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Cushion|Lab Grown|IGI

5.51ct D VS1 Cushion Lab Grown Diamond

EX • D/VS1 • IGI LG632406758

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG632406758

Diamond specifications and retailer prices

From HK$21,631 HKD
$2,757 USD
As of October 31, 2026
Save HK$87,446 HKD (80%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: HK$109,076 HKD at Taylor and Hart · As of October 31, 2026
View at Taylor and Hart

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 LG632406758 or 632406758. Listed at 18 retailers as of October 31, 2026, with prices from HK$21,631 to HK$109,076, a HK$87,446 spread on the same certified stone. Taylor and Hart lists it at HK$109,076. 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 angle38.9°
Pavilion angle36.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG632406758
Dimensions9.71 × 9.71 × 6.50 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
9.71 mm9.71 mm5.51 ctD / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG632406758
Side View
Table 63.0%Crown 38.9°Girdle: MED-THKPavilion 36.1°Culet: NoneDepth 66.9%

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: HK$41,454 HKD|Low: HK$27,138 HKD|High: HK$166,878 HKD|Avg: HK$57,106 HKD|-0.2%
Retailer 1
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
November 1, 2026
Retailer 7HK$27,138 HKD
Retailer 2HK$27,162 HKD
Retailer 15HK$28,135 HKD
Retailer 16HK$29,382 HKD
Retailer 13HK$33,803 HKD
Retailer 6HK$39,762 HKD
Retailer 1HK$41,454 HKD
Retailer 8HK$47,469 HKD
Retailer 9HK$49,197 HKD
Retailer 10HK$63,090 HKD
Retailer 12HK$63,476 HKD
Retailer 4HK$70,517 HKD
Retailer 3HK$77,464 HKD
Retailer 11HK$78,826 HKD
Retailer 5HK$101,366 HKD
Retailer 14HK$166,878 HKD

43 data points across 16 retailers

18 retailersHK$21,631 HKD to HK$109,076 HKD

A
Cheapest Retailer
-
HK$21,631 HKD
$2,757 USD
B+
Retailer 2
-
HK$27,138 HKD
$3,459 USD
View
B+
Retailer 3
-
HK$27,162 HKD
$3,462 USD
View
Final sale: no returns
Retailer 4
-
HK$28,135 HKD
$3,586 USD
View
Price last confirmed 19 days ago
B+
Retailer 5
-
HK$29,382 HKD
$3,745 USD
View
Retailer 6
-
HK$33,803 HKD
£3,393 GBP
View
Price last confirmed 15 days ago
B
Retailer 7
-
HK$39,762 HKD
$5,068 USD
View
B+
Retailer 8
-
HK$41,454 HKD
£4,160 GBP
View
B
Retailer 9
-
HK$47,469 HKD
£4,764 GBP
View
B
Retailer 10
-
HK$49,197 HKD
A$9,647 AUD
View
B
Retailer 11
-
HK$63,090 HKD
ZAR 129,908 ZAR
View
Retailer 12
-
HK$63,476 HKD
A$12,447 AUD
View
Price last confirmed 10 days ago
B
Retailer 13
-
HK$70,517 HKD
$8,988 USD
View
B
Retailer 14
-
HK$77,464 HKD
$9,873 USD
View
B
Retailer 15
-
HK$78,826 HKD
£7,911 GBP
View
B
Retailer 16
-
HK$101,366 HKD
$12,920 USD
View
Most Expensive
B
Taylor and Hart
0WHYVRQ · Oct 31
HK$109,076 HKD
$13,903 USD
View
16 more retailers have this diamond
Prices start from HK$21,631 HKDSave up to HK$87,446 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$21,631 HKD