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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 $499 USD
As of October 27, 2026
Save $4,141 USD (89%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $4,640 USD at Brilliant Earth · As of October 29, 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 27, 2026, with prices from $499 to $4,640, a $4,141 spread on the same certified stone. Brilliant Earth lists it at $4,640. 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
Color
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

How it works →
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 27
Current: $4,640 USD|Low: $499 USD|High: $5,070 USD|Avg: $1,529 USD|-8.5%
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 30, 2026
Retailer 15$499 USD
Retailer 10$559 USD
Retailer 3$619 USD
Retailer 5$619 USD
Retailer 14$651 USD
Retailer 4$935 USD
Retailer 6$962 USD
Retailer 2$1,030 USD
Retailer 13$1,059 USD
Retailer 7$1,067 USD
Retailer 11$1,598 USD
Retailer 16$1,629 USD
Retailer 8$1,976 USD
Retailer 9$2,598 USD
Retailer 12$2,935 USD
Brilliant Earth$4,640 USD

39 data points across 16 retailers

16 retailers$499 USD to $4,640 USD

A
Cheapest Retailer
-
$499 USD
A
Retailer 2
-
$559 USD
View
A
Retailer 3
-
$619 USD
View
Retailer 4
-
$619 USD
View
Price last confirmed 13 days ago
Retailer 5
-
$651 USD
£513 GBP
View
Price last confirmed 13 days ago
A
Retailer 6
-
$935 USD
View
B+
Retailer 7
-
$962 USD
View
A
Retailer 8
-
$1,030 USD
£811 GBP
View
A
Retailer 9
-
$1,059 USD
€1,009 EUR
View
A
Retailer 10
-
$1,067 USD
View
B+
Retailer 11
-
$1,598 USD
View
B+
Retailer 12
-
$1,629 USD
View
B+
Retailer 13
-
$1,976 USD
View
B
Retailer 14
-
$2,598 USD
£2,046 GBP
View
B
Retailer 15
-
$2,935 USD
View
Most Expensive
B
Brilliant Earth
9016856A · Oct 29
$4,640 USD
View
15 more retailers have this diamond
Prices start from $499 USDSave up to $4,141 USD

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
$499 USD