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Cushion|Lab Grown|IGI

5.51ct D VS1 Cushion Lab Grown Diamond

EX • D/VS1 • IGI LG722522546

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG722522546

Diamond specifications and retailer prices

From $1,176 USD
As of October 31, 2026
Save $5,724 USD (83%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $6,900 USD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 5.51ct lab-grown cushion diamond

This 5.51ct lab-grown cushion sits in the over five carat band, graded D colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG722522546 or 722522546. Listed at 17 retailers as of October 30, 2026, with prices from $1,176 to $6,900, a $5,724 spread on the same certified stone. Brilliant Earth lists it at $6,900. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

5.51
Carat
D
Color
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.6°
Pavilion angle39.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG722522546
Dimensions10.31 × 10.18 × 6.80 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.31 mm10.18 mm5.51 ctD / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG722522546
Side View
Table 61.0%Crown 36.6°Girdle: MED-STKPavilion 39.1°Culet: NoneDepth 66.8%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 31
Current: $6,900 USD|Low: $1,176 USD|High: $13,410 USD|Avg: $3,454 USD|-48.5%
Brilliant Earth
Retailer 2
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Retailer 5
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Retailer 7
Retailer 8
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Retailer 11
Retailer 12
Retailer 13
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Retailer 18
October 31, 2026
Retailer 18$1,176 USD
Retailer 6$1,219 USD
Retailer 16$1,327 USD
Retailer 17$1,360 USD
Retailer 7$1,653 USD
Retailer 2$1,765 USD
Retailer 3$1,944 USD
Retailer 11$2,014 USD
Retailer 14$2,469 USD
Retailer 12$2,477 USD
Retailer 10$3,011 USD
Retailer 8$3,368 USD
Retailer 5$3,727 USD
Retailer 4$3,780 USD
Retailer 13$4,140 USD
Retailer 9$4,256 USD
Retailer 15$5,850 USD
Brilliant Earth$6,900 USD

40 data points across 18 retailers

17 retailers$1,176 USD to $6,900 USD

A
Cheapest Retailer
-
$1,176 USD
Final sale: no returns
Retailer 2
-
$1,219 USD
View
Price last confirmed 20 days ago
Retailer 3
-
$1,327 USD
£1,045 GBP
View
Price last confirmed 14 days ago
A
Retailer 4
-
$1,360 USD
View
A
Retailer 5
-
$1,653 USD
View
A
Retailer 6
-
$1,765 USD
£1,390 GBP
View
A
Retailer 7
-
$1,944 USD
View
A
Retailer 8
-
$2,014 USD
€1,918 EUR
View
Retailer 9
-
$2,469 USD
A$3,798 AUD
View
Price last confirmed 9 days ago
A
Retailer 10
-
$2,477 USD
ZAR 40,013 ZAR
View
B+
Retailer 11
-
$3,011 USD
View
B+
Retailer 12
-
$3,727 USD
View
B+
Retailer 13
-
$3,780 USD
View
B+
Retailer 14
-
$4,140 USD
£3,260 GBP
View
B+
Retailer 15
-
$4,256 USD
View
Retailer 16
-
$5,850 USD
View
Price last confirmed 10 days ago
Most Expensive
B
Brilliant Earth
15673761A · Oct 30
$6,900 USD
View
16 more retailers have this diamond
Prices start from $1,176 USDSave up to $5,724 USD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
5.51ct Cushion
$1,176 USD