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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 $278 SGD
As of November 6, 2026
Save $1,099 SGD (80%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $1,377 SGD 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 $278 to $1,377, a $1,099 spread on the same certified stone. MOH London lists it at $1,377. 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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $1,377 SGD|Low: $267 SGD|High: $1,398 SGD|Avg: $653 SGD|-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$278 SGD
Retailer 12$323 SGD
Retailer 3$345 SGD
Retailer 9$345 SGD
Retailer 2$443 SGD
Retailer 11$592 SGD
Retailer 5$633 SGD
Retailer 4$645 SGD
Retailer 8$743 SGD
Retailer 10$1,109 SGD
Retailer 6$1,112 SGD
MOH London$1,377 SGD

45 data points across 12 retailers

14 retailers$278 SGD to $1,377 SGD

A
Cheapest Retailer
-
$278 SGD
A
Retailer 2
-
$310 SGD
View
Final sale: no returns
A
Retailer 3
-
$323 SGD
View
Retailer 4
-
$345 SGD
View
Price last confirmed 13 days ago
A
Retailer 5
-
$345 SGD
View
A
Retailer 6
-
$443 SGD
View
B+
Retailer 7
-
$592 SGD
View
B+
Retailer 8
-
$633 SGD
View
B+
Retailer 9
-
$645 SGD
View
B+
Retailer 10
-
$738 SGD
View
B+
Retailer 11
-
$743 SGD
View
B
Retailer 12
-
$1,109 SGD
View
B
Retailer 13
-
$1,112 SGD
View
Most Expensive
B
MOH London
LG541251120 · Nov 5
$1,377 SGD
£846 GBP
View
13 more retailers have this diamond
Prices start from $278 SGDSave up to $1,099 SGD

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
$278 SGD