Marquise|Lab Grown|IGI

4.05ct E VS1 Marquise Lab Grown Diamond

VG • E/VS1 • IGI LG831618905

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG831618905

Diamond specifications and retailer prices

From $971 CAD
£548 GBP
As of October 30, 2026
Save $3,460 CAD (78%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $12,349 CAD at Brilliant Earth · As of October 22, 2026
View at Brilliant Earth

About this 4.05ct lab-grown marquise diamond

This 4.05ct lab-grown marquise sits in the three to five carat band, graded E colour (colourless) and VS1 clarity (very-slightly-included), with a very-good cut grade and certified by IGI LG831618905 or 831618905. Listed at 17 retailers as of October 29, 2026, with a 356% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

4.05
Carat
E
Color
VS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.2°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG831618905
Dimensions16.01 × 8.28 × 5.28 mm
L/W Ratio1.93
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
16.01 mm8.28 mm4.05 ctE / VS1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG831618905
Side View
Table 60.0%Crown 34.2°Girdle: STK-THKPavilion 40.7°Culet: NoneDepth 63.8%

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: $12,349 CAD|Low: $968 CAD|High: $12,349 CAD|Avg: $3,102 CAD
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
October 30, 2026
Retailer 2$971 CAD
Retailer 9$1,084 CAD
Retailer 4$1,369 CAD
Retailer 10$1,798 CAD
Retailer 17$1,824 CAD
Retailer 13$1,930 CAD
Retailer 12$2,389 CAD
Retailer 14$2,419 CAD
Retailer 8$2,502 CAD
Retailer 15$2,764 CAD
Retailer 16$3,491 CAD
Retailer 3$3,684 CAD
Retailer 6$3,828 CAD
Retailer 7$3,871 CAD
Retailer 11$4,432 CAD
Retailer 5$4,465 CAD
Brilliant Earth$12,349 CAD

23 data points across 17 retailers

17 retailers$971 CAD to $4,432 CAD

A
Cheapest Retailer
-
$971 CAD
£548 GBP
A
Retailer 2
-
$1,084 CAD
$776 USD
View
Final sale: no returns
A
Retailer 3
-
$1,369 CAD
$980 USD
View
A
Retailer 4
-
$1,798 CAD
£1,014 GBP
View
A
Retailer 5
-
$1,824 CAD
$1,306 USD
View
A
Retailer 6
-
$1,930 CAD
€1,316 EUR
View
A
Retailer 7
-
$2,389 CAD
ZAR 27,632 ZAR
View
Retailer 8
-
$2,419 CAD
A$2,664 AUD
View
Price last confirmed 9 days ago
B+
Retailer 9
-
$2,502 CAD
$1,791 USD
View
B+
Retailer 10
-
$2,764 CAD
$1,979 USD
View
B
Retailer 11
-
$3,491 CAD
£1,968 GBP
View
B+
Retailer 12
-
$3,684 CAD
$2,638 USD
View
B+
Retailer 13
-
$3,828 CAD
$2,740 USD
View
B+
Retailer 14
-
$3,871 CAD
$2,771 USD
View
B
Retailer 15
-
$4,432 CAD
£2,498 GBP
View
Retailer 16
-
$4,465 CAD
A$4,917 AUD
View
Price last confirmed 21 days ago
Most Expensive
Brilliant Earth
21799680A · Oct 22
$12,349 CAD
$8,840 USD
View
Price last confirmed 8 days ago
16 more retailers have this diamond
Prices start from $971 CADSave up to $3,460 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
4.05ct Marquise
$971 CAD