1.9 Carat Radiant Lab Grown Diamond Prices Comparison
As of February 2026, 1.9 carat radiant lab grown diamonds usually range from $428 to $7,771, with an average price of $892.In the last month, prices for these diamonds are down 1.8%.Compare 1,098 verified listings across 10 retailers tracked by CaratRadar.
1.9 Carat Radiant Lab Grown Diamond Market Overview
CaratRadar currently tracks 1,098 verified 1.9-carat radiant lab grown diamonds listed across 10 online retailers. Prices in this segment range from $428 to $7,771, with an average asking price of $892 and a median of $649.
The price spread of $7,343 (94.5% 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.
1,098 diamonds tracked in this segment
Price range: $428 to $7,771
Average price: $892
Median price: $649
Available across 10 retailers
Savings potential: up to 94.5%
Price Range Overview
As of Feb 28, 2026Real market range for this carat, shape, and diamond type.
1,098
$428
$892
$649
$7,771
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 61.1%1.86ct | Radiant | G | VS1 | Very Good
From $506
Compare at $1,302
IGISave 81.6%1.86ct | Radiant | F | VS1 | Ideal
From $641
Compare at $3,480
IGISave 72.6%1.86ct | Radiant | G | VS2 | Very Good
From $529
Compare at $1,930
IGISave 37.4%1.86ct | Radiant | E | VS1 | Ideal
From $743
Compare at $1,187
IGISave 66.7%1.86ct | Radiant | G | VS2 | Ideal
From $507
Compare at $1,520
IGISave 39.7%1.86ct | Radiant | F | VVS2 | Very Good
From $504
Compare at $835
IGISave 74.8%1.86ct | Radiant | E | VS2 | Ideal
From $717
Compare at $2,840
GIASave 29.9%1.86ct | Radiant | E | VVS2 | Ideal
From $3,360
Compare at $4,790
GIASave 80.7%1.86ct | Radiant | G | VVS2 | Very Good
From $913
Compare at $4,730
GIASave 83.2%1.86ct | Radiant | F | VS1 | Excellent
From $848
Compare at $5,050
GIASave 80.6%1.86ct | Radiant | H | VS1 | Very Good
From $836
Compare at $4,320
GIASave 82.7%1.86ct | Radiant | E | VS1 | Excellent
From $893
Compare at $5,160
GIASave 83.5%1.86ct | Radiant | E | VS1 | Excellent
From $913
Compare at $5,530
IGISave 79.8%1.86ct | Radiant | I | VS2 | Ideal
From $599
Compare at $2,970
IGISave 61.4%1.86ct | Radiant | H | VS1 | Ideal
From $830
Compare at $2,150
IGISave 62.5%1.86ct | Radiant | H | VS2 | Ideal
From $2,881
Compare at $7,688
IGISave 66.3%1.86ct | Radiant | G | VS2 | Ideal
From $2,990
Compare at $8,862
IGISave 71.4%1.86ct | Radiant | E | VS1 | Very Good
From $891
Compare at $3,110
IGISave 67.6%1.86ct | Radiant | G | VS1 | Ideal
From $589
Compare at $1,820
IGISave 79.4%1.86ct | Radiant | G | VS1 | Ideal
From $579
Compare at $2,810
IGISave 79.7%1.86ct | Radiant | E | VS1 | Very Good
From $518
Compare at $2,550
IGISave 72.6%1.86ct | Radiant | G | VS2 | Very Good
From $529
Compare at $1,930
IGISave 81.3%1.86ct | Radiant | D | VS1 | Ideal
From $722
Compare at $3,870
IGISave 81%1.86ct | Radiant | E | VS1 | Ideal
From $692
Compare at $3,640
IGISave 31.4%1.86ct | Radiant | E | VS1 | Very Good
From $743
Compare at $1,083
IGISave 31.4%1.86ct | Radiant | E | VS1 | Ideal
From $743
Compare at $1,083
IGISave 44.1%1.86ct | Radiant | D | VS1 | Ideal
From $1,235
Compare at $2,210
IGISave 81.6%1.86ct | Radiant | E | VVS1 | Very Good
From $832
Compare at $4,520
IGISave 31.4%1.86ct | Radiant | E | VS1 | Ideal
From $743
Compare at $1,083
IGISave 58.1%1.86ct | Radiant | E | VS1 | Ideal
From $1,302
Compare at $3,110
IGISave 72.9%1.86ct | Radiant | E | VS1 | Excellent
From $1,002
Compare at $3,690
IGISave 71.3%1.86ct | Radiant | E | VVS2 | Excellent
From $700
Compare at $2,440
IGISave 73.6%1.86ct | Radiant | F | VS1 | Very Good
From $735
Compare at $2,780
IGISave 65.7%1.86ct | Radiant | D | VS1 | Ideal
From $771
Compare at $2,246
IGISave 72.1%1.86ct | Radiant | D | IF | Excellent
From $1,792
Compare at $6,420
IGISave 75.5%1.86ct | Radiant | D | VS2 | Ideal
From $782
Compare at $3,190
IGISave 81.8%1.86ct | Radiant | D | VVS1 | Excellent
From $852
Compare at $4,670
IGISave 65.4%1.86ct | Radiant | E | VS1 | Ideal
From $575
Compare at $1,660
IGISave 66.3%1.86ct | Radiant | F | VS1 | Very Good
From $872
Compare at $2,590
IGISave 64.9%1.86ct | Radiant | E | VS1 | Very Good
From $522
Compare at $1,485
IGISave 52.3%1.86ct | Radiant | F | VS1 | Very Good
From $477
Compare at $1,000
IGISave 71.4%1.86ct | Radiant | D | VVS2 | Very Good
From $672
Compare at $2,350
GIASave 78.8%1.86ct | Radiant | E | VS1 | Ideal
From $1,066
Compare at $5,020
GIASave 83.2%1.86ct | Radiant | F | VS1 | Excellent
From $848
Compare at $5,050
GIASave 74.5%1.86ct | Radiant | F | VS1 | Excellent
From $1,018
Compare at $4,000
GIASave 27.4%1.86ct | Radiant | D | VVS1 | Ideal
From $4,760
Compare at $6,560
IGISave 60%1.86ct | Radiant | F | VS1 | Ideal
From $3,630
Compare at $9,065
IGISave 80.2%1.86ct | Radiant | G | VS1 | Ideal
From $714
Compare at $3,613
IGISave 76.1%1.86ct | Radiant | G | VVS2 | Excellent
From $613
Compare at $2,561
IGISave 60%1.86ct | Radiant | G | VVS2 | Very Good
From $714
Compare at $1,784
Entry pricing in this category starts around $428.
What to Know When Shopping for 1.9 Carat Radiant Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $7,343 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 $649 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 1,098 comparable stones in this segment. Prices start around $428 and go up to $7,771.
Based on the latest market data, the average asking price is about $892 with a median around $649.
The observed spread is roughly $7,343 across tracked listings, which is about 94.5% 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 $649, 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 10 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 $7,343 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.
Related Price Categories
Explore adjacent carat ranges and shapes to compare market shifts.
1.8 Carat Radiant Lab Grown Diamond Prices
2 Carat Radiant Lab Grown Diamond Prices
1.7 Carat Radiant Lab Grown Diamond Prices
2.1 Carat Radiant Lab Grown Diamond Prices
1.6 Carat Radiant Lab Grown Diamond Prices
2.2 Carat Radiant Lab Grown Diamond Prices
1.5 Carat Radiant Lab Grown Diamond Prices
1.9 Carat Round Lab Grown Diamond Prices
1.9 Carat Oval Lab Grown Diamond Prices
1.9 Carat Princess Lab Grown Diamond Prices
1.9 Carat Emerald Lab Grown Diamond Prices
1.9 Carat Pear Lab Grown Diamond Prices
Tracking Lab Grown inventory for 1.9 carat Radiant diamonds.