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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 $1,072 NZD
$604 USD
As of October 29, 2026
Save $5,653 NZD (84%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $6,725 NZD 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 $1,072 to $6,725, a $5,653 spread on the same certified stone. Brilliant Earth lists it at $6,725. 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: $6,725 NZD|Low: $1,029 NZD|High: $6,725 NZD|Avg: $2,852 NZD
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
Retailer 16
Retailer 17
Retailer 18
Retailer 19
October 31, 2026
Retailer 3$1,072 NZD
Retailer 12$1,113 NZD
Retailer 4$1,199 NZD
Retailer 18$1,199 NZD
Retailer 6$1,329 NZD
Retailer 10$1,329 NZD
Retailer 14$1,561 NZD
Retailer 19$1,765 NZD
Retailer 15$1,999 NZD
Retailer 8$2,046 NZD
Retailer 2$2,080 NZD
Retailer 17$2,842 NZD
Retailer 7$3,247 NZD
Retailer 9$3,495 NZD
Retailer 5$4,200 NZD
Retailer 11$4,297 NZD
Retailer 13$5,800 NZD
Retailer 16$5,891 NZD
Brilliant Earth$6,725 NZD

38 data points across 19 retailers

19 retailers$1,072 NZD to $6,725 NZD

A
Cheapest Retailer
-
$1,072 NZD
$604 USD
A
Retailer 2
-
$1,113 NZD
£494 GBP
View
A
Retailer 3
-
$1,199 NZD
$676 USD
View
Final sale: no returns
A
Retailer 4
-
$1,199 NZD
$676 USD
View
Retailer 5
-
$1,329 NZD
$749 USD
View
Price last confirmed 14 days ago
A
Retailer 6
-
$1,329 NZD
$749 USD
View
A
Retailer 7
-
$1,561 NZD
$880 USD
View
B+
Retailer 8
-
$1,765 NZD
$995 USD
View
A
Retailer 9
-
$1,999 NZD
€1,073 EUR
View
B+
Retailer 10
-
$2,046 NZD
$1,153 USD
View
B+
Retailer 11
-
$2,080 NZD
£923 GBP
View
B+
Retailer 12
-
$2,842 NZD
$1,602 USD
View
B+
Retailer 13
-
$3,247 NZD
$1,830 USD
View
B
Retailer 14
-
$3,495 NZD
$1,970 USD
View
B
Retailer 15
-
$4,200 NZD
$2,367 USD
View
B
Retailer 16
-
$4,297 NZD
$2,422 USD
View
B
Retailer 17
-
$5,800 NZD
£2,574 GBP
View
Retailer 18
-
$5,891 NZD
$3,320 USD
View
Price last confirmed 9 days ago
Most Expensive
B
Brilliant Earth
18205689A · Oct 29
$6,725 NZD
$3,790 USD
View
18 more retailers have this diamond
Prices start from $1,072 NZDSave up to $5,653 NZD

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
$1,072 NZD