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Marquise|Lab Grown|IGI

0.51ct I SI1 Marquise Lab Grown Diamond

VG • I/SI1 • IGI LG440010794

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG440010794

Diamond specifications and retailer prices

From $383 CAD
$274 USD
As of October 30, 2026
Save $1,531 CAD (80%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $1,914 CAD 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG440010794 or 440010794. Listed at 10 retailers as of October 29, 2026, with prices from $383 to $1,914, a $1,531 spread on the same certified stone. MOH London lists it at $1,914. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.51
Carat
I
Color
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle30.7°
Pavilion angle42.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG440010794
Dimensions7.78 × 4.31 × 2.68 mm
L/W Ratio1.81
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
7.78 mm4.31 mm0.51 ctI / SI1
OriginLab Grown
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG440010794
Side View
Table 61.0%Crown 30.7°Girdle: THN-STKPavilion 42.6°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: $1,914 CAD|Low: $367 CAD|High: $1,928 CAD|Avg: $880 CAD|+0.5%
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$383 CAD
Retailer 11$444 CAD
Retailer 2$447 CAD
Retailer 8$475 CAD
Retailer 12$475 CAD
Retailer 3$698 CAD
Retailer 10$788 CAD
Retailer 5$883 CAD
Retailer 4$968 CAD
Retailer 6$1,460 CAD
Retailer 9$1,528 CAD
MOH London$1,914 CAD

20 data points across 12 retailers

10 retailers$383 CAD to $1,914 CAD

A
Cheapest Retailer
-
$383 CAD
$274 USD
B+
Retailer 2
-
$444 CAD
$318 USD
View
B+
Retailer 3
-
$447 CAD
$320 USD
View
Retailer 4
-
$475 CAD
$340 USD
View
Price last confirmed 7 days ago
B+
Retailer 5
-
$475 CAD
$340 USD
View
B
Retailer 6
-
$788 CAD
$564 USD
View
Retailer 7
-
$883 CAD
€602 EUR
View
Price last confirmed 7 days ago
B
Retailer 8
-
$1,460 CAD
$1,045 USD
View
B
Retailer 9
-
$1,528 CAD
$1,094 USD
View
Most Expensive
B
MOH London
LG440010794 · Oct 29
$1,914 CAD
£1,079 GBP
View
9 more retailers have this diamond
Prices start from $383 CADSave up to $1,531 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
$383 CAD