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1.50ct G SI1 Round Lab Grown Diamond

EX • G/SI1 • IGI LG818686782

Shape and cutting style on the report: Round brilliant

Certificate IGI LG818686782

Diamond specifications and retailer prices

From $355 NZD
$200 USD
As of November 1, 2026
Save $1,716 NZD (83%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $2,071 NZD at MOH London · As of October 29, 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 LG818686782 or 818686782. Listed at 15 retailers as of October 29, 2026, with prices from $355 to $2,071, a $1,716 spread on the same certified stone. MOH London lists it at $2,071. 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 angle34.1°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818686782
Dimensions7.43 × 7.38 × 4.43 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
7.43 mm7.38 mm1.50 ctG / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818686782
Side View
Table 62.0%Crown 34.1°Girdle: MED-STKPavilion 40.7°Culet: NoneDepth 59.8%

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: $2,071 NZD|Low: $355 NZD|High: $2,084 NZD|Avg: $1,062 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
Retailer 12
November 2, 2026
Retailer 9$355 NZD
Retailer 11$440 NZD
Retailer 5$736 NZD
Retailer 12$765 NZD
Retailer 6$784 NZD
Retailer 4$800 NZD
Retailer 7$805 NZD
Retailer 2$1,148 NZD
Retailer 8$1,269 NZD
Retailer 10$1,508 NZD
Retailer 3$1,510 NZD
MOH London$2,071 NZD

44 data points across 12 retailers

15 retailers$355 NZD to $2,071 NZD

A
Cheapest Retailer
-
$355 NZD
$200 USD
A
Retailer 2
-
$412 NZD
$232 USD
View
Retailer 3
-
$440 NZD
$248 USD
View
Price last confirmed 8 days ago
A
Retailer 4
-
$440 NZD
$248 USD
View
A
Retailer 5
-
$736 NZD
€395 EUR
View
B+
Retailer 6
-
$765 NZD
$431 USD
View
A
Retailer 7
-
$784 NZD
£348 GBP
View
B+
Retailer 8
-
$800 NZD
$451 USD
View
A
Retailer 9
-
$805 NZD
£357 GBP
View
B+
Retailer 10
-
$1,148 NZD
$647 USD
View
B+
Retailer 11
-
$1,269 NZD
$715 USD
View
B
Retailer 12
-
$1,416 NZD
$798 USD
View
B
Retailer 13
-
$1,508 NZD
$850 USD
View
B
Retailer 14
-
$1,510 NZD
$851 USD
View
Most Expensive
B
MOH London
LG818686782 · Oct 29
$2,071 NZD
£919 GBP
View
14 more retailers have this diamond
Prices start from $355 NZDSave up to $1,716 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
$355 NZD