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1.51ct D SI1 Round Lab Grown Diamond

ID • D/SI1 • IGI LG794609842

Shape and cutting style on the report: Round brilliant

Certificate IGI LG794609842

Diamond specifications and retailer prices

From $352 NZD
As of November 5, 2026
Save $1,683 NZD (83%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $2,036 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 D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG794609842 or 794609842. Listed at 18 retailers as of November 5, 2026, with prices from $352 to $2,036, a $1,683 spread on the same certified stone. MOH London lists it at $2,036. 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
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.8°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG794609842
Dimensions7.52 × 7.48 × 4.43 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.52 mm7.48 mm1.51 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG794609842
Side View
Table 59.0%Crown 32.8°Girdle: MediumPavilion 40.4°Culet: NoneDepth 59.1%

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: $2,036 NZD|Low: $352 NZD|High: $2,106 NZD|Avg: $1,015 NZD|-3.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
November 6, 2026
Retailer 8$352 NZD
Retailer 5$393 NZD
Retailer 4$409 NZD
Retailer 15$436 NZD
Retailer 9$439 NZD
Retailer 2$676 NZD
Retailer 6$758 NZD
Retailer 18$779 NZD
Retailer 11$788 NZD
Retailer 17$934 NZD
Retailer 3$1,026 NZD
Retailer 12$1,160 NZD
Retailer 14$1,316 NZD
Retailer 16$1,404 NZD
Retailer 10$1,427 NZD
Retailer 7$1,498 NZD
Retailer 13$1,850 NZD
MOH London$2,036 NZD

25 data points across 18 retailers

18 retailers$352 NZD to $2,036 NZD

A
Cheapest Retailer
-
$352 NZD
A
Retailer 2
-
$393 NZD
View
Final sale: no returns
A
Retailer 3
-
$409 NZD
View
A
Retailer 4
-
$436 NZD
View
Retailer 5
-
$439 NZD
View
Price last confirmed 12 days ago
A
Retailer 6
-
$676 NZD
View
B+
Retailer 7
-
$758 NZD
View
A
Retailer 8
-
$779 NZD
View
A
Retailer 9
-
$788 NZD
View
B+
Retailer 10
-
$934 NZD
View
B+
Retailer 11
-
$1,026 NZD
View
B+
Retailer 12
-
$1,160 NZD
View
B+
Retailer 13
-
$1,316 NZD
View
B+
Retailer 14
-
$1,404 NZD
View
B+
Retailer 15
-
$1,427 NZD
View
B+
Retailer 16
-
$1,498 NZD
View
B
Retailer 17
-
$1,850 NZD
View
Most Expensive
B
MOH London
LG794609842 · Nov 5
$2,036 NZD
£901 GBP
View
17 more retailers have this diamond
Prices start from $352 NZDSave up to $1,683 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
$352 NZD