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1.51ct G SI1 Round Lab Grown Diamond

VG • G/SI1 • IGI LG844634675

Shape and cutting style on the report: Round brilliant

Certificate IGI LG844634675

Diamond specifications and retailer prices

From $688 NZD
$388 USD
As of November 1, 2026
Save $1,123 NZD (62%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $1,812 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 very-good cut grade and certified by IGI LG844634675 or 844634675. Listed at 6 retailers as of November 1, 2026, with prices from $688 to $1,812, a $1,123 spread on the same certified stone. MOH London lists it at $1,812. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.51
Carat
G
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle34.1°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG844634675
Dimensions7.22 × 7.31 × 4.52 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.22 mm7.31 mm1.51 ctG / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG844634675
Side View
Table 57.0%Crown 34.1°Girdle: STK-THKPavilion 40.2°Culet: NoneDepth 62.2%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $1,812 NZD|Low: $658 NZD|High: $1,823 NZD|Avg: $1,057 NZD|-0.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 2, 2026
Retailer 4$688 NZD
Retailer 2$694 NZD
Retailer 3$793 NZD
Retailer 5$981 NZD
Retailer 6$1,343 NZD
MOH London$1,812 NZD

16 data points across 6 retailers

6 retailers$688 NZD to $1,812 NZD

B+
Cheapest Retailer
-
$688 NZD
$388 USD
A
Retailer 2
-
$694 NZD
£308 GBP
View
B+
Retailer 3
-
$793 NZD
$447 USD
View
B+
Retailer 4
-
$981 NZD
$553 USD
View
B
Retailer 5
-
$1,343 NZD
$757 USD
View
Most Expensive
B
MOH London
LG844634675 · Nov 1
$1,812 NZD
£804 GBP
View
5 more retailers have this diamond
Prices start from $688 NZDSave up to $1,123 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
$688 NZD