Diamond Prices
4.2 Carat Oval Natural Diamond Prices
4.2 Carat Emerald Natural Diamond Prices
4.2 Carat Cushion Natural Diamond Prices
4.2 Carat Radiant Natural Diamond Prices
Tracking Natural inventory for 4.2 carat Round diamonds.