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Radiant|Lab Grown|IGI

1.05ct E SI1 Radiant Lab Grown Diamond

ID • E/SI1 • IGI LG644499133

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

Certificate IGI LG644499133

Diamond specifications and retailer prices

From $272 AUD
$191 USD
As of October 25, 2026
Save $999 AUD (79%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $1,271 AUD at MOH London · As of October 25, 2026
View at MOH London

About this 1.05ct lab-grown radiant diamond

This 1.05ct lab-grown radiant sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG644499133 or 644499133. Listed at 8 retailers as of October 25, 2026, with prices from $272 to $1,271, a $999 spread on the same certified stone. MOH London lists it at $1,271. 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

1.05
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.8°
Pavilion angle39.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG644499133
Dimensions5.73 × 5.72 × 3.88 mm
L/W Ratio1.00
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
5.73 mm5.72 mm1.05 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG644499133
Side View
Table 64.0%Crown 41.8°Girdle: MediumPavilion 39.1°Culet: NoneDepth 67.8%

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 25
Current: $1,271 AUD|Low: $272 AUD|High: $1,998 AUD|Avg: $717 AUD|-35.7%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 28, 2026
Retailer 3$272 AUD
Retailer 5$354 AUD
Retailer 4$462 AUD
Retailer 7$495 AUD
Retailer 2$516 AUD
Retailer 9$681 AUD
Retailer 6$727 AUD
Retailer 8$840 AUD
MOH London$1,271 AUD

23 data points across 9 retailers

8 retailers$272 AUD to $1,271 AUD

A
Cheapest Retailer
-
$272 AUD
$191 USD
Retailer 2
-
$354 AUD
£196 GBP
View
Price last confirmed 13 days ago
A
Retailer 3
-
$462 AUD
€309 EUR
View
B+
Retailer 4
-
$495 AUD
$348 USD
View
A
Retailer 5
-
$516 AUD
£285 GBP
View
B+
Retailer 6
-
$727 AUD
$511 USD
View
B
Retailer 7
-
$989 AUD
£547 GBP
View
Most Expensive
B
MOH London
LG644499133 · Oct 25
$1,271 AUD
£703 GBP
View
7 more retailers have this diamond
Prices start from $272 AUDSave up to $999 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
1.05ct Radiant
$272 AUD