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Marquise|Lab Grown|IGI

0.51ct G SI1 Marquise Lab Grown Diamond

ID • G/SI1 • IGI LG532262804

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG532262804

Diamond specifications and retailer prices

From $173 CAD
$124 USD
As of October 30, 2026
Save $1,157 CAD (87%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $1,808 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 G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG532262804 or 532262804. 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
G
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle34.8°
Pavilion angle35.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG532262804
Dimensions8.55 × 4.05 × 2.34 mm
L/W Ratio2.11
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
8.55 mm4.05 mm0.51 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG532262804
Side View
Table 56.5%Crown 34.8°Girdle: MED-THKPavilion 35.2°Culet: NoneDepth 57.8%

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: $1,808 CAD|Low: $137 CAD|High: $1,820 CAD|Avg: $510 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
Retailer 13
November 1, 2026
Retailer 9$173 CAD
Retailer 5$194 CAD
Retailer 13$201 CAD
Retailer 3$229 CAD
Retailer 10$229 CAD
Retailer 6$391 CAD
Retailer 12$415 CAD
Retailer 2$448 CAD
Retailer 7$520 CAD
Retailer 4$534 CAD
Retailer 11$693 CAD
Retailer 8$732 CAD
MOH London$1,808 CAD

43 data points across 13 retailers

16 retailers$173 CAD to $1,330 CAD

A
Cheapest Retailer
-
$173 CAD
$124 USD
A
Retailer 2
-
$194 CAD
$139 USD
View
Final sale: no returns
A
Retailer 3
-
$201 CAD
$144 USD
View
Retailer 4
-
$229 CAD
$164 USD
View
Price last confirmed 7 days ago
A
Retailer 5
-
$229 CAD
$164 USD
View
B+
Retailer 6
-
$391 CAD
$280 USD
View
B+
Retailer 7
-
$415 CAD
$297 USD
View
B
Retailer 8
-
$429 CAD
HK$2,400 HKD
View
B
Retailer 9
-
$448 CAD
£253 GBP
View
B
Retailer 10
-
$520 CAD
£293 GBP
View
B
Retailer 11
-
$534 CAD
$382 USD
View
B
Retailer 12
-
$693 CAD
$496 USD
View
B
Retailer 13
-
$732 CAD
$524 USD
View
B
Retailer 14
-
$772 CAD
$552 USD
View
B
Retailer 15
-
$1,330 CAD
$952 USD
View
Most Expensive
MOH London
LG532262804 · Oct 29
$1,808 CAD
£1,019 GBP
View
Price under review
15 more retailers have this diamond
Prices start from $173 CADSave up to $1,157 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
$173 CAD