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Marquise|Lab Grown|IGI

0.51ct H SI1 Marquise Lab Grown Diamond

ID • H/SI1 • IGI LG440011400

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG440011400

Diamond specifications and retailer prices

From $542 NZD
$305 USD
As of November 2, 2026
Save $2,153 NZD (80%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $2,695 NZD at MOH London · As of November 1, 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 H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG440011400 or 440011400. Listed at 12 retailers as of November 1, 2026, with prices from $542 to $2,695, a $2,153 spread on the same certified stone. MOH London lists it at $2,695. 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
H
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle35.3°
Pavilion angle39.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG440011400
Dimensions7.93 × 4.24 × 2.60 mm
L/W Ratio1.87
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
7.93 mm4.24 mm0.51 ctH / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG440011400
Side View
Table 55.5%Crown 35.3°Girdle: MED-STKPavilion 39.6°Culet: NoneDepth 61.3%

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 2
Current: $2,695 NZD|Low: $521 NZD|High: $2,727 NZD|Avg: $1,332 NZD
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
November 1, 2026
Retailer 11$542 NZD
Retailer 9$569 NZD
Retailer 3$608 NZD
Retailer 8$611 NZD
Retailer 15$629 NZD
Retailer 12$672 NZD
Retailer 16$672 NZD
Retailer 5$951 NZD
Retailer 14$1,097 NZD
Retailer 2$1,230 NZD
Retailer 6$1,322 NZD
Retailer 10$2,067 NZD
Retailer 13$2,161 NZD
Retailer 4$2,550 NZD
MOH London$2,695 NZD
Retailer 7$2,702 NZD

22 data points across 16 retailers

12 retailers$542 NZD to $2,695 NZD

A
Cheapest Retailer
-
$542 NZD
$305 USD
A
Retailer 2
-
$569 NZD
$320 USD
View
B+
Retailer 3
-
$608 NZD
$342 USD
View
Final sale: no returns
B+
Retailer 4
-
$629 NZD
$354 USD
View
Retailer 5
-
$672 NZD
$378 USD
View
Price last confirmed 8 days ago
B+
Retailer 6
-
$672 NZD
$378 USD
View
B
Retailer 7
-
$1,097 NZD
$617 USD
View
B
Retailer 8
-
$1,230 NZD
€659 EUR
View
B
Retailer 9
-
$2,067 NZD
$1,163 USD
View
B
Retailer 10
-
$2,161 NZD
$1,216 USD
View
B
Retailer 11
-
$2,550 NZD
$1,434 USD
View
Most Expensive
B
MOH London
LG440011400 · Nov 1
$2,695 NZD
£1,194 GBP
View
11 more retailers have this diamond
Prices start from $542 NZDSave up to $2,153 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
$542 NZD