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1.50ct G SI1 Round Lab Grown Diamond

EX • G/SI1 • IGI LG771601890

Shape and cutting style on the report: Round brilliant

Certificate IGI LG771601890

Diamond specifications and retailer prices

From $390 NZD
$220 USD
As of November 1, 2026
Save $1,523 NZD (80%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $1,913 NZD at MOH London · As of October 26, 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 LG771601890 or 771601890. Listed at 10 retailers as of October 26, 2026, with prices from $390 to $1,913, a $1,523 spread on the same certified stone. MOH London lists it at $1,913. 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.3°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG771601890
Dimensions7.40 × 7.37 × 4.45 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.40 mm7.37 mm1.50 ctG / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG771601890
Side View
Table 60.0%Crown 32.3°Girdle: MED-STKPavilion 41°Culet: NoneDepth 60.2%

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: $1,913 NZD|Low: $390 NZD|High: $1,997 NZD|Avg: $1,126 NZD|-0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 11$390 NZD
Retailer 5$619 NZD
Retailer 9$752 NZD
Retailer 7$854 NZD
Retailer 2$882 NZD
Retailer 8$1,020 NZD
Retailer 6$1,233 NZD
Retailer 10$1,393 NZD
Retailer 4$1,533 NZD
Retailer 3$1,838 NZD
MOH London$1,913 NZD

19 data points across 11 retailers

10 retailers$390 NZD to $1,913 NZD

A
Cheapest Retailer
-
$390 NZD
$220 USD
Final sale: no returns
A
Retailer 2
-
$619 NZD
$349 USD
View
B+
Retailer 3
-
$752 NZD
$424 USD
View
B+
Retailer 4
-
$882 NZD
£392 GBP
View
B+
Retailer 5
-
$1,020 NZD
$575 USD
View
B+
Retailer 6
-
$1,233 NZD
$695 USD
View
B+
Retailer 7
-
$1,393 NZD
$785 USD
View
B
Retailer 8
-
$1,533 NZD
$864 USD
View
B
Retailer 9
-
$1,838 NZD
$1,036 USD
View
Most Expensive
B
MOH London
LG771601890 · Oct 26
$1,913 NZD
£849 GBP
View
9 more retailers have this diamond
Prices start from $390 NZDSave up to $1,523 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
$390 NZD