CaratHunter
Plans
Oval|Lab Grown|IGI

4.51ct E SI1 Oval Lab Grown Diamond

EX • E/SI1

Diamond specifications and retailer prices

From $959 SGD
£591 GBP
As of October 30, 2026
Save $3,455 SGD (78%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $4,414 SGD 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 $959 to $4,414, a $3,455 spread on the same certified stone. Blue Nile lists it at $4,414. 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: $4,414 SGD|Low: $956 SGD|High: $4,414 SGD|Avg: $2,739 SGD
Blue Nile
Retailer 2
Retailer 3
Retailer 4
October 30, 2026
Retailer 2$959 SGD
Retailer 3$1,436 SGD
Retailer 4$4,269 SGD
Blue Nile$4,414 SGD

24 data points across 4 retailers

4 retailers$959 SGD to $4,414 SGD

A
Cheapest Retailer
-
$959 SGD
£591 GBP
B+
Retailer 2
-
$1,436 SGD
$1,123 USD
View
B
Retailer 3
-
$4,269 SGD
CA$4,638 CAD
View
Most Expensive
B
Blue Nile
29974243 · Oct 29
$4,414 SGD
$3,453 USD
View
3 more retailers have this diamond
Prices start from $959 SGDSave up to $3,455 SGD

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
$959 SGD