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Oval|Lab Grown|IGI

4.51ct E SI1 Oval Lab Grown Diamond

EX • E/SI1

Diamond specifications and retailer prices

From HK$5,886 HKD
£591 GBP
As of October 30, 2026
Save HK$21,205 HKD (78%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: HK$27,091 HKD at Blue Nile · As of October 31, 2026
View at Blue Nile

About this 4.51ct lab-grown oval diamond

This 4.51ct lab-grown oval sits in the three to five carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI. Listed at 4 retailers as of October 30, 2026, with prices from HK$5,886 to HK$27,091, a HK$21,205 spread on the same certified stone. Blue Nile lists it at HK$27,091. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

4.51
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
Dimensions13.71 × 9.18 × 5.77 mm
L/W Ratio1.49
Top View
13.71 mm9.18 mm4.51 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI
Side View
Table 60.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 62.9%

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 30
Current: HK$27,091 HKD|Low: HK$5,866 HKD|High: HK$27,091 HKD|Avg: HK$16,812 HKD
Blue Nile
Retailer 2
Retailer 3
Retailer 4
October 30, 2026
Retailer 2HK$5,886 HKD
Retailer 3HK$8,811 HKD
Retailer 4HK$26,201 HKD
Blue NileHK$27,091 HKD

24 data points across 4 retailers

4 retailersHK$5,886 HKD to HK$27,091 HKD

A
Cheapest Retailer
-
HK$5,886 HKD
£591 GBP
B+
Retailer 2
-
HK$8,811 HKD
$1,123 USD
View
B
Retailer 3
-
HK$26,201 HKD
CA$4,638 CAD
View
Most Expensive
B
Blue Nile
29974243 · Oct 31
HK$27,091 HKD
$3,453 USD
View
3 more retailers have this diamond
Prices start from HK$5,886 HKDSave up to HK$21,205 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 Oval
HK$5,886 HKD