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Cushion|Lab Grown|IGI

4.51ct F VVS2 Cushion Lab Grown Diamond

EX • F/VVS2 • IGI LG782668976

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG782668976

Diamond specifications and retailer prices

From HK$5,546 HKD
£557 GBP
As of November 2, 2026
Save HK$21,494 HKD (79%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: HK$57,196 HKD at Queensmith · As of October 10, 2026
View at Queensmith

About this 4.51ct lab-grown cushion diamond

This 4.51ct lab-grown cushion sits in the three to five carat band, graded F colour (colourless) and VVS2 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG782668976 or 782668976. Listed at 19 retailers as of October 31, 2026, with a 388% 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

4.51
Carat
F
Colour
VVS2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.6°
Pavilion angle34.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG782668976
Dimensions9.38 × 9.00 × 6.07 mm
L/W Ratio1.04
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.38 mm9.00 mm4.51 ctF / VVS2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG782668976
Side View
Table 60.0%Crown 37.6°Girdle: STK-VTKPavilion 34.4°Culet: NoneDepth 67.4%

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: Nov 2
Current: HK$9,951 HKD|Low: HK$5,544 HKD|High: HK$27,377 HKD|Avg: HK$14,010 HKD|+0.3%
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
November 3, 2026
Retailer 7HK$5,546 HKD
Retailer 5HK$5,994 HKD
Retailer 2HK$6,214 HKD
Retailer 12HK$7,611 HKD
Retailer 13HK$8,882 HKD
Retailer 1HK$9,951 HKD
Retailer 9HK$10,059 HKD
Retailer 6HK$13,222 HKD
Retailer 11HK$13,316 HKD
Retailer 3HK$20,457 HKD
Retailer 4HK$21,192 HKD
Retailer 8HK$26,177 HKD
Retailer 10HK$27,040 HKD

37 data points across 13 retailers

19 retailersHK$5,546 HKD to HK$27,040 HKD

A
Cheapest Retailer
-
HK$5,546 HKD
£557 GBP
A
Retailer 2
-
HK$5,994 HKD
$764 USD
View
Final sale: no returns
Retailer 3
-
HK$6,214 HKD
$792 USD
View
Price last confirmed 18 days ago
A
Retailer 4
-
HK$7,611 HKD
$970 USD
View
B+
Retailer 5
-
HK$8,882 HKD
$1,132 USD
View
A
Retailer 6
-
HK$9,643 HKD
$1,229 USD
View
A
Retailer 7
-
HK$9,951 HKD
£999 GBP
View
A
Retailer 8
-
HK$10,059 HKD
€1,221 EUR
View
A
Retailer 9
-
HK$13,222 HKD
ZAR 27,224 ZAR
View
A
Retailer 10
-
HK$13,316 HKD
A$2,611 AUD
View
A
Retailer 11
-
HK$14,680 HKD
$1,871 USD
View
B+
Retailer 12
-
HK$19,371 HKD
£1,944 GBP
View
B+
Retailer 13
-
HK$20,457 HKD
$2,607 USD
View
B+
Retailer 14
-
HK$21,192 HKD
$2,701 USD
View
B+
Retailer 15
-
HK$21,435 HKD
$2,732 USD
View
B+
Retailer 16
-
HK$26,177 HKD
£2,627 GBP
View
B+
Retailer 17
-
HK$27,040 HKD
A$5,302 AUD
View
Retailer 18
-
HK$29,854 HKD
$3,805 USD
View
Price last confirmed 15 days ago
Most Expensive
Queensmith
LG782668976 · Oct 10
HK$57,196 HKD
£5,740 GBP
View
Price last confirmed 23 days ago
18 more retailers have this diamond
Prices start from HK$5,546 HKDSave up to HK$21,494 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
4.51ct Cushion
HK$5,546 HKD