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Radiant|Lab Grown|IGI

1.00ct E SI1 Radiant Lab Grown Diamond

ID • E/SI1 • IGI LG541251120

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

Certificate IGI LG541251120

Diamond specifications and retailer prices

From $316 AUD
As of November 6, 2026
Save $1,248 AUD (80%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $1,564 AUD at MOH London · As of November 5, 2026
View at MOH London

About this 1ct lab-grown radiant diamond

This 1ct 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 LG541251120 or 541251120. Listed at 14 retailers as of November 5, 2026, with prices from $316 to $1,564, a $1,248 spread on the same certified stone. MOH London lists it at $1,564. 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

1.00
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.1°
Pavilion angle31.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG541251120
Dimensions6.92 × 5.07 × 3.16 mm
L/W Ratio1.36
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
6.92 mm5.07 mm1.00 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG541251120
Side View
Table 66.0%Crown 41.1°Girdle: MED-STKPavilion 31.8°Culet: NoneDepth 62.3%

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: Nov 6
Current: $1,564 AUD|Low: $303 AUD|High: $1,588 AUD|Avg: $742 AUD|-1.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 7$316 AUD
Retailer 12$367 AUD
Retailer 3$392 AUD
Retailer 9$392 AUD
Retailer 2$504 AUD
Retailer 11$672 AUD
Retailer 5$719 AUD
Retailer 4$732 AUD
Retailer 8$844 AUD
Retailer 10$1,259 AUD
Retailer 6$1,263 AUD
MOH London$1,564 AUD

45 data points across 12 retailers

14 retailers$316 AUD to $1,564 AUD

A
Cheapest Retailer
-
$316 AUD
A
Retailer 2
-
$352 AUD
View
Final sale: no returns
A
Retailer 3
-
$367 AUD
View
Retailer 4
-
$392 AUD
View
Price last confirmed 13 days ago
A
Retailer 5
-
$392 AUD
View
A
Retailer 6
-
$504 AUD
View
B+
Retailer 7
-
$672 AUD
View
B+
Retailer 8
-
$719 AUD
View
B+
Retailer 9
-
$732 AUD
View
B+
Retailer 10
-
$838 AUD
View
B+
Retailer 11
-
$844 AUD
View
B
Retailer 12
-
$1,259 AUD
View
B
Retailer 13
-
$1,263 AUD
View
Most Expensive
B
MOH London
LG541251120 · Nov 5
$1,564 AUD
£846 GBP
View
13 more retailers have this diamond
Prices start from $316 AUDSave up to $1,248 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
1.00ct Radiant
$316 AUD