Cushion|Lab Grown|IGI

5.21ct D VS1 Cushion Lab Grown Diamond

EX • D/VS1 • IGI LG837604806

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG837604806

Diamond specifications and retailer prices

From $1,636 USD
£1,288 GBP
As of October 30, 2026
Save $3,230 USD (66%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $12,670 USD at Brilliant Earth · As of September 28, 2026
View at Brilliant Earth

About this 5.21ct lab-grown cushion diamond

This 5.21ct 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 LG837604806 or 837604806. Listed at 11 retailers as of October 29, 2026, with a 197% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

5.21
Carat
D
Color
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.4°
Pavilion angle35.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG837604806
Dimensions12.15 × 8.89 × 5.98 mm
L/W Ratio1.37
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
12.15 mm8.89 mm5.21 ctD / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG837604806
Side View
Table 59.0%Crown 36.4°Girdle: MED-THKPavilion 35.1°Culet: NoneDepth 67.3%

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 30
Current: $4,067 USD|Low: $1,636 USD|High: $4,867 USD|Avg: $3,091 USD|-8.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 30, 2026
Retailer 4$1,636 USD
Retailer 11$1,669 USD
Retailer 3$1,711 USD
Retailer 2$2,633 USD
Retailer 5$2,793 USD
Retailer 6$3,061 USD
Retailer 10$3,389 USD
Retailer 9$4,023 USD
Retailer 1$4,067 USD
Retailer 8$4,323 USD
Retailer 7$4,867 USD

30 data points across 11 retailers

11 retailers$1,636 USD to $4,867 USD

A
Cheapest Retailer
-
$1,636 USD
£1,288 GBP
Retailer 2
-
$1,669 USD
View
Price last confirmed 19 days ago
Retailer 3
-
$2,633 USD
View
Price last confirmed 12 days ago
B+
Retailer 4
-
$2,793 USD
View
B+
Retailer 5
-
$3,061 USD
ZAR 49,453 ZAR
View
Retailer 6
-
$3,389 USD
A$5,214 AUD
View
Price last confirmed 8 days ago
B+
Retailer 7
-
$4,023 USD
£3,168 GBP
View
B+
Retailer 8
-
$4,067 USD
View
B+
Retailer 9
-
$4,323 USD
View
B
Retailer 10
-
$4,867 USD
£3,832 GBP
View
Most Expensive
Brilliant Earth
21386786A · Sep 28
$12,670 USD
View
Price last confirmed 32 days ago
10 more retailers have this diamond
Prices start from $1,636 USDSave up to $3,230 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
5.21ct Cushion
$1,636 USD