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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 HK$12,838 HKD
£1,288 GBP
As of October 30, 2026
Save HK$25,345 HKD (66%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: HK$99,405 HKD 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
Colour
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: HK$31,910 HKD|Low: HK$12,838 HKD|High: HK$38,182 HKD|Avg: HK$24,251 HKD|-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 4HK$12,838 HKD
Retailer 11HK$13,094 HKD
Retailer 3HK$13,424 HKD
Retailer 2HK$20,658 HKD
Retailer 5HK$21,913 HKD
Retailer 6HK$24,017 HKD
Retailer 10HK$26,590 HKD
Retailer 9HK$31,566 HKD
Retailer 1HK$31,910 HKD
Retailer 8HK$33,917 HKD
Retailer 7HK$38,182 HKD

30 data points across 11 retailers

11 retailersHK$12,838 HKD to HK$38,182 HKD

A
Cheapest Retailer
-
HK$12,838 HKD
£1,288 GBP
Retailer 2
-
HK$13,094 HKD
$1,669 USD
View
Price last confirmed 20 days ago
Retailer 3
-
HK$20,658 HKD
$2,633 USD
View
Price last confirmed 13 days ago
B+
Retailer 4
-
HK$21,913 HKD
$2,793 USD
View
B+
Retailer 5
-
HK$24,017 HKD
ZAR 49,453 ZAR
View
Retailer 6
-
HK$26,590 HKD
A$5,214 AUD
View
Price last confirmed 9 days ago
B+
Retailer 7
-
HK$31,566 HKD
£3,168 GBP
View
B+
Retailer 8
-
HK$31,910 HKD
$4,067 USD
View
B+
Retailer 9
-
HK$33,917 HKD
$4,323 USD
View
B
Retailer 10
-
HK$38,182 HKD
£3,832 GBP
View
Most Expensive
Brilliant Earth
21386786A · Sep 28
HK$99,405 HKD
$12,670 USD
View
Price last confirmed 33 days ago
10 more retailers have this diamond
Prices start from HK$12,838 HKDSave up to HK$25,345 HKD

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
HK$12,838 HKD