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Oval|Lab Grown|IGI

4.51ct F VS2 Oval Lab Grown Diamond

ID • F/VS2 • IGI LG821686846

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG821686846

Diamond specifications and retailer prices

From HK$26,825 HKD
£2,692 GBP
As of October 26, 2026
Save HK$20,487 HKD (43%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: HK$57,826 HKD at Brilliant Earth · As of October 26, 2026
View at Brilliant Earth

About this 4.51ct lab-grown oval diamond

This 4.51ct lab-grown oval sits in the three to five carat band, graded F colour (colourless) and VS2 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG821686846 or 821686846. Listed at 11 retailers as of October 26, 2026, with a 76% 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
VS2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.8°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG821686846
Dimensions13.04 × 9.49 × 5.76 mm
L/W Ratio1.37
Girdle conditionFaceted
Culet sizeNone
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
13.04 mm9.49 mm4.51 ctF / VS2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG821686846
Side View
Table 62.0%Crown 33.8°Girdle: MED-STKPavilion 41°Culet: NoneDepth 60.7%

Caratlytics Score

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B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 26
Current: HK$57,826 HKD|Low: HK$5,186 HKD|High: HK$59,552 HKD|Avg: HK$24,226 HKD|-2.9%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 25, 2026
Retailer 8HK$5,328 HKD
Retailer 6HK$5,798 HKD
Retailer 4HK$6,289 HKD
Retailer 11HK$10,059 HKD
Retailer 7HK$15,786 HKD
Retailer 5HK$15,810 HKD
Retailer 9HK$19,184 HKD
Retailer 2HK$26,825 HKD
Retailer 3HK$32,147 HKD
Retailer 10HK$47,312 HKD
Brilliant EarthHK$57,826 HKD

22 data points across 11 retailers

11 retailersHK$26,825 HKD to HK$47,312 HKD

Retailer 1
-
HK$5,328 HKD
$679 USD
Price last confirmed 10 days ago
Retailer 2
-
HK$5,798 HKD
$739 USD
View
Price last confirmed 9 days ago
Retailer 3
-
HK$10,059 HKD
$1,282 USD
View
Price last confirmed 7 days ago
Retailer 4
-
HK$15,786 HKD
$2,012 USD
View
Price last confirmed 7 days ago
Retailer 5
-
HK$15,810 HKD
$2,015 USD
View
Price last confirmed 6 days ago
Retailer 6
-
HK$16,948 HKD
$2,160 USD
View
Price last confirmed 8 days ago
Retailer 7
-
HK$19,184 HKD
$2,445 USD
View
Price last confirmed 8 days ago
B
Retailer 8
-
HK$26,825 HKD
£2,692 GBP
View
B
Retailer 9
-
HK$32,147 HKD
$4,097 USD
View
B
Retailer 10
-
HK$47,312 HKD
$6,030 USD
View
Most Expensive
Brilliant Earth
20927302Y · Oct 26
HK$57,826 HKD
$7,370 USD
View
Price last confirmed 7 days ago
10 more retailers have this diamond
Prices start from HK$26,825 HKDSave up to HK$20,487 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.

B
4.51ct Oval
HK$26,825 HKD