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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 HK$3,915 HKD
$499 USD
As of October 30, 2026
Save HK$28,958 HKD (88%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: HK$32,873 HKD 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 HK$3,915 to HK$32,873, a HK$28,958 spread on the same certified stone. Brilliant Earth lists it at HK$32,873. 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

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: HK$32,873 HKD|Low: HK$3,915 HKD|High: HK$39,778 HKD|Avg: HK$11,921 HKD|-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 15HK$3,915 HKD
Retailer 11HK$4,386 HKD
Retailer 3HK$4,856 HKD
Retailer 5HK$4,856 HKD
Retailer 14HK$5,109 HKD
Retailer 4HK$7,336 HKD
Retailer 6HK$7,548 HKD
Retailer 2HK$7,810 HKD
Retailer 9HK$8,084 HKD
Retailer 7HK$8,371 HKD
Retailer 12HK$12,537 HKD
Retailer 16HK$12,781 HKD
Retailer 8HK$15,503 HKD
Retailer 10HK$20,386 HKD
Retailer 13HK$23,027 HKD
Brilliant EarthHK$32,873 HKD

39 data points across 16 retailers

16 retailersHK$3,915 HKD to HK$32,873 HKD

A
Cheapest Retailer
-
HK$3,915 HKD
$499 USD
A
Retailer 2
-
HK$4,386 HKD
$559 USD
View
A
Retailer 3
-
HK$4,856 HKD
$619 USD
View
Retailer 4
-
HK$4,856 HKD
$619 USD
View
Price last confirmed 15 days ago
Retailer 5
-
HK$5,109 HKD
£513 GBP
View
Price last confirmed 14 days ago
A
Retailer 6
-
HK$7,336 HKD
$935 USD
View
B+
Retailer 7
-
HK$7,548 HKD
$962 USD
View
A
Retailer 8
-
HK$7,810 HKD
€948 EUR
View
A
Retailer 9
-
HK$8,084 HKD
£811 GBP
View
A
Retailer 10
-
HK$8,371 HKD
$1,067 USD
View
B+
Retailer 11
-
HK$12,537 HKD
$1,598 USD
View
B+
Retailer 12
-
HK$12,781 HKD
$1,629 USD
View
B+
Retailer 13
-
HK$15,503 HKD
$1,976 USD
View
B
Retailer 14
-
HK$20,386 HKD
£2,046 GBP
View
B
Retailer 15
-
HK$23,027 HKD
$2,935 USD
View
Most Expensive
B
Brilliant Earth
9016856A · Oct 30
HK$32,873 HKD
$4,190 USD
View
15 more retailers have this diamond
Prices start from HK$3,915 HKDSave up to HK$28,958 HKD

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
HK$3,915 HKD