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Oval|Lab Grown|IGI

4.50ct E SI1 Oval Lab Grown Diamond

VG • E/SI1 • IGI LG745516776

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG745516776

Diamond specifications and retailer prices

From $860 AUD
$604 USD
As of October 29, 2026
Save $4,536 AUD (84%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $5,395 AUD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 4.5ct lab-grown oval diamond

This 4.5ct lab-grown oval sits in the three to five carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG745516776 or 745516776. Listed at 19 retailers as of October 29, 2026, with prices from $860 to $5,395, a $4,536 spread on the same certified stone. Brilliant Earth lists it at $5,395. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

4.50
Carat
E
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.7°
Pavilion angle41.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG745516776
Dimensions12.78 × 9.04 × 5.88 mm
L/W Ratio1.41
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
12.78 mm9.04 mm4.50 ctE / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG745516776
Side View
Table 57.0%Crown 36.7°Girdle: STK-THKPavilion 41.5°Culet: NoneDepth 65.0%

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: Oct 29
Current: $5,395 AUD|Low: $826 AUD|High: $5,395 AUD|Avg: $2,288 AUD
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
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Retailer 17
Retailer 18
Retailer 19
October 31, 2026
Retailer 3$860 AUD
Retailer 12$893 AUD
Retailer 4$962 AUD
Retailer 18$962 AUD
Retailer 6$1,066 AUD
Retailer 10$1,066 AUD
Retailer 14$1,253 AUD
Retailer 19$1,416 AUD
Retailer 15$1,604 AUD
Retailer 8$1,641 AUD
Retailer 2$1,669 AUD
Retailer 17$2,281 AUD
Retailer 7$2,605 AUD
Retailer 9$2,804 AUD
Retailer 5$3,370 AUD
Retailer 11$3,448 AUD
Retailer 13$4,654 AUD
Retailer 16$4,726 AUD
Brilliant Earth$5,395 AUD

38 data points across 19 retailers

19 retailers$860 AUD to $5,395 AUD

A
Cheapest Retailer
-
$860 AUD
$604 USD
A
Retailer 2
-
$893 AUD
£494 GBP
View
A
Retailer 3
-
$962 AUD
$676 USD
View
Final sale: no returns
A
Retailer 4
-
$962 AUD
$676 USD
View
Retailer 5
-
$1,066 AUD
$749 USD
View
Price last confirmed 15 days ago
A
Retailer 6
-
$1,066 AUD
$749 USD
View
A
Retailer 7
-
$1,253 AUD
$880 USD
View
B+
Retailer 8
-
$1,416 AUD
$995 USD
View
A
Retailer 9
-
$1,604 AUD
€1,073 EUR
View
B+
Retailer 10
-
$1,641 AUD
$1,153 USD
View
B+
Retailer 11
-
$1,669 AUD
£923 GBP
View
B+
Retailer 12
-
$2,281 AUD
$1,602 USD
View
B+
Retailer 13
-
$2,605 AUD
$1,830 USD
View
B
Retailer 14
-
$2,804 AUD
$1,970 USD
View
B
Retailer 15
-
$3,370 AUD
$2,367 USD
View
B
Retailer 16
-
$3,448 AUD
$2,422 USD
View
B
Retailer 17
-
$4,654 AUD
£2,574 GBP
View
Retailer 18
-
$4,726 AUD
$3,320 USD
View
Price last confirmed 10 days ago
Most Expensive
B
Brilliant Earth
18205689A · Oct 29
$5,395 AUD
$3,790 USD
View
18 more retailers have this diamond
Prices start from $860 AUDSave up to $4,536 AUD

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
4.50ct Oval
$860 AUD