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Marquise|Lab Grown|IGI

0.51ct E SI1 Marquise Lab Grown Diamond

ID • E/SI1 • IGI LG542212263

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG542212263

Diamond specifications and retailer prices

From $220 NZD
$124 USD
As of October 30, 2026
Save $1,469 NZD (87%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $2,296 NZD at MOH London · As of October 29, 2026
View at MOH London

About this 0.51ct lab-grown marquise diamond

This 0.51ct lab-grown marquise sits in the half to three-quarter carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG542212263 or 542212263. Listed at 16 retailers as of October 30, 2026, with a 668% 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

0.51
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle30.2°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG542212263
Dimensions8.94 × 4.17 × 2.47 mm
L/W Ratio2.14
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
8.94 mm4.17 mm0.51 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG542212263
Side View
Table 64.0%Crown 30.2°Girdle: MED-STKPavilion 41°Culet: NoneDepth 59.2%

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: Oct 30
Current: $2,296 NZD|Low: $130 NZD|High: $2,310 NZD|Avg: $692 NZD|+0.4%
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
Retailer 14
Retailer 15
Retailer 16
October 31, 2026
Retailer 8$130 NZD
Retailer 11$220 NZD
Retailer 7$247 NZD
Retailer 16$255 NZD
Retailer 3$291 NZD
Retailer 13$291 NZD
Retailer 12$515 NZD
Retailer 14$523 NZD
Retailer 2$569 NZD
Retailer 9$660 NZD
Retailer 4$678 NZD
Retailer 15$878 NZD
Retailer 10$928 NZD
Retailer 5$980 NZD
Retailer 6$1,689 NZD
MOH London$2,296 NZD

42 data points across 16 retailers

16 retailers$220 NZD to $1,689 NZD

A
Cheapest Retailer
-
$220 NZD
$124 USD
A
Retailer 2
-
$247 NZD
$139 USD
View
Final sale: no returns
A
Retailer 3
-
$255 NZD
$144 USD
View
A
Retailer 4
-
$291 NZD
$164 USD
View
A
Retailer 5
-
$291 NZD
$164 USD
View
B+
Retailer 6
-
$515 NZD
$290 USD
View
B+
Retailer 7
-
$523 NZD
$295 USD
View
B
Retailer 8
-
$569 NZD
£252 GBP
View
B+
Retailer 9
-
$590 NZD
HK$2,600 HKD
View
B+
Retailer 10
-
$660 NZD
£293 GBP
View
B
Retailer 11
-
$678 NZD
$382 USD
View
B
Retailer 12
-
$878 NZD
$495 USD
View
B
Retailer 13
-
$928 NZD
$523 USD
View
B
Retailer 14
-
$980 NZD
$552 USD
View
B
Retailer 15
-
$1,689 NZD
$952 USD
View
Most Expensive
MOH London
LG542212263 · Oct 29
$2,296 NZD
£1,019 GBP
View
Price under review
15 more retailers have this diamond
Prices start from $220 NZDSave up to $1,469 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
0.51ct Marquise
$220 NZD