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Marquise|Lab Grown|IGI

0.50ct G SI1 Marquise Lab Grown Diamond

ID • G/SI1 • IGI LG532257821

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG532257821

Diamond specifications and retailer prices

From $219 NZD
$123 USD
As of November 2, 2026
Save $748 NZD (77%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $2,255 NZD at MOH London · As of November 1, 2026
View at MOH London

About this 0.5ct lab-grown marquise diamond

This 0.5ct lab-grown marquise sits in the half to three-quarter carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG532257821 or 532257821. Listed at 14 retailers as of October 31, 2026, with a 342% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

0.50
Carat
G
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.4°
Pavilion angle38.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG532257821
Dimensions8.32 × 4.17 × 2.46 mm
L/W Ratio2.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
8.32 mm4.17 mm0.50 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG532257821
Side View
Table 59.5%Crown 32.4°Girdle: THN-THKPavilion 38.3°Culet: NoneDepth 59.0%

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 2
Current: $2,255 NZD|Low: $210 NZD|High: $2,282 NZD|Avg: $666 NZD|-1.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 2, 2026
Retailer 9$219 NZD
Retailer 5$243 NZD
Retailer 13$252 NZD
Retailer 3$288 NZD
Retailer 10$288 NZD
Retailer 6$498 NZD
Retailer 12$521 NZD
Retailer 2$554 NZD
Retailer 7$652 NZD
Retailer 4$674 NZD
Retailer 11$867 NZD
Retailer 8$967 NZD
MOH London$2,255 NZD

44 data points across 13 retailers

14 retailers$219 NZD to $967 NZD

A
Cheapest Retailer
-
$219 NZD
$123 USD
A
Retailer 2
-
$243 NZD
$137 USD
View
Final sale: no returns
A
Retailer 3
-
$252 NZD
$142 USD
View
Retailer 4
-
$288 NZD
$162 USD
View
Price last confirmed 8 days ago
A
Retailer 5
-
$288 NZD
$162 USD
View
B+
Retailer 6
-
$498 NZD
$280 USD
View
B+
Retailer 7
-
$521 NZD
$293 USD
View
B
Retailer 8
-
$554 NZD
£246 GBP
View
B
Retailer 9
-
$652 NZD
£289 GBP
View
B
Retailer 10
-
$674 NZD
$379 USD
View
B
Retailer 11
-
$751 NZD
HK$3,300 HKD
View
B
Retailer 12
-
$867 NZD
$488 USD
View
B
Retailer 13
-
$967 NZD
$544 USD
View
Most Expensive
MOH London
LG532257821 · Nov 1
$2,255 NZD
£999 GBP
View
Price under review
13 more retailers have this diamond
Prices start from $219 NZDSave up to $748 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
0.50ct Marquise
$219 NZD