12 Carat Round Lab Grown Diamond Prices Comparison
As of March 2026, 12 carat round lab grown diamonds usually range from $3,908 to $34,650, with an average price of $10,264.In the last month, prices for these diamonds are up 1.4%.Compare 32 verified listings across 6 retailers tracked by CaratRadar.
12 Carat Round Lab Grown Diamond Market Overview
CaratRadar currently tracks 32 verified 12-carat round lab grown diamonds listed across 6 online retailers. Prices in this segment range from $3,908 to $34,650, with an average asking price of $10,264 and a median of $7,258.
The price spread of $30,742 (88.7% 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.
32 diamonds tracked in this segment
Price range: $3,908 to $34,650
Average price: $10,264
Median price: $7,258
Available across 6 retailers
Savings potential: up to 88.7%
Price Range Overview
As of Mar 1, 2026Real market range for this carat, shape, and diamond type.
32
$3,908
$10,264
$7,258
$34,650
Price History
Price Comparison Matrix
Live Listings
See all listingsCompare current retailer offers for this exact segment and open any listing for full details.
IGISave 77.3%12ct | Round | G | VS2 | Ideal
From $4,822
Compare at $21,210
IGISave 82.9%12ct | Round | E | VS1 | Ideal
From $8,025
Compare at $46,930
IGISave 79.5%12ct | Round | F | VS1 | Ideal
From $5,824
Compare at $28,400
IGI12ct | Round | D | VS1 | Excellent
From $13,905
Compare at $14,981
GIASave 47.7%12ct | Round | F | VVS2 | Ideal
From $34,650
Compare at $66,220
IGISave 80.5%12ct | Round | E | VVS2 | Ideal
From $6,932
Compare at $35,620
GIASave 49.1%12.01ct | Round | E | VS1 | Ideal
From $33,750
Compare at $66,280
IGISave 61.5%12.01ct | Round | D | VS1 | Ideal
From $10,614
Compare at $27,600
IGISave 58.7%12.02ct | Round | F | SI1 | Ideal
From $7,380
Compare at $17,890
IGISave 51.3%12.02ct | Round | E | VS2 | Ideal
From $13,523
Compare at $27,780
IGISave 58.7%12.02ct | Round | F | SI1 | Ideal
From $7,380
Compare at $17,890
IGISave 79%12.02ct | Round | G | VS1 | Ideal
From $5,301
Compare at $25,190
IGISave 63.5%12.02ct | Round | F | VS1 | Excellent
From $17,351
Compare at $47,560
IGISave 25.1%12.02ct | Round | F | VS1 | Excellent
From $4,277
Compare at $5,711
IGISave 59%12.03ct | Round | G | VS2 | Ideal
From $13,354
Compare at $32,600
IGISave 84.2%12.03ct | Round | F | VS2 | Ideal
From $4,039
Compare at $25,500
IGISave 75%12.03ct | Round | G | VS1 | Ideal
From $6,321
Compare at $25,320
IGISave 49.6%12.03ct | Round | F | VVS2 | Excellent
From $7,135
Compare at $14,159
IGI12.03ct | Round | F | VS2 | Excellent
From $5,745
Compare at $5,834
IGISave 63.6%12.04ct | Round | F | VS2 | Ideal
From $15,064
Compare at $41,340
IGISave 81.4%12.04ct | Round | E | VVS2 | Ideal
From $6,632
Compare at $35,690
GIASave 70.1%12.04ct | Round | E | VS2 | Excellent
From $16,786
Compare at $56,220
IGISave 53.1%12.04ct | Round | F | SI1 | Ideal
From $8,428
Compare at $17,970
IGISave 20%12.04ct | Round | F | VS1 | Ideal
From $19,057
Compare at $23,813
IGISave 24.3%12.04ct | Round | G | VS1 | Excellent
From $4,735
Compare at $6,252
IGISave 62%12.05ct | Round | F | VS1 | Ideal
From $5,228
Compare at $13,745
IGISave 81.4%12.05ct | Round | E | VVS2 | Excellent
From $6,637
Compare at $35,720
IGISave 25.2%12.05ct | Round | F | VS1 | Excellent
From $4,346
Compare at $5,812
IGISave 70.3%12.05ct | Round | E | VVS2 | Ideal
From $7,461
Compare at $25,121
GIASave 71.9%12.05ct | Round | E | VS2 | Ideal
From $13,547
Compare at $48,140
IGISave 89%12.05ct | Round | F | VS1 | Excellent
From $6,301
Compare at $57,352
IGISave 72%12.05ct | Round | G | SI2 | Excellent
From $3,908
Compare at $13,960
Entry pricing in this category starts around $3,908.
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 $30,742 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 $7,258 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 32 comparable stones in this segment. Prices start around $3,908 and go up to $34,650.
Based on the latest market data, the average asking price is about $10,264 with a median around $7,258.
The observed spread is roughly $30,742 across tracked listings, which is about 88.7% 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 $7,258, 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 $30,742 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.