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Radiant|Lab Grown|IGI

5.03ct E SI1 Radiant Lab Grown Diamond

ID • E/SI1 • IGI LG618450557

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG618450557

Diamond specifications and retailer prices

From $885 NZD
$499 USD
As of October 30, 2026
Save $6,549 NZD (88%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $7,434 NZD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 5.03ct lab-grown radiant diamond

This 5.03ct lab-grown radiant sits in the over five carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG618450557 or 618450557. Listed at 16 retailers as of October 30, 2026, with prices from $885 to $7,434, a $6,549 spread on the same certified stone. Brilliant Earth lists it at $7,434. 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

5.03
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle45°
Pavilion angle35.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG618450557
Dimensions12.15 × 8.35 × 5.72 mm
L/W Ratio1.46
Culet sizePointed
Top View
12.15 mm8.35 mm5.03 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG618450557
Side View
Table 65.0%Crown 45°Girdle: MediumPavilion 35.7°Culet: NoneDepth 68.5%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $7,434 NZD|Low: $885 NZD|High: $8,996 NZD|Avg: $2,685 NZD|-17.4%
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
October 31, 2026
Retailer 15$885 NZD
Retailer 11$992 NZD
Retailer 3$1,098 NZD
Retailer 5$1,098 NZD
Retailer 14$1,155 NZD
Retailer 4$1,659 NZD
Retailer 6$1,707 NZD
Retailer 2$1,766 NZD
Retailer 9$1,828 NZD
Retailer 7$1,893 NZD
Retailer 12$2,835 NZD
Retailer 16$2,890 NZD
Retailer 8$3,506 NZD
Retailer 10$4,610 NZD
Retailer 13$5,208 NZD
Brilliant Earth$7,434 NZD

38 data points across 16 retailers

16 retailers$885 NZD to $7,434 NZD

A
Cheapest Retailer
-
$885 NZD
$499 USD
A
Retailer 2
-
$992 NZD
$559 USD
View
A
Retailer 3
-
$1,098 NZD
$619 USD
View
Retailer 4
-
$1,098 NZD
$619 USD
View
Price last confirmed 15 days ago
Retailer 5
-
$1,155 NZD
£513 GBP
View
Price last confirmed 14 days ago
A
Retailer 6
-
$1,659 NZD
$935 USD
View
B+
Retailer 7
-
$1,707 NZD
$962 USD
View
A
Retailer 8
-
$1,766 NZD
€948 EUR
View
A
Retailer 9
-
$1,828 NZD
£811 GBP
View
A
Retailer 10
-
$1,893 NZD
$1,067 USD
View
B+
Retailer 11
-
$2,835 NZD
$1,598 USD
View
B+
Retailer 12
-
$2,890 NZD
$1,629 USD
View
B+
Retailer 13
-
$3,506 NZD
$1,976 USD
View
B
Retailer 14
-
$4,610 NZD
£2,046 GBP
View
B
Retailer 15
-
$5,208 NZD
$2,935 USD
View
Most Expensive
B
Brilliant Earth
9016856A · Oct 30
$7,434 NZD
$4,190 USD
View
15 more retailers have this diamond
Prices start from $885 NZDSave up to $6,549 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
5.03ct Radiant
$885 NZD