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1.51ct G SI1 Round Lab Grown Diamond

ID • G/SI1 • IGI LG794610644

Shape and cutting style on the report: Round brilliant

Certificate IGI LG794610644

Diamond specifications and retailer prices

From $348 NZD
$196 USD
As of November 1, 2026
Save $1,664 NZD (83%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $2,012 NZD at MOH London · As of November 1, 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 G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG794610644 or 794610644. Listed at 19 retailers as of November 1, 2026, with prices from $348 to $2,012, a $1,664 spread on the same certified stone. MOH London lists it at $2,012. 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
G
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG794610644
Dimensions7.44 × 7.38 × 4.47 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
7.44 mm7.38 mm1.51 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG794610644
Side View
Table 57.0%Crown 34°Girdle: MediumPavilion 40.2°Culet: NoneDepth 60.4%

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 1
Current: $2,012 NZD|Low: $339 NZD|High: $2,071 NZD|Avg: $989 NZD|-1.8%
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
November 1, 2026
Retailer 4$348 NZD
Retailer 14$387 NZD
Retailer 13$403 NZD
Retailer 9$431 NZD
Retailer 6$433 NZD
Retailer 15$749 NZD
Retailer 2$784 NZD
Retailer 7$806 NZD
Retailer 12$1,020 NZD
Retailer 11$1,114 NZD
Retailer 5$1,269 NZD
Retailer 10$1,384 NZD
Retailer 16$1,402 NZD
Retailer 3$1,479 NZD
Retailer 8$1,526 NZD
MOH London$2,012 NZD

36 data points across 16 retailers

19 retailers$348 NZD to $2,012 NZD

Retailer 1
-
$348 NZD
$196 USD
Price last confirmed 44 days ago
A
Retailer 2
-
$348 NZD
$196 USD
View
A
Retailer 3
-
$387 NZD
$218 USD
View
Final sale: no returns
A
Retailer 4
-
$403 NZD
$227 USD
View
Retailer 5
-
$422 NZD
$238 USD
View
Price last confirmed 43 days ago
A
Retailer 6
-
$431 NZD
$243 USD
View
Retailer 7
-
$433 NZD
$244 USD
View
Price last confirmed 7 days ago
B+
Retailer 8
-
$749 NZD
$422 USD
View
A
Retailer 9
-
$784 NZD
£348 GBP
View
A
Retailer 10
-
$806 NZD
$454 USD
View
B+
Retailer 11
-
$1,020 NZD
$575 USD
View
B+
Retailer 12
-
$1,114 NZD
$628 USD
View
B+
Retailer 13
-
$1,269 NZD
$715 USD
View
Retailer 14
-
$1,375 NZD
$775 USD
View
Price last confirmed 41 days ago
B+
Retailer 15
-
$1,384 NZD
$780 USD
View
B+
Retailer 16
-
$1,402 NZD
SGD 1,068 SGD
View
B+
Retailer 17
-
$1,479 NZD
$833 USD
View
B
Retailer 18
-
$1,526 NZD
$860 USD
View
Most Expensive
B
MOH London
LG794610644 · Nov 1
$2,012 NZD
£893 GBP
View
18 more retailers have this diamond
Prices start from $348 NZDSave up to $1,664 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
$348 NZD