CaratHunter
Plans
Marquise|Lab Grown|IGI

0.51ct H SI2 Marquise Lab Grown Diamond

ID • H/SI2 • IGI LG436045436

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG436045436

Diamond specifications and retailer prices

From $362 CAD
$259 USD
As of October 30, 2026
Save $1,439 CAD (80%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $1,801 CAD at MOH London · As of October 26, 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 SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG436045436 or 436045436. Listed at 11 retailers as of October 26, 2026, with prices from $362 to $1,801, a $1,439 spread on the same certified stone. MOH London lists it at $1,801. 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
Color
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle34.9°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG436045436
Dimensions7.66 × 4.26 × 2.65 mm
L/W Ratio1.80
Girdle conditionFaceted
Culet sizePointed
Cert comments
undefined
Top View
7.66 mm4.26 mm0.51 ctH / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG436045436
Side View
Table 57.0%Crown 34.9°Girdle: MED-STKPavilion 40.4°Culet: NoneDepth 62.2%

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: Oct 30
Current: $1,801 CAD|Low: $348 CAD|High: $1,820 CAD|Avg: $810 CAD|+0.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 30, 2026
Retailer 7$362 CAD
Retailer 3$405 CAD
Retailer 11$419 CAD
Retailer 2$447 CAD
Retailer 8$448 CAD
Retailer 12$448 CAD
Retailer 10$747 CAD
Retailer 5$843 CAD
Retailer 4$933 CAD
Retailer 6$1,379 CAD
Retailer 9$1,442 CAD
MOH London$1,801 CAD

23 data points across 12 retailers

11 retailers$362 CAD to $1,801 CAD

A
Cheapest Retailer
-
$362 CAD
$259 USD
A
Retailer 2
-
$405 CAD
$290 USD
View
Final sale: no returns
A
Retailer 3
-
$419 CAD
$300 USD
View
A
Retailer 4
-
$447 CAD
$320 USD
View
B+
Retailer 5
-
$448 CAD
$321 USD
View
B+
Retailer 6
-
$448 CAD
$321 USD
View
B
Retailer 7
-
$747 CAD
$535 USD
View
B
Retailer 8
-
$843 CAD
€575 EUR
View
B
Retailer 9
-
$1,379 CAD
$987 USD
View
B
Retailer 10
-
$1,442 CAD
$1,032 USD
View
Most Expensive
B
MOH London
LG436045436 · Oct 26
$1,801 CAD
£1,015 GBP
View
10 more retailers have this diamond
Prices start from $362 CADSave up to $1,439 CAD

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
$362 CAD