1.9 Carat Radiant Lab Grown Diamond Prices Comparison
As of May 2026, 1.9 carat radiant lab grown diamonds usually range from $253 to $6,181, with an average price of $1,313.In the last month, prices for these diamonds are down 3.3%.Compare 480 verified listings across 9 retailers tracked by CaratRadar.
1.9 Carat Radiant Lab Grown Diamond Market Overview
CaratRadar currently tracks 480 verified 1.9-carat radiant lab grown diamonds listed across 9 online retailers. Prices in this segment range from $253 to $6,181, with an average asking price of $1,313 and a median of $1,018.
The price spread of $5,928 (95.9% 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.
480 diamonds tracked in this segment
Price range: $253 to $6,181
Average price: $1,313
Median price: $1,018
Available across 9 retailers
Savings potential: up to 95.9%
Price Range Overview
As of May 30, 2026Real market range for this carat, shape, and diamond type.
480
$253
$1,313
$1,018
$6,181
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 66.7%IGI | 1.96ct | Radiant | D | VS1 | Very Good
From $280
Compare at $841
Save 73.2%IGI | 1.91ct | Radiant | I | VS1 | Ideal
From $282
Compare at $1,054
Save 66.6%IGI | 1.91ct | Radiant | D | VVS2 | Very Good
From $301
Compare at $902
Save 66.2%IGI | 1.93ct | Radiant | E | VS2 | Excellent
From $335
Compare at $991
Save 79.4%IGI | 1.99ct | Radiant | F | SI1 | Ideal
From $346
Compare at $1,680
Save 69.7%IGI | 1.91ct | Radiant | D | VVS2 | Very Good
From $351
Compare at $1,158
Save 62.9%IGI | 1.92ct | Radiant | F | VS2 | Very Good
From $351
Compare at $947
Save 66.8%IGI | 1.9ct | Radiant | F | VVS2 | Ideal
From $354
Compare at $1,066
Save 79.8%IGI | 1.97ct | Radiant | F | SI1 | Ideal
From $354
Compare at $1,750
Save 69.7%IGI | 1.92ct | Radiant | D | VVS2 | Very Good
From $354
Compare at $1,169
Save 74.4%IGI | 1.9ct | Radiant | F | VS1 | Ideal
From $354
Compare at $1,385
Save 70%IGI | 1.93ct | Radiant | D | VVS2 | Very Good
From $355
Compare at $1,182
Save 70.1%IGI | 1.94ct | Radiant | D | VVS2 | Very Good
From $357
Compare at $1,193
IGI | 1.94ct | Radiant | D | VVS2 | Ideal
From $357
Compare at $1,193
Save 70.2%IGI | 1.95ct | Radiant | D | VVS2 | Very Good
From $359
Compare at $1,204
Save 64.9%IGI | 1.91ct | Radiant | D | VS1 | Very Good
From $360
Compare at $1,025
Save 70.3%IGI | 1.96ct | Radiant | D | VVS2 | Very Good
From $361
Compare at $1,216
Save 66.9%IGI | 1.92ct | Radiant | E | VVS2 | Very Good
From $362
Compare at $1,094
Save 73.2%IGI | 1.98ct | Radiant | D | VVS2 | Excellent
From $364
Compare at $1,358
Save 70.6%IGI | 1.98ct | Radiant | D | VVS2 | Very Good
From $364
Compare at $1,240
Save 65.6%IGI | 1.93ct | Radiant | E | VS1 | Very Good
From $365
Compare at $1,061
Save 70.8%IGI | 1.99ct | Radiant | D | VVS2 | Very Good
From $366
Compare at $1,252
Save 70.8%IGI | 1.99ct | Radiant | D | VVS2 | Very Good
From $366
Compare at $1,252
Save 63.2%IGI | 1.9ct | Radiant | D | VS2 | Very Good
From $367
Compare at $998
Save 62.4%IGI | 1.9ct | Radiant | F | VS1 | Ideal
From $374
Compare at $995
Save 21.9%IGI | 1.92ct | Radiant | E | VS1 | Ideal
From $377
Compare at $483
Save 62.2%IGI | 1.9ct | Radiant | F | VS1 | Very Good
From $380
Compare at $1,004
Save 59.2%IGI | 1.96ct | Radiant | G | VS1 | Excellent
From $381
Compare at $934
Save 11.8%IGI | 1.9ct | Radiant | I | VVS2 | Ideal
From $389
Compare at $441
Save 68.1%IGI | 1.94ct | Radiant | D | VVS2 | Very Good
From $389
Compare at $1,220
Save 61.6%IGI | 1.93ct | Radiant | E | VS1 | Ideal
From $391
Compare at $1,018
Save 56.4%IGI | 1.93ct | Radiant | G | VS2 | Ideal
From $395
Compare at $906
Save 79.7%IGI | 1.93ct | Radiant | G | VS1 | Ideal
From $395
Compare at $1,950
Save 75.3%IGI | 1.93ct | Radiant | E | VS1 | Very Good
From $395
Compare at $1,600
Save 11.9%IGI | 1.93ct | Radiant | E | VS1 | Good
From $399
Compare at $453
Save 66.4%IGI | 1.96ct | Radiant | G | VS1 | Very Good
From $400
Compare at $1,191
Save 72.6%IGI | 1.96ct | Radiant | D | VVS2 | Ideal
From $400
Compare at $1,459
Save 66.5%IGI | 1.92ct | Radiant | D | VS1 | Ideal
From $401
Compare at $1,198
Save 49.4%IGI | 1.91ct | Radiant | F | VVS2 | Excellent
From $402
Compare at $794
Save 73.1%IGI | 1.92ct | Radiant | E | VVS2 | Excellent
From $405
Compare at $1,505
Save 53.6%IGI | 1.91ct | Radiant | G | VS1 | Very Good
From $407
Compare at $878
Save 79.4%IGI | 1.9ct | Radiant | F | VS1 | Very Good
From $410
Compare at $1,990
Save 71.9%IGI | 1.9ct | Radiant | FANCY | VS1 | Excellent
From $410
Compare at $1,460
Save 61.1%IGI | 1.93ct | Radiant | F | VVS2 | Ideal
From $411
Compare at $1,057
Save 73.3%IGI | 1.94ct | Radiant | D | VVS2 | Ideal
From $413
Compare at $1,545
Save 79.6%IGI | 1.95ct | Radiant | F | VS1 | Very Good
From $421
Compare at $2,060
Save 11.3%IGI | 1.92ct | Radiant | D | VS1 | Very Good
From $423
Compare at $477
Save 78.7%IGI | 1.91ct | Radiant | F | VVS2 | Excellent
From $426
Compare at $2,000
Save 78.2%IGI | 1.99ct | Radiant | D | VS2 | Ideal
From $430
Compare at $1,970
Save 71.9%IGI | 1.97ct | Radiant | FANCY | VS2 | Very Good
From $434
Compare at $1,545
Entry pricing in this category starts around $253.
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 $5,928 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 $1,018 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 480 comparable stones in this segment. Prices start around $253 and go up to $6,181.
Based on the latest market data, the average asking price is about $1,313 with a median around $1,018.
The observed spread is roughly $5,928 across tracked listings, which is about 95.9% from highest to lowest offer in this bucket.
We refresh pricing data daily so these pages stay current with market changes.
Based on completed market data, the fair market benchmark is $1,313. The median price is $1,018, so offers between the median and fair benchmark can be reasonable, while reputable listings below the median may be especially competitive.
We currently track this stone category across 9 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 $5,928 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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