12 Carat Radiant Lab Grown Diamond Prices Comparison
As of April 2026, 12 carat radiant lab grown diamonds usually range from $685 to $90,971, with an average price of $12,075.In the last month, prices for these diamonds are down 2.1%.Compare 27 verified listings across 3 retailers tracked by CaratRadar.
12 Carat Radiant Lab Grown Diamond Market Overview
CaratRadar currently tracks 27 verified 12-carat radiant lab grown diamonds listed across 3 online retailers. Prices in this segment range from $685 to $90,971, with an average asking price of $12,075 and a median of $8,945.
The price spread of $90,286 (99.2% 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.
27 diamonds tracked in this segment
Price range: $685 to $90,971
Average price: $12,075
Median price: $8,945
Available across 3 retailers
Savings potential: up to 99.2%
Price Range Overview
As of Apr 17, 2026Real market range for this carat, shape, and diamond type.
27
$685
$12,075
$8,945
$90,971
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 44.6%IGI | 12.01ct | Radiant | F | VS1 | Excellent
From $4,617
Compare at $8,333
Save 73.1%IGI | 12.01ct | Radiant | H | VVS2 | Ideal
From $5,088
Compare at $18,890
Save 72.9%IGI | 12.01ct | Radiant | H | VVS2 | Excellent
From $5,403
Compare at $19,930
Save 83.2%IGI | 12.02ct | Radiant | G | VS2 | Ideal
From $3,295
Compare at $19,640
Save 85.7%IGI | 12.02ct | Radiant | E | VS1 | Ideal
From $4,973
Compare at $34,780
Save 84.3%IGI | 12.02ct | Radiant | F | VVS2 | Ideal
From $4,205
Compare at $26,840
Save 35.2%IGI | 12.02ct | Radiant | E | VS2 | Excellent
From $4,582
Compare at $7,075
Save 77.7%IGI | 12.03ct | Radiant | E | VS2 | Ideal
From $7,395
Compare at $33,210
Save 30.6%IGI | 12.03ct | Radiant | G | VS2 | Ideal
From $4,111
Compare at $5,924
Save 87.1%IGI | 12.03ct | Radiant | F | VVS2 | Excellent
From $3,480
Compare at $26,960
Save 41.1%IGI | 12.03ct | Radiant | F | VVS2 | Excellent
From $3,778
Compare at $6,411
Save 41.1%IGI | 12.03ct | Radiant | F | VVS2 | Excellent
From $3,741
Compare at $6,350
Save 82.5%IGI | 12.04ct | Radiant | F | VS2 | Excellent
From $3,713
Compare at $21,230
Save 86.8%IGI | 12.04ct | Radiant | F | VVS2 | Ideal
From $3,569
Compare at $26,990
Save 85.6%IGI | 12.05ct | Radiant | G | VVS2 | Ideal
From $3,455
Compare at $23,940
Save 45.1%IGI | 12.06ct | Radiant | H | VS2 | Ideal
From $7,793
Compare at $14,204
Save 53%IGI | 12.06ct | Radiant | E | VVS2 | Ideal
From $9,853
Compare at $20,966
IGI | 12.06ct | Radiant | F | VVS2 | Ideal
From $3,743
Compare at $27,030
Save 75%GIA | 12.07ct | Radiant | F | VS2 | Very Good
From $11,768
Compare at $47,073
Save 57.7%IGI | 12.07ct | Radiant | G | VS2 | Ideal
From $8,833
Compare at $20,890
Save 51.5%IGI | 12.07ct | Radiant | G | VS2 | Ideal
From $10,299
Compare at $21,240
Save 41.1%IGI | 12.07ct | Radiant | F | VVS2 | Excellent
From $3,790
Compare at $6,432
Save 84.2%IGI | 12.07ct | Radiant | F | VS2 | Very Good
From $3,365
Compare at $21,330
Save 84.7%IGI | 12.08ct | Radiant | G | VVS2 | Ideal
From $3,667
Compare at $23,900
Save 86.7%IGI | 12.08ct | Radiant | F | VVS2 | Ideal
From $3,610
Compare at $27,060
Save 71.8%IGI | 12.09ct | Radiant | E | VVS2 | Excellent
From $8,463
Compare at $30,020
Save 84.4%IGI | 12.09ct | Radiant | E | VVS2 | Ideal
From $4,687
Compare at $30,020
Entry pricing in this category starts around $685.
What to Know When Shopping for 12 Carat Radiant Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $90,286 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 $8,945 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.
- Radiant cuts combine the elegance of emerald shapes with the brilliance of round cuts, offering good value per carat.
Frequently Asked Questions
We currently track 27 comparable stones in this segment. Prices start around $685 and go up to $90,971.
Based on the latest market data, the average asking price is about $12,075 with a median around $8,945.
The observed spread is roughly $90,286 across tracked listings, which is about 99.2% 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 $8,945, 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 3 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 $90,286 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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