1.8 Carat Round Natural Diamond Prices Comparison
As of February 2026, 1.8 carat round natural diamonds usually range from $478 to $55,559, with an average price of $14,539.In the last month, prices for these diamonds are down 1.3%.Compare 1,142 verified listings across 7 retailers tracked by CaratRadar.
1.8 Carat Round Natural Diamond Market Overview
CaratRadar currently tracks 1,142 verified 1.8-carat round natural diamonds listed across 7 online retailers. Prices in this segment range from $478 to $55,559, with an average asking price of $14,539 and a median of $13,461.
The price spread of $55,081 (99.1% 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.
1,142 diamonds tracked in this segment
Price range: $478 to $55,559
Average price: $14,539
Median price: $13,461
Available across 7 retailers
Savings potential: up to 99.1%
Price Range Overview
As of Feb 28, 2026Real market range for this carat, shape, and diamond type.
1,142
$478
$14,539
$13,461
$55,559
Price History
Price Comparison Matrix
Live Listings
See all listingsCompare current retailer offers for this exact segment and open any listing for full details.
GIASave 14.7%1.75ct | Round | D | SI2 | Ideal
From $7,075
Compare at $8,299
GIASave 40.2%1.75ct | Round | K | VVS1 | Ideal
From $5,798
Compare at $9,688
GIA1.75ct | Round | H | VS2 | Excellent
From $19,609
Compare at $20,127
1.75ct | Round | I | SI2 | Excellent
From $8,441
Compare at $9,518
GIA1.75ct | Round | I | VS2 | Excellent
From $7,369
Compare at $7,790
GIA1.75ct | Round | G | IF | Ideal
From $19,620
Compare at $20,922
GIASave 32.2%1.75ct | Round | K | SI1 | Excellent
From $5,583
Compare at $8,239
GIA1.75ct | Round | H | VS2 | Excellent
From $20,366
Compare at $20,885
GIASave 39.2%1.75ct | Round | G | VS2 | Ideal
From $11,628
Compare at $19,114
GIA1.75ct | Round | D | SI1 | Ideal
From $13,520
Compare at $13,919
GIA1.75ct | Round | D | FL | Excellent
From $36,624
Compare at $38,570
GIASave 38.9%1.75ct | Round | K | VS1 | Ideal
From $6,790
Compare at $11,120
GIASave 10.9%1.75ct | Round | K | IF | Excellent
From $6,947
Compare at $7,800
GIASave 22.9%1.75ct | Round | I | SI2 | Excellent
From $6,479
Compare at $8,398
GIASave 10.8%1.75ct | Round | K | SI2 | Ideal
From $4,062
Compare at $4,553
GIASave 21.8%1.75ct | Round | L | SI1 | Ideal
From $3,441
Compare at $4,400
GIA1.75ct | Round | I | SI2 | Ideal
From $8,110
Compare at $8,117
GIA1.75ct | Round | I | VVS1 | Excellent
From $16,531
Compare at $16,805
GIA1.75ct | Round | J | VS2 | Excellent
From $11,492
Compare at $11,551
GIA1.75ct | Round | E | VS1 | Excellent
From $32,929
Compare at $34,339
GIA1.75ct | Round | D | VVS1 | Ideal
From $25,780
Compare at $26,409
GIASave 11.8%1.75ct | Round | F | VS2 | Good
From $15,156
Compare at $17,191
GIASave 39.9%1.75ct | Round | H | VVS1 | Excellent
From $17,660
Compare at $29,381
GIASave 35.9%1.75ct | Round | I | VS1 | Excellent
From $10,375
Compare at $16,185
GIASave 37.6%1.75ct | Round | G | VVS1 | Excellent
From $18,810
Compare at $30,168
GIASave 33.2%1.75ct | Round | F | VVS2 | Excellent
From $15,050
Compare at $22,533
GIASave 16.4%1.75ct | Round | D | VS2 | Excellent
From $12,676
Compare at $15,155
GIA1.75ct | Round | E | IF | Excellent
From $27,003
Compare at $27,540
GIASave 30.3%1.75ct | Round | J | VS1 | Excellent
From $8,795
Compare at $12,625
GIASave 57.5%1.75ct | Round | G | VVS1 | Ideal
From $17,709
Compare at $41,661
1.75ct | Round | F | VVS1 | Excellent
From $25,771
Compare at $29,586
GIA1.75ct | Round | F | VS1 | Excellent
From $21,547
Compare at $22,308
GIASave 29.6%1.75ct | Round | L | SI2 | Excellent
From $3,525
Compare at $5,004
GIASave 19.1%1.75ct | Round | G | VS1 | Excellent
From $13,349
Compare at $16,509
GIA1.75ct | Round | F | VS2 | Excellent
From $20,030
Compare at $21,083
GIASave 13.2%1.75ct | Round | D | IF | Excellent
From $25,266
Compare at $29,098
GIA1.75ct | Round | J | SI1 | Excellent
From $11,565
Compare at $11,628
GIA1.75ct | Round | I | SI2 | Excellent
From $7,631
Compare at $7,725
1.75ct | Round | E | VVS2 | Excellent
From $19,804
Compare at $20,549
GIA1.75ct | Round | J | VS1 | Excellent
From $11,931
Compare at $12,827
GIA1.75ct | Round | J | SI1 | Excellent
From $11,407
Compare at $11,692
GIASave 35.5%1.75ct | Round | H | VVS2 | Excellent
From $14,906
Compare at $23,111
GIA1.75ct | Round | D | VS2 | Excellent
From $29,692
Compare at $31,012
1.75ct | Round | H | VVS2 | Excellent
From $14,863
Compare at $15,486
GIASave 35%1.75ct | Round | F | VS1 | Excellent
From $18,418
Compare at $28,323
GIASave 57.5%1.75ct | Round | H | SI1 | Ideal
From $8,892
Compare at $20,901
GIA1.75ct | Round | H | VS1 | Excellent
From $22,588
Compare at $23,363
GIA1.75ct | Round | J | VS1 | Excellent
From $9,726
Compare at $9,732
IGI1.75ct | Round | H | VS2 | Excellent
From $7,640
Compare at $7,750
GIASave 45.2%1.75ct | Round | K | SI1 | Ideal
From $3,933
Compare at $7,183
Entry pricing in this category starts around $478.
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 $55,081 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 $13,461 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 1,142 comparable stones in this segment. Prices start around $478 and go up to $55,559.
Based on the latest market data, the average asking price is about $14,539 with a median around $13,461.
The observed spread is roughly $55,081 across tracked listings, which is about 99.1% 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 $13,461, 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 $55,081 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.