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Marquise|Lab Grown|IGI

1.78ct G VS1 Marquise Lab Grown Diamond

EX • G/VS1 • IGI LG815645044

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG815645044

Diamond specifications and retailer prices

From $567 CAD
$406 USD
As of October 28, 2026
Save $947 CAD (63%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $2,051 CAD at Frank Darling · As of October 26, 2026
View at Frank Darling

About this 1.78ct lab-grown marquise diamond

This 1.78ct lab-grown marquise sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG815645044 or 815645044. Listed at 3 retailers as of October 26, 2026, with a 167% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.78
Carat
G
Color
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.3°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG815645044
Dimensions12.67 × 6.11 × 3.95 mm
L/W Ratio2.07
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
12.67 mm6.11 mm1.78 ctG / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG815645044
Side View
Table 60.0%Crown 37.3°Girdle: MED-STKPavilion 40.2°Culet: NoneDepth 64.6%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 28
Current: $2,051 CAD|Low: $380 CAD|High: $2,051 CAD|Avg: $1,100 CAD
Frank Darling
Retailer 2
Retailer 3
Retailer 4
October 28, 2026
Retailer 2$380 CAD
Retailer 3$567 CAD
Retailer 4$1,514 CAD
Frank Darling$2,051 CAD

10 data points across 4 retailers

3 retailers$567 CAD to $1,514 CAD

B+
Cheapest Retailer
-
$567 CAD
$406 USD
B+
Retailer 2
-
$1,514 CAD
$1,084 USD
View
Most Expensive
Frank Darling
100755802910KD · Oct 26
$2,051 CAD
$1,469 USD
View
Price last confirmed 7 days ago
2 more retailers have this diamond
Prices start from $567 CADSave up to $947 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.

B+
1.78ct Marquise
$567 CAD