5.1 Carat Cushion Lab Grown Diamond Prices Comparison
As of April 2026, 5.1 carat cushion lab grown diamonds usually range from $585 to $33,734, with an average price of $4,214.In the last month, prices for these diamonds are up 0.3%.Compare 452 verified listings across 10 retailers tracked by CaratRadar.
5.1 Carat Cushion Lab Grown Diamond Market Overview
CaratRadar currently tracks 452 verified 5.1-carat cushion lab grown diamonds listed across 10 online retailers. Prices in this segment range from $585 to $33,734, with an average asking price of $4,214 and a median of $2,988.
The price spread of $33,149 (98.3% 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.
452 diamonds tracked in this segment
Price range: $585 to $33,734
Average price: $4,214
Median price: $2,988
Available across 10 retailers
Savings potential: up to 98.3%
Price Range Overview
As of Apr 14, 2026Real market range for this carat, shape, and diamond type.
452
$585
$4,214
$2,988
$33,734
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 71.8%GCAL | 5.1ct | Cushion | E | VVS2 | Excellent
From $2,522
Compare at $8,950
Save 67.2%GIA | 5.1ct | Cushion | E | VS2 | Excellent
From $7,030
Compare at $21,420
Save 16.4%GIA | 5.1ct | Cushion | D | FL | Ideal
From $43,370
Compare at $51,888
Save 72.2%GIA | 5.1ct | Cushion | D | VVS1 | Excellent
From $10,860
Compare at $39,090
Save 14.7%GIA | 5.1ct | Cushion | D | IF | Ideal
From $25,221
Compare at $29,570
Save 63.4%GIA | 5.1ct | Cushion | D | VVS1 | Excellent
From $10,860
Compare at $29,680
Save 20.5%GIA | 5.1ct | Cushion | D | FL | Ideal
From $44,720
Compare at $56,264
Save 71.5%GIA | 5.1ct | Cushion | H | VVS2 | Excellent
From $4,090
Compare at $14,360
Save 72.9%GIA | 5.1ct | Cushion | F | VS1 | Ideal
From $4,900
Compare at $18,090
Save 72.9%GIA | 5.1ct | Cushion | G | VVS2 | Excellent
From $5,788
Compare at $21,370
Save 63.4%GIA | 5.1ct | Cushion | D | VVS1 | Excellent
From $10,860
Compare at $29,680
Save 62.6%GIA | 5.1ct | Cushion | D | VVS2 | Excellent
From $9,206
Compare at $24,606
IGI | 5.1ct | Cushion | I | VS1 | Ideal
From $1,777
Compare at $1,780
Save 62.8%IGI | 5.1ct | Cushion | I | VS1 | Ideal
From $2,550
Compare at $6,860
Save 69.8%IGI | 5.1ct | Cushion | G | VS2 | Ideal
From $1,453
Compare at $4,810
Save 27.4%IGI | 5.1ct | Cushion | G | VS1 | Ideal
From $1,529
Compare at $2,105
Save 27.4%IGI | 5.1ct | Cushion | G | VS1 | Ideal
From $1,529
Compare at $2,105
Save 70.7%IGI | 5.1ct | Cushion | G | VS1 | Ideal
From $1,529
Compare at $5,220
IGI | 5.1ct | Cushion | H | VS1 | Ideal
From $1,999
Compare at $2,000
IGI | 5.1ct | Cushion | H | VS1 | Ideal
From $1,999
Compare at $2,000
Save 77.1%IGI | 5.1ct | Cushion | G | VS1 | Excellent
From $2,097
Compare at $9,170
Save 71.8%IGI | 5.1ct | Cushion | G | VS2 | Ideal
From $1,453
Compare at $5,150
Save 83%IGI | 5.1ct | Cushion | G | VS1 | Ideal
From $1,529
Compare at $9,000
Save 27.4%IGI | 5.1ct | Cushion | G | VS1 | Ideal
From $1,529
Compare at $2,105
Save 77.2%IGI | 5.1ct | Cushion | G | VS1 | Ideal
From $1,529
Compare at $6,700
Save 62.8%IGI | 5.1ct | Cushion | H | VS2 | Ideal
From $2,503
Compare at $6,730
Save 27.4%IGI | 5.1ct | Cushion | G | VS1 | Ideal
From $1,529
Compare at $2,105
Save 27.4%IGI | 5.1ct | Cushion | G | VS1 | Ideal
From $1,529
Compare at $2,105
Save 84.1%IGI | 5.1ct | Cushion | F | SI1 | Ideal
From $1,294
Compare at $8,150
Save 41.9%IGI | 5.1ct | Cushion | F | VS2 | Ideal
From $1,529
Compare at $2,631
IGI | 5.1ct | Cushion | H | VVS2 | Ideal
From $2,097
Compare at $2,100
Save 54.6%IGI | 5.1ct | Cushion | F | VS2 | Very Good
From $2,525
Compare at $5,560
Save 54.1%IGI | 5.1ct | Cushion | G | VS1 | Ideal
From $2,550
Compare at $5,550
Save 71.5%IGI | 5.1ct | Cushion | F | VS2 | Ideal
From $2,462
Compare at $8,630
Save 64.5%IGI | 5.1ct | Cushion | D | IF | Ideal
From $18,058
Compare at $50,830
IGI | 5.1ct | Cushion | E | VVS1 | Ideal
From $3,747
Compare at $3,750
Save 18.9%IGI | 5.1ct | Cushion | E | VS1 | Ideal
From $5,940
Compare at $7,320
Save 74.7%IGI | 5.1ct | Cushion | D | VVS1 | Ideal
From $10,565
Compare at $41,780
Save 65.5%IGI | 5.1ct | Cushion | G | VS1 | Good
From $2,375
Compare at $6,886
Save 65.8%IGI | 5.1ct | Cushion | E | VS1 | Ideal
From $2,678
Compare at $7,840
Save 85.4%IGI | 5.1ct | Cushion | E | VVS2 | Excellent
From $1,831
Compare at $12,580
Save 84%IGI | 5.1ct | Cushion | E | VVS2 | Excellent
From $1,831
Compare at $11,440
Save 76.1%IGI | 5.1ct | Cushion | E | VS2 | Ideal
From $1,737
Compare at $7,270
Save 76.5%IGI | 5.1ct | Cushion | E | VVS2 | Ideal
From $1,681
Compare at $7,160
Save 58.7%IGI | 5.1ct | Cushion | D | VVS2 | Ideal
From $2,547
Compare at $6,170
Save 76.2%IGI | 5.1ct | Cushion | E | VS2 | Ideal
From $1,483
Compare at $6,230
Save 83.9%IGI | 5.1ct | Cushion | E | VS2 | Ideal
From $935
Compare at $5,800
Save 81.7%IGI | 5.1ct | Cushion | D | VS2 | Ideal
From $2,031
Compare at $11,120
Save 81.6%IGI | 5.1ct | Cushion | E | VS1 | Very Good
From $1,726
Compare at $9,390
Save 84.6%IGI | 5.1ct | Cushion | E | VVS2 | Ideal
From $1,160
Compare at $7,530
Entry pricing in this category starts around $585.
What to Know When Shopping for 5.1 Carat Cushion Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $33,149 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 $2,988 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.
- Cushion cuts come in standard and modified brilliant varieties. Modified brilliants tend to show more fire, while standard cushions have broader facets.
Frequently Asked Questions
We currently track 452 comparable stones in this segment. Prices start around $585 and go up to $33,734.
Based on the latest market data, the average asking price is about $4,214 with a median around $2,988.
The observed spread is roughly $33,149 across tracked listings, which is about 98.3% 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 $2,988, 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 $33,149 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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