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Marquise|Lab Grown|IGI

1.78ct F VS1 Marquise Lab Grown Diamond

ID • F/VS1 • IGI LG840631245

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG840631245

Diamond specifications and retailer prices

From $429 CAD
$307 USD
As of October 30, 2026
Save $1,730 CAD (80%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $2,158 CAD at Reve Diamonds · As of November 1, 2026
View at Reve Diamonds

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 F colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG840631245 or 840631245. Listed at 18 retailers as of October 30, 2026, with prices from $429 to $2,158, a $1,730 spread on the same certified stone. Reve Diamonds lists it at $2,158. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.78
Carat
F
Color
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.1°
Pavilion angle39.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG840631245
Dimensions13.14 × 6.18 × 3.82 mm
L/W Ratio2.13
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
13.14 mm6.18 mm1.78 ctF / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG840631245
Side View
Table 57.0%Crown 34.1°Girdle: MED-STKPavilion 39.2°Culet: NoneDepth 61.8%

Caratlytics Score

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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: $2,154 CAD|Low: $429 CAD|High: $2,221 CAD|Avg: $1,197 CAD|-3.0%
Retailer 1
Retailer 2
Retailer 3
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Retailer 9
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Retailer 11
Retailer 12
Retailer 13
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Retailer 17
Retailer 18
Reve Diamonds
November 1, 2026
Retailer 9$429 CAD
Retailer 3$485 CAD
Retailer 7$532 CAD
Retailer 15$538 CAD
Retailer 12$628 CAD
Retailer 11$724 CAD
Retailer 14$754 CAD
Retailer 5$915 CAD
Retailer 10$928 CAD
Retailer 13$948 CAD
Retailer 17$989 CAD
Retailer 4$1,241 CAD
Retailer 6$1,538 CAD
Retailer 8$1,636 CAD
Retailer 16$1,727 CAD
Retailer 2$1,792 CAD
Retailer 18$2,065 CAD
Retailer 1$2,154 CAD
Reve Diamonds$2,158 CAD

28 data points across 19 retailers

18 retailers$429 CAD to $2,158 CAD

A
Cheapest Retailer
-
$429 CAD
$307 USD
A
Retailer 2
-
$485 CAD
$347 USD
View
Final sale: no returns
Retailer 3
-
$532 CAD
$381 USD
View
Price last confirmed 8 days ago
A
Retailer 4
-
$538 CAD
$385 USD
View
A
Retailer 5
-
$628 CAD
£354 GBP
View
B+
Retailer 6
-
$724 CAD
$518 USD
View
A
Retailer 7
-
$754 CAD
$540 USD
View
A
Retailer 8
-
$915 CAD
ZAR 10,583 ZAR
View
A
Retailer 9
-
$948 CAD
£535 GBP
View
A
Retailer 10
-
$989 CAD
$708 USD
View
A
Retailer 11
-
$1,241 CAD
A$1,367 AUD
View
B+
Retailer 12
-
$1,538 CAD
A$1,694 AUD
View
B
Retailer 13
-
$1,636 CAD
$1,171 USD
View
B+
Retailer 14
-
$1,727 CAD
$1,236 USD
View
B+
Retailer 15
-
$1,792 CAD
$1,283 USD
View
B
Retailer 16
-
$2,065 CAD
$1,478 USD
View
B
Retailer 17
-
$2,154 CAD
£1,214 GBP
View
Most Expensive
B
Reve Diamonds
8EE645827 · Nov 1
$2,158 CAD
$1,545 USD
View
17 more retailers have this diamond
Prices start from $429 CADSave up to $1,730 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
1.78ct Marquise
$429 CAD