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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 $1,048 CAD
£591 GBP
As of October 30, 2026
Save $3,776 CAD (78%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $4,823 CAD at Blue Nile · As of October 29, 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 29, 2026, with prices from $1,048 to $4,823, a $3,776 spread on the same certified stone. Blue Nile lists it at $4,823. 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
Color
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: $4,823 CAD|Low: $915 CAD|High: $4,823 CAD|Avg: $2,491 CAD
Blue Nile
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 30, 2026
Retailer 4$915 CAD
Retailer 2$1,048 CAD
Retailer 6$1,050 CAD
Retailer 3$1,569 CAD
Retailer 5$3,291 CAD
Retailer 7$4,665 CAD
Blue Nile$4,823 CAD

27 data points across 7 retailers

4 retailers$1,048 CAD to $4,823 CAD

A
Cheapest Retailer
-
$1,048 CAD
£591 GBP
B+
Retailer 2
-
$1,569 CAD
$1,123 USD
View
B
Retailer 3
-
$4,665 CAD
View
Most Expensive
B
Blue Nile
29974243 · Oct 29
$4,823 CAD
$3,453 USD
View
3 more retailers have this diamond
Prices start from $1,048 CADSave up to $3,776 CAD

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
$1,048 CAD