12 Carat Round Lab Grown Diamond Prices Comparison
As of April 2026, 12 carat round lab grown diamonds usually range from $1,121 to $72,167, with an average price of $14,692.In the last month, prices for these diamonds are down 1.1%.Compare 42 verified listings across 5 retailers tracked by CaratRadar.
12 Carat Round Lab Grown Diamond Market Overview
CaratRadar currently tracks 42 verified 12-carat round lab grown diamonds listed across 5 online retailers. Prices in this segment range from $1,121 to $72,167, with an average asking price of $14,692 and a median of $11,704.
The price spread of $71,046 (98.4% 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.
42 diamonds tracked in this segment
Price range: $1,121 to $72,167
Average price: $14,692
Median price: $11,704
Available across 5 retailers
Savings potential: up to 98.4%
Price Range Overview
As of Apr 17, 2026Real market range for this carat, shape, and diamond type.
42
$1,121
$14,692
$11,705
$72,167
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 47.7%GIA | 12ct | Round | F | VVS2 | Ideal
From $34,650
Compare at $66,220
Save 76.7%IGI | 12ct | Round | G | VS2 | Ideal
From $4,940
Compare at $21,200
Save 49.5%IGI | 12ct | Round | G | VS1 | Ideal
From $5,987
Compare at $11,860
Save 42.8%IGI | 12ct | Round | D | VS1 | Excellent
From $13,905
Compare at $24,296
Save 76.7%IGI | 12ct | Round | E | VS1 | Ideal
From $10,917
Compare at $46,930
Save 69.5%IGI | 12ct | Round | F | VS1 | Ideal
From $5,257
Compare at $17,250
Save 51.5%IGI | 12ct | Round | F | VS2 | Excellent
From $5,025
Compare at $10,364
Save 49.1%GIA | 12.01ct | Round | E | VS1 | Ideal
From $33,750
Compare at $66,280
Save 71.2%IGI | 12.01ct | Round | D | VS1 | Ideal
From $10,520
Compare at $36,560
Save 62.9%IGI | 12.02ct | Round | F | SI1 | Ideal
From $6,642
Compare at $17,890
Save 62.9%IGI | 12.02ct | Round | F | SI1 | Ideal
From $6,642
Compare at $17,890
Save 79.7%IGI | 12.02ct | Round | G | VS1 | Ideal
From $5,072
Compare at $25,010
Save 47.3%IGI | 12.02ct | Round | F | VS1 | Excellent
From $17,351
Compare at $32,900
Save 51.5%IGI | 12.02ct | Round | F | VS2 | Excellent
From $4,872
Compare at $10,040
Save 43.3%IGI | 12.03ct | Round | G | VS2 | Ideal
From $13,354
Compare at $23,550
Save 47.3%IGI | 12.03ct | Round | F | VS1 | Ideal
From $17,366
Compare at $32,930
Save 76.6%IGI | 12.03ct | Round | F | VS2 | Ideal
From $5,978
Compare at $25,500
Save 80.9%IGI | 12.03ct | Round | F | VS2 | Ideal
From $4,870
Compare at $25,500
Save 75%IGI | 12.03ct | Round | G | VS1 | Ideal
From $6,321
Compare at $25,320
Save 53.5%IGI | 12.03ct | Round | F | VVS2 | Excellent
From $5,830
Compare at $12,529
Save 78%IGI | 12.03ct | Round | F | VS1 | Excellent
From $8,696
Compare at $39,590
IGI | 12.03ct | Round | F | VVS2 | Ideal
From $32,740
Compare at $33,624
Save 77.3%IGI | 12.03ct | Round | F | VS1 | Excellent
From $6,935
Compare at $30,610
Save 69.6%GIA | 12.04ct | Round | E | VS2 | Excellent
From $16,877
Compare at $55,590
Save 57.8%IGI | 12.04ct | Round | F | SI1 | Ideal
From $7,585
Compare at $17,970
Save 76.1%IGI | 12.04ct | Round | E | VVS2 | Ideal
From $8,555
Compare at $35,740
Save 71.5%GIA | 12.05ct | Round | E | VS2 | Ideal
From $13,548
Compare at $47,598
Save 48.8%IGI | 12.05ct | Round | F | VS1 | Excellent
From $7,200
Compare at $14,070
Save 77%IGI | 12.05ct | Round | E | VVS2 | Ideal
From $8,242
Compare at $35,770
Save 76.1%IGI | 12.05ct | Round | E | VVS2 | Excellent
From $8,562
Compare at $35,770
Save 75.7%IGI | 12.05ct | Round | G | SI2 | Excellent
From $3,410
Compare at $14,050
Save 82.5%IGI | 12.05ct | Round | F | VS1 | Ideal
From $4,988
Compare at $28,440
Save 53.6%IGI | 12.05ct | Round | E | VS2 | Excellent
From $5,308
Compare at $11,432
Save 70.1%IGI | 12.06ct | Round | E | VS2 | Ideal
From $8,330
Compare at $27,870
Save 79.4%IGI | 12.06ct | Round | F | VS1 | Ideal
From $5,853
Compare at $28,460
Save 76.7%IGI | 12.06ct | Round | G | VS1 | Ideal
From $5,847
Compare at $25,120
Save 77.2%IGI | 12.06ct | Round | G | VVS2 | Ideal
From $7,665
Compare at $33,610
Save 76.9%IGI | 12.06ct | Round | F | VVS2 | Ideal
From $7,410
Compare at $32,130
Save 76.9%IGI | 12.06ct | Round | F | VVS2 | Ideal
From $7,410
Compare at $32,130
Save 65.7%IGI | 12.08ct | Round | E | VVS2 | Ideal
From $12,275
Compare at $35,800
Save 78.5%IGI | 12.08ct | Round | G | VS1 | Ideal
From $5,421
Compare at $25,180
Save 81.1%IGI | 12.09ct | Round | F | VS1 | Ideal
From $5,406
Compare at $28,530
Entry pricing in this category starts around $1,121.
What to Know When Shopping for 12 Carat Round Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $71,046 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 $11,704 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.
- Lab-grown diamonds offer excellent value. Ensure the stone comes with a GIA or IGI certificate confirming it is laboratory-grown.
- 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 42 comparable stones in this segment. Prices start around $1,121 and go up to $72,167.
Based on the latest market data, the average asking price is about $14,692 with a median around $11,704.
The observed spread is roughly $71,046 across tracked listings, which is about 98.4% 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 $11,704, 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 5 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 $71,046 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 Lab Grown inventory for 12 carat Round diamonds.