CaratHunter
Plans
Cushion|Lab Grown|IGI

5.51ct D VS1 Cushion Lab Grown Diamond

EX • D/VS1 • IGI LG764603054

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG764603054

Diamond specifications and retailer prices

From $1,655 USD
As of October 31, 2026
Save $6,605 USD (80%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $8,260 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 LG764603054 or 764603054. Listed at 20 retailers as of October 30, 2026, with prices from $1,655 to $8,260, a $6,605 spread on the same certified stone. Brilliant Earth lists it at $8,260. 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 angle40.3°
Pavilion angle29.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG764603054
Dimensions8.84 × 8.84 × 6.01 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.84 mm8.84 mm5.51 ctD / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG764603054
Side View
Table 63.0%Crown 40.3°Girdle: MED-STKPavilion 29.7°Culet: NoneDepth 68.0%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: $8,260 USD|Low: $1,467 USD|High: $13,040 USD|Avg: $3,686 USD|-36.6%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
October 31, 2026
Retailer 11$1,521 USD
Retailer 13$1,655 USD
Retailer 5$1,695 USD
Retailer 6$1,754 USD
Retailer 4$1,847 USD
Retailer 14$2,144 USD
Retailer 18$2,175 USD
Retailer 2$2,424 USD
Retailer 15$2,582 USD
Retailer 20$3,079 USD
Retailer 16$3,089 USD
Retailer 7$3,097 USD
Retailer 8$3,673 USD
Retailer 19$4,181 USD
Retailer 9$4,518 USD
Retailer 17$4,912 USD
Retailer 10$5,089 USD
Retailer 12$5,340 USD
Retailer 3$6,020 USD
Brilliant Earth$8,260 USD

31 data points across 20 retailers

20 retailers$1,655 USD to $8,260 USD

Retailer 1
-
$1,521 USD
Price last confirmed 18 days ago
A
Retailer 2
-
$1,655 USD
View
Final sale: no returns
A
Retailer 3
-
$1,695 USD
View
A
Retailer 4
-
$1,754 USD
HK$13,700 HKD
View
A
Retailer 5
-
$1,847 USD
View
A
Retailer 6
-
$2,144 USD
£1,688 GBP
View
A
Retailer 7
-
$2,175 USD
View
A
Retailer 8
-
$2,424 USD
€2,309 EUR
View
A
Retailer 9
-
$2,582 USD
View
Retailer 10
-
$3,079 USD
A$4,737 AUD
View
Price last confirmed 9 days ago
B+
Retailer 11
-
$3,089 USD
ZAR 49,911 ZAR
View
B+
Retailer 12
-
$3,097 USD
View
B+
Retailer 13
-
$3,673 USD
£2,892 GBP
View
B+
Retailer 14
-
$4,181 USD
View
B+
Retailer 15
-
$4,518 USD
View
B+
Retailer 16
-
$4,912 USD
£3,868 GBP
View
B
Retailer 17
-
$5,089 USD
SGD 6,877 SGD
View
B
Retailer 18
-
$5,340 USD
View
Retailer 19
-
$6,020 USD
View
Price last confirmed 10 days ago
Most Expensive
B
Brilliant Earth
18586634A · Oct 30
$8,260 USD
View
19 more retailers have this diamond
Prices start from $1,655 USDSave up to $6,605 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
$1,655 USD