1.6 Carat Radiant Lab Grown Diamond Prices Comparison
As of February 2026, 1.6 carat radiant lab grown diamonds usually range from $331 to $5,620, with an average price of $647.In the last month, prices for these diamonds are down 2.3%.Compare 6,129 verified listings across 11 retailers tracked by CaratRadar.
1.6 Carat Radiant Lab Grown Diamond Market Overview
CaratRadar currently tracks 6,129 verified 1.6-carat radiant lab grown diamonds listed across 11 online retailers. Prices in this segment range from $331 to $5,620, with an average asking price of $647 and a median of $551.
The price spread of $5,289 (94.1% 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.
6,129 diamonds tracked in this segment
Price range: $331 to $5,620
Average price: $647
Median price: $551
Available across 11 retailers
Savings potential: up to 94.1%
Price Range Overview
As of Feb 28, 2026Real market range for this carat, shape, and diamond type.
6,129
$331
$647
$551
$5,620
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 63.5%1.56ct | Radiant | G | VS2 | Ideal
From $2,720
Compare at $7,450
IGISave 21.4%1.56ct | Radiant | F | VS2 | Ideal
From $450
Compare at $573
IGISave 53.1%1.56ct | Radiant | I | VS1 | Ideal
From $875
Compare at $1,864
IGISave 62%1.56ct | Radiant | H | SI1 | Ideal
From $2,168
Compare at $5,712
IGISave 72.6%1.56ct | Radiant | G | VS1 | Ideal
From $514
Compare at $1,880
IGISave 64.5%1.56ct | Radiant | F | VS1 | Ideal
From $3,100
Compare at $8,735
IGISave 62.7%1.56ct | Radiant | G | VS1 | Ideal
From $3,144
Compare at $8,435
IGISave 79.5%1.56ct | Radiant | G | VVS2 | Excellent
From $591
Compare at $2,880
IGISave 79%1.56ct | Radiant | H | VS1 | Ideal
From $487
Compare at $2,320
IGISave 72.6%1.56ct | Radiant | E | SI1 | Ideal
From $518
Compare at $1,890
IGISave 38.7%1.56ct | Radiant | G | VS2 | Excellent
From $849
Compare at $1,386
IGISave 84.3%1.56ct | Radiant | D | VVS2 | Ideal
From $493
Compare at $3,130
IGISave 70.1%1.56ct | Radiant | G | VS1 | Very Good
From $655
Compare at $2,190
IGISave 17.4%1.56ct | Radiant | G | SI1 | Ideal
From $547
Compare at $662
IGISave 84.2%1.56ct | Radiant | D | VVS1 | Ideal
From $566
Compare at $3,590
IGISave 70.1%1.56ct | Radiant | F | VVS2 | Very Good
From $687
Compare at $2,300
IGISave 75.2%1.56ct | Radiant | E | IF | Excellent
From $1,052
Compare at $4,240
IGISave 80.7%1.56ct | Radiant | E | VS2 | Ideal
From $572
Compare at $2,960
IGISave 72.6%1.56ct | Radiant | G | VS1 | Ideal
From $514
Compare at $1,880
IGISave 77.5%1.56ct | Radiant | E | VS1 | Ideal
From $528
Compare at $2,350
IGISave 64.7%1.56ct | Radiant | F | VS1 | Very Good
From $499
Compare at $1,415
IGISave 75.9%1.56ct | Radiant | F | VS1 | Ideal
From $546
Compare at $2,270
IGISave 81.1%1.56ct | Radiant | E | VVS2 | Ideal
From $603
Compare at $3,190
IGISave 39.3%1.56ct | Radiant | F | VS1 | Very Good
From $499
Compare at $822
IGISave 79.8%1.56ct | Radiant | E | VVS2 | Excellent
From $531
Compare at $2,630
IGISave 78.2%1.56ct | Radiant | D | VS1 | Ideal
From $483
Compare at $2,217
IGISave 79.7%1.56ct | Radiant | E | VS2 | Ideal
From $602
Compare at $2,960
IGISave 79.7%1.56ct | Radiant | E | VS2 | Ideal
From $602
Compare at $2,960
IGISave 80.4%1.56ct | Radiant | D | VS1 | Ideal
From $645
Compare at $3,290
IGISave 59.6%1.56ct | Radiant | D | VS1 | Ideal
From $481
Compare at $1,190
IGISave 81.8%1.56ct | Radiant | D | VVS2 | Excellent
From $611
Compare at $3,360
IGISave 80.6%1.56ct | Radiant | D | VVS2 | Ideal
From $660
Compare at $3,400
IGISave 79.2%1.56ct | Radiant | E | VVS2 | Ideal
From $541
Compare at $2,600
IGISave 73.4%1.56ct | Radiant | D | VS1 | Ideal
From $876
Compare at $3,290
IGISave 80.2%1.56ct | Radiant | E | VVS2 | Ideal
From $633
Compare at $3,190
IGISave 74.4%1.56ct | Radiant | D | VVS2 | Excellent
From $624
Compare at $2,440
IGISave 73.4%1.56ct | Radiant | E | VVS2 | Ideal
From $850
Compare at $3,190
IGISave 80.4%1.56ct | Radiant | D | VS1 | Ideal
From $645
Compare at $3,290
IGISave 77.6%1.56ct | Radiant | E | VVS2 | Ideal
From $583
Compare at $2,600
IGISave 70.9%1.56ct | Radiant | F | VS1 | Ideal
From $860
Compare at $2,950
IGISave 31.3%1.56ct | Radiant | D | VS1 | Very Good
From $665
Compare at $967
GCALSave 64.5%1.56ct | Radiant | G | VS2 | Excellent
From $985
Compare at $2,770
GCALSave 73.6%1.56ct | Radiant | E | VVS2 | Excellent
From $889
Compare at $3,360
GCALSave 74.2%1.56ct | Radiant | D | VS2 | Excellent
From $1,086
Compare at $4,210
GIASave 81.9%1.56ct | Radiant | E | VS1 | Excellent
From $787
Compare at $4,360
GIASave 18.7%1.56ct | Radiant | E | VS1 | Excellent
From $1,111
Compare at $1,367
GIASave 34.7%1.56ct | Radiant | D | VS1 | Excellent
From $2,710
Compare at $4,150
GIASave 80.6%1.56ct | Radiant | D | VS2 | Excellent
From $893
Compare at $4,610
GIASave 76.5%1.56ct | Radiant | E | VS1 | Ideal
From $1,023
Compare at $4,360
GIASave 23.5%1.56ct | Radiant | E | SI1 | Excellent
From $911
Compare at $1,191
Entry pricing in this category starts around $331.
What to Know When Shopping for 1.6 Carat Radiant Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $5,289 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 $551 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 6,129 comparable stones in this segment. Prices start around $331 and go up to $5,620.
Based on the latest market data, the average asking price is about $647 with a median around $551.
The observed spread is roughly $5,289 across tracked listings, which is about 94.1% 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 $551, 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 11 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 $5,289 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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