0.9 Carat Radiant Lab Grown Diamond Prices Comparison
As of May 2026, 0.9 carat radiant lab grown diamonds usually range from $107 to $1,870, with an average price of $612.In the last month, prices for these diamonds are down 2.3%.Compare 1,085 verified listings across 7 retailers tracked by CaratRadar.
0.9 Carat Radiant Lab Grown Diamond Market Overview
CaratRadar currently tracks 1,085 verified 0.9-carat radiant lab grown diamonds listed across 7 online retailers. Prices in this segment range from $107 to $1,870, with an average asking price of $612 and a median of $521.
The price spread of $1,763 (94.3% 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.
1,085 diamonds tracked in this segment
Price range: $107 to $1,870
Average price: $612
Median price: $521
Available across 7 retailers
Savings potential: up to 94.3%
Price Range Overview
As of May 30, 2026Real market range for this carat, shape, and diamond type.
1,085
$107
$612
$521
$1,870
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 61.3%IGI | 0.91ct | Radiant | G | SI1 | Very Good
From $134
Compare at $346
Save 78.4%IGI | 0.92ct | Radiant | E | VS2 | Excellent
From $138
Compare at $640
Save 66.6%IGI | 0.95ct | Radiant | F | VS2 | Excellent
From $143
Compare at $428
Save 78.5%IGI | 0.93ct | Radiant | G | VS1 | Excellent
From $144
Compare at $670
Save 78.5%IGI | 0.96ct | Radiant | E | VS2 | Very Good
From $144
Compare at $670
Save 77.5%IGI | 0.97ct | Radiant | G | VS2 | Very Good
From $144
Compare at $640
Save 80%IGI | 0.93ct | Radiant | E | VS1 | Very Good
From $146
Compare at $730
Save 70%IGI | 0.94ct | Radiant | F | VS1 | Ideal
From $148
Compare at $493
Save 78.4%IGI | 0.95ct | Radiant | F | VS1 | Ideal
From $149
Compare at $690
Save 79.9%IGI | 0.91ct | Radiant | E | VS1 | Very Good
From $149
Compare at $740
Save 79.3%IGI | 0.92ct | Radiant | D | VS2 | Very Good
From $149
Compare at $720
Save 68.6%IGI | 0.93ct | Radiant | G | VVS2 | Ideal
From $151
Compare at $481
Save 79.3%IGI | 0.92ct | Radiant | D | VS1 | Ideal
From $151
Compare at $730
Save 63.9%IGI | 0.94ct | Radiant | E | VS1 | Very Good
From $152
Compare at $421
Save 63%IGI | 0.92ct | Radiant | E | VS2 | Ideal
From $153
Compare at $413
Save 68.7%IGI | 0.95ct | Radiant | E | VS1 | Excellent
From $153
Compare at $489
Save 79.6%IGI | 0.96ct | Radiant | G | VS1 | Ideal
From $155
Compare at $760
Save 68.6%IGI | 0.96ct | Radiant | D | VS1 | Ideal
From $155
Compare at $493
Save 68.6%IGI | 0.96ct | Radiant | D | VS1 | Ideal
From $155
Compare at $493
Save 68.6%IGI | 0.96ct | Radiant | D | VS1 | Ideal
From $155
Compare at $493
Save 67.3%IGI | 0.92ct | Radiant | F | SI1 | Ideal
From $156
Compare at $477
Save 68.4%IGI | 0.97ct | Radiant | D | VS1 | Ideal
From $157
Compare at $497
Save 68.4%IGI | 0.97ct | Radiant | D | VS1 | Ideal
From $157
Compare at $497
Save 68.4%IGI | 0.97ct | Radiant | D | VS1 | Ideal
From $157
Compare at $497
Save 68.4%IGI | 0.97ct | Radiant | D | VS1 | Ideal
From $157
Compare at $497
Save 68.4%IGI | 0.97ct | Radiant | D | VS1 | Ideal
From $157
Compare at $497
Save 68.4%IGI | 0.97ct | Radiant | D | VS1 | Ideal
From $157
Compare at $497
Save 68.4%IGI | 0.97ct | Radiant | D | VS1 | Ideal
From $157
Compare at $497
Save 68.4%IGI | 0.97ct | Radiant | D | VS1 | Ideal
From $157
Compare at $497
Save 68.4%IGI | 0.97ct | Radiant | D | VS1 | Ideal
From $157
Compare at $497
Save 68.4%IGI | 0.97ct | Radiant | D | VS1 | Ideal
From $157
Compare at $497
Save 68.4%IGI | 0.97ct | Radiant | D | VS1 | Ideal
From $157
Compare at $497
Save 78.5%IGI | 0.97ct | Radiant | F | VVS2 | Ideal
From $157
Compare at $730
Save 77.1%IGI | 0.92ct | Radiant | F | VS2 | Excellent
From $158
Compare at $690
Save 68.3%IGI | 0.96ct | Radiant | D | VS1 | Ideal
From $158
Compare at $499
Save 68.3%IGI | 0.96ct | Radiant | D | VS1 | Ideal
From $158
Compare at $499
Save 68.3%IGI | 0.96ct | Radiant | D | VS1 | Ideal
From $158
Compare at $499
Save 68.3%IGI | 0.96ct | Radiant | D | VS1 | Ideal
From $158
Compare at $499
Save 68.3%IGI | 0.96ct | Radiant | D | VS1 | Ideal
From $158
Compare at $499
Save 77.1%IGI | 0.91ct | Radiant | F | VVS2 | Ideal
From $158
Compare at $690
Save 66.4%IGI | 0.96ct | Radiant | E | VS1 | Excellent
From $159
Compare at $473
Save 68.4%IGI | 0.97ct | Radiant | D | VS1 | Ideal
From $159
Compare at $503
Save 68.4%IGI | 0.97ct | Radiant | D | VS1 | Ideal
From $159
Compare at $503
Save 68.4%IGI | 0.97ct | Radiant | D | VS1 | Ideal
From $159
Compare at $503
Save 68.4%IGI | 0.97ct | Radiant | D | VS1 | Ideal
From $159
Compare at $503
Save 68.4%IGI | 0.97ct | Radiant | D | VS1 | Ideal
From $159
Compare at $503
IGI | 0.93ct | Radiant | F | VS2 | Excellent
From $159
Compare at $630
Save 68.4%IGI | 0.97ct | Radiant | D | VS1 | Ideal
From $159
Compare at $503
Save 68.4%IGI | 0.97ct | Radiant | D | VS1 | Ideal
From $159
Compare at $503
Save 66.5%IGI | 0.97ct | Radiant | D | VS1 | Ideal
From $159
Compare at $474
Entry pricing in this category starts around $107.
What to Know When Shopping for 0.9 Carat Radiant Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $1,763 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 $521 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 1,085 comparable stones in this segment. Prices start around $107 and go up to $1,870.
Based on the latest market data, the average asking price is about $612 with a median around $521.
The observed spread is roughly $1,763 across tracked listings, which is about 94.3% 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 $612. The median price is $521, 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 7 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 $1,763 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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