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Marquise|Lab Grown|IGI

0.51ct H SI1 Marquise Lab Grown Diamond

ID • H/SI1 • IGI LG436047203

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG436047203

Diamond specifications and retailer prices

From $541 NZD
$305 USD
As of November 2, 2026
Save $2,149 NZD (80%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $2,691 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 LG436047203 or 436047203. Listed at 12 retailers as of November 1, 2026, with prices from $541 to $2,691, a $2,149 spread on the same certified stone. MOH London lists it at $2,691. 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 angle36.3°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG436047203
Dimensions7.72 × 4.22 × 2.68 mm
L/W Ratio1.83
Girdle conditionFaceted
Culet sizePointed
Top View
7.72 mm4.22 mm0.51 ctH / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG436047203
Side View
Table 58.0%Crown 36.3°Girdle: STK-THKPavilion 40.8°Culet: NoneDepth 63.5%

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: $2,691 NZD|Low: $520 NZD|High: $2,722 NZD|Avg: $1,331 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$541 NZD
Retailer 9$568 NZD
Retailer 3$607 NZD
Retailer 8$610 NZD
Retailer 15$628 NZD
Retailer 12$671 NZD
Retailer 16$671 NZD
Retailer 5$949 NZD
Retailer 14$1,095 NZD
Retailer 2$1,228 NZD
Retailer 6$1,320 NZD
Retailer 10$2,064 NZD
Retailer 13$2,158 NZD
Retailer 4$2,545 NZD
MOH London$2,691 NZD
Retailer 7$2,697 NZD

25 data points across 16 retailers

12 retailers$541 NZD to $2,691 NZD

A
Cheapest Retailer
-
$541 NZD
$305 USD
A
Retailer 2
-
$568 NZD
$320 USD
View
B+
Retailer 3
-
$607 NZD
$342 USD
View
Final sale: no returns
B+
Retailer 4
-
$628 NZD
$354 USD
View
Retailer 5
-
$671 NZD
$378 USD
View
Price last confirmed 8 days ago
B+
Retailer 6
-
$671 NZD
$378 USD
View
B
Retailer 7
-
$1,095 NZD
$617 USD
View
B
Retailer 8
-
$1,228 NZD
€659 EUR
View
B
Retailer 9
-
$2,064 NZD
$1,163 USD
View
B
Retailer 10
-
$2,158 NZD
$1,216 USD
View
B
Retailer 11
-
$2,545 NZD
$1,434 USD
View
Most Expensive
B
MOH London
LG436047203 · Nov 1
$2,691 NZD
£1,194 GBP
View
11 more retailers have this diamond
Prices start from $541 NZDSave up to $2,149 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
$541 NZD