Radiant|Lab Grown|IGI

4.91ct E SI2 Radiant Lab Grown Diamond

VG • E/SI2 • IGI LG840612369

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

Certificate IGI LG840612369

Diamond specifications and retailer prices

From HK$6,428 HKD
As of October 29, 2026
Save HK$39,317 HKD (86%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: HK$45,745 HKD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 4.91ct lab-grown radiant diamond

This 4.91ct lab-grown radiant sits in the three to five carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a very-good cut grade and certified by IGI LG840612369 or 840612369. Listed at 12 retailers as of October 29, 2026, with prices from HK$6,428 to HK$45,745, a HK$39,317 spread on the same certified stone. Brilliant Earth lists it at HK$45,745. 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

4.91
Carat
E
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle46.8°
Pavilion angle33.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG840612369
Dimensions12.13 × 8.19 × 5.56 mm
L/W Ratio1.48
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
12.13 mm8.19 mm4.91 ctE / SI2
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG840612369
Side View
Table 68.0%Crown 46.8°Girdle: Slightly ThickPavilion 33.9°Culet: NoneDepth 67.9%

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: HK$45,745 HKD|Low: HK$5,113 HKD|High: HK$45,745 HKD|Avg: HK$15,103 HKD
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 27, 2026
Retailer 8HK$5,113 HKD
Retailer 11HK$5,320 HKD
Retailer 5HK$6,428 HKD
Retailer 7HK$8,535 HKD
Retailer 10HK$9,047 HKD
Retailer 2HK$9,174 HKD
Retailer 3HK$13,253 HKD
Retailer 9HK$14,634 HKD
Retailer 6HK$21,891 HKD
Retailer 4HK$25,640 HKD
Brilliant EarthHK$45,745 HKD

22 data points across 11 retailers

12 retailersHK$6,428 HKD to HK$45,745 HKD

Retailer 1
-
HK$4,755 HKD
$606 USD
Price last confirmed 21 days ago
Retailer 2
-
HK$5,113 HKD
£513 GBP
View
Price last confirmed 12 days ago
Retailer 3
-
HK$5,900 HKD
$752 USD
View
Price last confirmed 26 days ago
A
Retailer 4
-
HK$6,428 HKD
View
A
Retailer 5
-
HK$8,535 HKD
€1,036 EUR
View
B
Retailer 6
-
HK$9,047 HKD
$1,153 USD
View
A
Retailer 7
-
HK$9,174 HKD
£921 GBP
View
B+
Retailer 8
-
HK$13,253 HKD
$1,689 USD
View
B+
Retailer 9
-
HK$14,634 HKD
$1,865 USD
View
B
Retailer 10
-
HK$21,891 HKD
$2,790 USD
View
B
Retailer 11
-
HK$25,640 HKD
£2,573 GBP
View
Most Expensive
C
Brilliant Earth
21808458A · Oct 29
HK$45,745 HKD
$5,830 USD
View
11 more retailers have this diamond
Prices start from HK$6,428 HKDSave up to HK$39,317 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
4.91ct Radiant
HK$6,428 HKD