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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 HK$12,985 HKD
$1,655 USD
As of October 31, 2026
Save HK$51,821 HKD (80%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: HK$64,805 HKD at Brilliant Earth · As of October 31, 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 31, 2026, with prices from HK$12,985 to HK$64,805, a HK$51,821 spread on the same certified stone. Brilliant Earth lists it at HK$64,805. 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
Colour
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

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: HK$64,805 HKD|Low: HK$11,510 HKD|High: HK$102,308 HKD|Avg: HK$29,181 HKD|-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
November 1, 2026
Retailer 11HK$11,933 HKD
Retailer 15HK$12,985 HKD
Retailer 5HK$13,298 HKD
Retailer 6HK$13,758 HKD
Retailer 4HK$14,491 HKD
Retailer 2HK$16,818 HKD
Retailer 19HK$17,064 HKD
Retailer 14HK$19,022 HKD
Retailer 16HK$20,258 HKD
Retailer 13HK$24,178 HKD
Retailer 17HK$24,239 HKD
Retailer 7HK$24,298 HKD
Retailer 8HK$28,816 HKD
Retailer 20HK$32,803 HKD
Retailer 9HK$35,447 HKD
Retailer 18HK$38,541 HKD
Retailer 10HK$39,927 HKD
Retailer 12HK$41,897 HKD
Retailer 3HK$47,231 HKD
Brilliant EarthHK$64,805 HKD

31 data points across 20 retailers

20 retailersHK$12,985 HKD to HK$64,805 HKD

Retailer 1
-
HK$11,933 HKD
$1,521 USD
Price last confirmed 19 days ago
A
Retailer 2
-
HK$12,985 HKD
$1,655 USD
View
Final sale: no returns
A
Retailer 3
-
HK$13,298 HKD
$1,695 USD
View
A
Retailer 4
-
HK$13,758 HKD
View
A
Retailer 5
-
HK$14,491 HKD
$1,847 USD
View
A
Retailer 6
-
HK$16,818 HKD
£1,688 GBP
View
A
Retailer 7
-
HK$17,064 HKD
$2,175 USD
View
A
Retailer 8
-
HK$19,022 HKD
€2,309 EUR
View
A
Retailer 9
-
HK$20,258 HKD
$2,582 USD
View
B+
Retailer 10
-
HK$24,178 HKD
A$4,741 AUD
View
B+
Retailer 11
-
HK$24,239 HKD
ZAR 49,911 ZAR
View
B+
Retailer 12
-
HK$24,298 HKD
$3,097 USD
View
B+
Retailer 13
-
HK$28,816 HKD
£2,892 GBP
View
B+
Retailer 14
-
HK$32,803 HKD
$4,181 USD
View
B+
Retailer 15
-
HK$35,447 HKD
$4,518 USD
View
B+
Retailer 16
-
HK$38,541 HKD
£3,868 GBP
View
B
Retailer 17
-
HK$39,927 HKD
SGD 6,877 SGD
View
B
Retailer 18
-
HK$41,897 HKD
$5,340 USD
View
Retailer 19
-
HK$47,231 HKD
$6,020 USD
View
Price last confirmed 11 days ago
Most Expensive
B
Brilliant Earth
18586634A · Oct 31
HK$64,805 HKD
$8,260 USD
View
19 more retailers have this diamond
Prices start from HK$12,985 HKDSave up to HK$51,821 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
5.51ct Cushion
HK$12,985 HKD