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1.54ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG591371622

Shape and cutting style on the report: Round brilliant

Certificate IGI LG591371622

Diamond specifications and retailer prices

From $379 NZD
As of November 5, 2026
Save $1,498 NZD (80%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $1,877 NZD at MOH London · As of November 5, 2026
View at MOH London

About this 1.54ct lab-grown round diamond

This 1.54ct lab-grown round sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG591371622 or 591371622. Listed at 15 retailers as of November 5, 2026, with prices from $379 to $1,877, a $1,498 spread on the same certified stone. MOH London lists it at $1,877. 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

1.54
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.2°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG591371622
Dimensions7.51 × 7.48 × 4.51 mm
L/W Ratio1.00
Girdle conditionFaceted
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
7.51 mm7.48 mm1.54 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG591371622
Side View
Table 59.0%Crown 33.2°Girdle: MediumPavilion 41°Culet: NoneDepth 60.2%

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 5
Current: $1,877 NZD|Low: $363 NZD|High: $1,923 NZD|Avg: $946 NZD|-1.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
November 6, 2026
Retailer 9$379 NZD
Retailer 5$429 NZD
Retailer 4$439 NZD
Retailer 3$470 NZD
Retailer 11$470 NZD
Retailer 6$786 NZD
Retailer 10$806 NZD
Retailer 2$852 NZD
Retailer 13$1,058 NZD
Retailer 7$1,316 NZD
Retailer 12$1,510 NZD
Retailer 8$1,516 NZD
Retailer 14$1,519 NZD
MOH London$1,877 NZD

45 data points across 14 retailers

15 retailers$379 NZD to $1,877 NZD

A
Cheapest Retailer
-
$379 NZD
A
Retailer 2
-
$429 NZD
View
Final sale: no returns
A
Retailer 3
-
$439 NZD
View
Retailer 4
-
$470 NZD
View
Price last confirmed 12 days ago
A
Retailer 5
-
$470 NZD
View
A
Retailer 6
-
$523 NZD
View
A
Retailer 7
-
$786 NZD
View
B+
Retailer 8
-
$806 NZD
View
A
Retailer 9
-
$852 NZD
View
B+
Retailer 10
-
$1,058 NZD
View
B+
Retailer 11
-
$1,316 NZD
View
B
Retailer 12
-
$1,510 NZD
View
B
Retailer 13
-
$1,516 NZD
View
B
Retailer 14
-
$1,519 NZD
View
Most Expensive
B
MOH London
LG591371622 · Nov 5
$1,877 NZD
£831 GBP
View
14 more retailers have this diamond
Prices start from $379 NZDSave up to $1,498 NZD

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
1.54ct Round
$379 NZD