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Cushion|Lab Grown|IGI

4.51ct F VVS2 Cushion Lab Grown Diamond

ID • F/VVS2 • IGI LG779638251

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG779638251

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)
18 retailers carry this diamond
Most expensive: HK$29,854 HKD at Rare Carat · As of October 19, 2026
View at Rare Carat

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 LG779638251 or 779638251. Listed at 18 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.5°
Pavilion angle33.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG779638251
Dimensions9.99 × 9.19 × 5.61 mm
L/W Ratio1.09
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.99 mm9.19 mm4.51 ctF / VVS2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG779638251
Side View
Table 66.0%Crown 33.5°Girdle: STK-THKPavilion 33.2°Culet: NoneDepth 61.0%

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: Nov 2
Current: HK$9,951 HKD|Low: HK$5,544 HKD|High: HK$27,377 HKD|Avg: HK$13,884 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

36 data points across 13 retailers

18 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
Most Expensive
Rare Carat
HS-61-53A_l_779638251 · Oct 19
HK$29,854 HKD
$3,805 USD
View
Price last confirmed 15 days ago
17 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