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1.50ct G SI1 Round Lab Grown Diamond

ID • G/SI1 • IGI LG828643490

Shape and cutting style on the report: Round brilliant

Certificate IGI LG828643490

Diamond specifications and retailer prices

From $455 NZD
As of November 6, 2026
Save $1,440 NZD (76%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $1,895 NZD at MOH London · As of November 5, 2026
View at MOH London

About this 1.5ct lab-grown round diamond

This 1.5ct 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 LG828643490 or 828643490. Listed at 15 retailers as of November 5, 2026, with prices from $455 to $1,895, a $1,440 spread on the same certified stone. MOH London lists it at $1,895. 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

1.50
Carat
G
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG828643490
Dimensions7.39 × 7.37 × 4.52 mm
L/W Ratio1.00
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.39 mm7.37 mm1.50 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG828643490
Side View
Table 58.0%Crown 33°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 61.2%

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 6
Current: $1,895 NZD|Low: $455 NZD|High: $1,970 NZD|Avg: $1,019 NZD|-3.7%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 9$455 NZD
Retailer 2$667 NZD
Retailer 7$715 NZD
Retailer 4$719 NZD
Retailer 5$726 NZD
Retailer 3$815 NZD
Retailer 11$1,263 NZD
Retailer 8$1,332 NZD
Retailer 6$1,380 NZD
Retailer 10$1,512 NZD
MOH London$1,895 NZD

41 data points across 11 retailers

15 retailers$455 NZD to $1,895 NZD

Retailer 1
-
$333 NZD
Price last confirmed 27 days ago
Retailer 2
-
$384 NZD
View
Price last confirmed 24 days ago
Retailer 3
-
$411 NZD
View
Price last confirmed 38 days ago
A
Retailer 4
-
$455 NZD
View
A
Retailer 5
-
$667 NZD
View
B+
Retailer 6
-
$715 NZD
View
A
Retailer 7
-
$719 NZD
View
A
Retailer 8
-
$726 NZD
View
A
Retailer 9
-
$815 NZD
View
Retailer 10
-
$1,263 NZD
View
Price last confirmed 12 days ago
Retailer 11
-
$1,324 NZD
View
Price last confirmed 30 days ago
B
Retailer 12
-
$1,332 NZD
View
B
Retailer 13
-
$1,380 NZD
View
B
Retailer 14
-
$1,512 NZD
View
Most Expensive
B
MOH London
LG828643490 · Nov 5
$1,895 NZD
£839 GBP
View
14 more retailers have this diamond
Prices start from $455 NZDSave up to $1,440 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
1.50ct Round
$455 NZD