1.8 Carat Round Natural Diamond Prices Comparison
As of April 2026, 1.8 carat round natural diamonds usually range from $978 to $37,602, with an average price of $14,417.In the last month, prices for these diamonds are down 1.1%.Compare 414 verified listings across 7 retailers tracked by CaratRadar.
1.8 Carat Round Natural Diamond Market Overview
CaratRadar currently tracks 414 verified 1.8-carat round natural diamonds listed across 7 online retailers. Prices in this segment range from $978 to $37,602, with an average asking price of $14,417 and a median of $13,321.
The price spread of $36,624 (97.4% 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.
414 diamonds tracked in this segment
Price range: $978 to $37,602
Average price: $14,417
Median price: $13,321
Available across 7 retailers
Savings potential: up to 97.4%
Price Range Overview
As of Apr 14, 2026Real market range for this carat, shape, and diamond type.
414
$978
$14,417
$13,321
$37,602
Price History
Price Comparison Matrix
Live Listings
See all listingsCompare current retailer offers for this exact segment and open any listing for full details.
GIA | 1.81ct | Round | D | VVS1 | Excellent
From $37,165
Compare at $41,015
Save 17%GIA | 1.81ct | Round | G | VS1 | Very Good
From $20,989
Compare at $25,283
Save 12.9%GIA | 1.81ct | Round | I | VS1 | Excellent
From $11,425
Compare at $13,110
Save 16.9%GIA | 1.81ct | Round | G | VVS1 | Excellent
From $18,734
Compare at $22,553
Save 17%GIA | 1.81ct | Round | E | VS2 | Excellent
From $20,652
Compare at $24,875
Save 22.1%GIA | 1.81ct | Round | J | SI2 | Excellent
From $7,621
Compare at $9,780
Save 36%GIA | 1.81ct | Round | J | SI1 | Excellent
From $6,932
Compare at $10,824
GIA | 1.81ct | Round | G | SI1 | Excellent
From $14,899
Compare at $15,673
Save 22%GIA | 1.81ct | Round | J | SI1 | Excellent
From $7,310
Compare at $9,375
GIA | 1.81ct | Round | I | SI2 | Excellent
From $9,122
Compare at $10,283
Save 21.1%GIA | 1.81ct | Round | I | VS1 | Excellent
From $10,701
Compare at $13,567
Save 29%GIA | 1.81ct | Round | E | SI2 | Excellent
From $10,829
Compare at $15,252
Save 36%GIA | 1.81ct | Round | I | SI2 | Excellent
From $8,216
Compare at $12,830
Save 13%GIA | 1.81ct | Round | F | IF | Excellent
From $24,155
Compare at $27,774
Save 36.4%GIA | 1.81ct | Round | F | VS1 | Excellent
From $18,623
Compare at $29,275
Save 11.2%GIA | 1.81ct | Round | D | SI2 | Excellent
From $9,610
Compare at $10,821
GIA | 1.81ct | Round | G | VVS1 | Excellent
From $20,895
Compare at $21,673
Save 30.5%GIA | 1.81ct | Round | J | VS2 | Excellent
From $7,825
Compare at $11,255
GIA | 1.81ct | Round | E | VS2 | Ideal
From $15,494
Compare at $16,655
Save 20.3%GIA | 1.81ct | Round | D | SI2 | Excellent
From $11,383
Compare at $14,290
Save 11.2%GIA | 1.81ct | Round | F | VVS2 | Ideal
From $20,095
Compare at $22,622
Save 19.1%GIA | 1.81ct | Round | G | VVS2 | Excellent
From $14,163
Compare at $17,511
GIA | 1.81ct | Round | F | VVS1 | Excellent
From $24,126
Compare at $25,211
GIA | 1.81ct | Round | H | VS1 | Excellent
From $12,581
Compare at $13,437
Save 13.8%GIA | 1.81ct | Round | H | VS2 | Ideal
From $10,186
Compare at $11,816
GIA | 1.81ct | Round | H | SI1 | Ideal
From $7,983
Compare at $8,564
GIA | 1.81ct | Round | I | VS1 | Excellent
From $12,030
Compare at $12,618
Save 32.4%GIA | 1.81ct | Round | H | VVS2 | Ideal
From $15,330
Compare at $22,664
Save 13%GIA | 1.81ct | Round | I | VS2 | Ideal
From $7,557
Compare at $8,690
Save 13.7%GIA | 1.81ct | Round | D | SI2 | Ideal
From $7,709
Compare at $8,934
Save 23.9%GIA | 1.81ct | Round | E | VVS2 | Excellent
From $15,403
Compare at $20,238
Save 17.7%GIA | 1.81ct | Round | K | SI1 | Ideal
From $4,512
Compare at $5,484
Save 12.9%GIA | 1.81ct | Round | I | VS1 | Ideal
From $10,340
Compare at $11,866
Save 15.9%GIA | 1.81ct | Round | D | VVS1 | Ideal
From $21,158
Compare at $25,168
Save 19.8%GIA | 1.81ct | Round | K | VVS1 | Excellent
From $7,952
Compare at $9,920
Save 13.7%GIA | 1.81ct | Round | D | IF | Ideal
From $29,749
Compare at $34,456
Save 17.1%GIA | 1.81ct | Round | E | VS1 | Excellent
From $25,483
Compare at $30,725
GIA | 1.81ct | Round | H | VS2 | Excellent
From $13,582
Compare at $15,416
Save 17%GIA | 1.81ct | Round | D | VS2 | Very Good
From $19,860
Compare at $23,915
GIA | 1.81ct | Round | D | SI1 | Ideal
From $15,497
Compare at $15,598
Save 18.4%GIA | 1.81ct | Round | K | SI1 | Excellent
From $4,514
Compare at $5,531
Save 20.3%GIA | 1.81ct | Round | G | SI1 | Excellent
From $11,382
Compare at $14,287
GIA | 1.81ct | Round | I | SI2 | Excellent
From $12,398
Compare at $14,117
Save 27%GIA | 1.81ct | Round | G | SI1 | Excellent
From $12,356
Compare at $16,923
Save 21.1%GIA | 1.81ct | Round | K | VVS2 | Excellent
From $10,506
Compare at $13,318
GIA | 1.81ct | Round | D | VVS1 | Ideal
From $21,474
Compare at $21,475
Save 12.9%GIA | 1.81ct | Round | G | SI1 | Excellent
From $10,634
Compare at $12,203
Save 18.3%GIA | 1.81ct | Round | I | SI1 | Excellent
From $8,696
Compare at $10,638
Save 30.5%GIA | 1.81ct | Round | I | SI2 | Excellent
From $8,277
Compare at $11,912
Save 27.6%GIA | 1.81ct | Round | F | SI1 | Excellent
From $12,577
Compare at $17,378
Entry pricing in this category starts around $978.
What to Know When Shopping for 1.8 Carat Round Natural Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $36,624 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 $13,321 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 414 comparable stones in this segment. Prices start around $978 and go up to $37,602.
Based on the latest market data, the average asking price is about $14,417 with a median around $13,321.
The observed spread is roughly $36,624 across tracked listings, which is about 97.4% 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 $13,321, 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 7 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 $36,624 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 1.8 carat Round diamonds.