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1.51ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG621492010

Shape and cutting style on the report: Round brilliant

Certificate IGI LG621492010

Diamond specifications and retailer prices

From $436 NZD
As of November 3, 2026
Save $1,430 NZD (77%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $1,866 NZD at MOH London · As of November 5, 2026
View at MOH London

About this 1.51ct lab-grown round diamond

This 1.51ct 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 LG621492010 or 621492010. Listed at 11 retailers as of November 3, 2026, with prices from $436 to $1,866, a $1,430 spread on the same certified stone. MOH London lists it at $1,866. 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

1.51
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.4°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG621492010
Dimensions7.36 × 7.32 × 4.53 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
HEARTS & ARROWS This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
7.36 mm7.32 mm1.51 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG621492010
Side View
Table 58.0%Crown 35.4°Girdle: MediumPavilion 40.7°Culet: NoneDepth 61.7%

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 3
Current: $1,866 NZD|Low: $377 NZD|High: $1,905 NZD|Avg: $984 NZD|-2.0%
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 5, 2026
Retailer 3$404 NZD
Retailer 7$436 NZD
Retailer 5$724 NZD
Retailer 9$761 NZD
Retailer 11$802 NZD
Retailer 10$808 NZD
Retailer 2$850 NZD
Retailer 12$1,053 NZD
Retailer 8$1,505 NZD
Retailer 4$1,548 NZD
Retailer 6$1,640 NZD
MOH London$1,866 NZD

37 data points across 12 retailers

11 retailers$436 NZD to $1,866 NZD

Retailer 1
-
$404 NZD
Price last confirmed 29 days ago
A
Retailer 2
-
$436 NZD
View
A
Retailer 3
-
$724 NZD
View
A
Retailer 4
-
$761 NZD
View
B+
Retailer 5
-
$802 NZD
View
B+
Retailer 6
-
$850 NZD
View
B+
Retailer 7
-
$1,053 NZD
View
B
Retailer 8
-
$1,505 NZD
View
B
Retailer 9
-
$1,548 NZD
View
B
Retailer 10
-
$1,640 NZD
View
Most Expensive
B
MOH London
LG621492010 · Nov 5
$1,866 NZD
£826 GBP
View
10 more retailers have this diamond
Prices start from $436 NZDSave up to $1,430 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
1.51ct Round
$436 NZD