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1.51ct G SI1 Round Lab Grown Diamond

ID • G/SI1 • IGI LG844682459

Shape and cutting style on the report: Round brilliant

Certificate IGI LG844682459

Diamond specifications and retailer prices

From $458 NZD
$258 USD
As of October 27, 2026
Save $1,388 NZD (75%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $1,846 NZD at MOH London · As of October 29, 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 LG844682459 or 844682459. Listed at 9 retailers as of October 27, 2026, with prices from $458 to $1,846, a $1,388 spread on the same certified stone. MOH London lists it at $1,846. 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 angle35.7°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG844682459
Dimensions7.30 × 7.27 × 4.52 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizeNone
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.30 mm7.27 mm1.51 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG844682459
Side View
Table 57.0%Crown 35.7°Girdle: MED-STKPavilion 40.3°Culet: NoneDepth 61.9%

Caratlytics Score

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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: Oct 27
Current: $1,846 NZD|Low: $458 NZD|High: $1,846 NZD|Avg: $984 NZD|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 29, 2026
Retailer 5$458 NZD
Retailer 8$589 NZD
Retailer 6$814 NZD
Retailer 3$820 NZD
Retailer 2$840 NZD
Retailer 4$1,476 NZD
Retailer 7$1,485 NZD
MOH London$1,846 NZD

7 data points across 8 retailers

9 retailers$458 NZD to $1,846 NZD

A
Cheapest Retailer
-
$458 NZD
$258 USD
Retailer 2
-
$458 NZD
$258 USD
View
Price last confirmed 7 days ago
B+
Retailer 3
-
$589 NZD
$332 USD
View
A
Retailer 4
-
$814 NZD
$459 USD
View
A
Retailer 5
-
$820 NZD
£364 GBP
View
A
Retailer 6
-
$840 NZD
£373 GBP
View
B
Retailer 7
-
$1,476 NZD
$832 USD
View
B
Retailer 8
-
$1,485 NZD
SGD 1,131 SGD
View
Most Expensive
B
MOH London
LG844682459 · Oct 29
$1,846 NZD
£819 GBP
View
8 more retailers have this diamond
Prices start from $458 NZDSave up to $1,388 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
$458 NZD