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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 $1,166 AUD
HK$6,400 HKD
As of October 29, 2026
Save $7,132 AUD (86%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $8,298 AUD at Brilliant Earth · As of October 28, 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 28, 2026, with prices from $1,166 to $8,298, a $7,132 spread on the same certified stone. Brilliant Earth lists it at $8,298. 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: $8,298 AUD|Low: $928 AUD|High: $8,298 AUD|Avg: $2,740 AUD
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 8$928 AUD
Retailer 11$965 AUD
Retailer 5$1,166 AUD
Retailer 7$1,548 AUD
Retailer 10$1,641 AUD
Retailer 2$1,664 AUD
Retailer 3$2,404 AUD
Retailer 9$2,655 AUD
Retailer 6$3,971 AUD
Retailer 4$4,651 AUD
Brilliant Earth$8,298 AUD

22 data points across 11 retailers

12 retailers$1,166 AUD to $8,298 AUD

A
Retailer 1
-
$863 AUD
$606 USD
Price last confirmed 21 days ago
A
Retailer 2
-
$928 AUD
£513 GBP
View
Price last confirmed 12 days ago
A
Retailer 3
-
$1,070 AUD
$752 USD
View
Price last confirmed 26 days ago
A
Retailer 4
-
$1,166 AUD
HK$6,400 HKD
View
A
Retailer 5
-
$1,548 AUD
€1,036 EUR
View
B
Retailer 6
-
$1,641 AUD
$1,153 USD
View
A
Retailer 7
-
$1,664 AUD
£921 GBP
View
B+
Retailer 8
-
$2,404 AUD
$1,689 USD
View
B+
Retailer 9
-
$2,655 AUD
$1,865 USD
View
B
Retailer 10
-
$3,971 AUD
$2,790 USD
View
B
Retailer 11
-
$4,651 AUD
£2,573 GBP
View
Most Expensive
C
Brilliant Earth
21808458A · Oct 28
$8,298 AUD
$5,830 USD
View
11 more retailers have this diamond
Prices start from $1,166 AUDSave up to $7,132 AUD

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
$1,166 AUD