Marquise|Lab Grown|IGI

4.05ct E VS1 Marquise Lab Grown Diamond

EX • E/VS1 • IGI LG818682405

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG818682405

Diamond specifications and retailer prices

From $1,000 CAD
$716 USD
As of October 30, 2026
Save $3,579 CAD (78%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $5,336 CAD at Rare Carat · As of October 18, 2026
View at Rare Carat

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 top-tier cut grade and certified by IGI LG818682405 or 818682405. Listed at 23 retailers as of October 29, 2026, with a 358% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

4.05
Carat
E
Color
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.1°
Pavilion angle40°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818682405
Dimensions17.19 × 8.39 × 4.98 mm
L/W Ratio2.05
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
17.19 mm8.39 mm4.05 ctE / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818682405
Side View
Table 61.0%Crown 31.1°Girdle: MED-STKPavilion 40°Culet: NoneDepth 59.4%

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: $5,336 CAD|Low: $968 CAD|High: $5,336 CAD|Avg: $2,560 CAD
Rare Carat
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
Retailer 18
Retailer 19
Retailer 20
Retailer 21
October 30, 2026
Retailer 6$1,000 CAD
Retailer 2$1,003 CAD
Retailer 3$1,088 CAD
Retailer 10$1,119 CAD
Retailer 20$1,159 CAD
Retailer 19$1,404 CAD
Retailer 16$1,741 CAD
Retailer 13$1,860 CAD
Retailer 18$1,883 CAD
Retailer 17$2,468 CAD
Retailer 12$2,504 CAD
Retailer 4$2,513 CAD
Retailer 7$2,857 CAD
Retailer 21$3,260 CAD
Retailer 9$3,598 CAD
Retailer 8$3,907 CAD
Retailer 11$3,998 CAD
Retailer 5$4,177 CAD
Retailer 14$4,455 CAD
Retailer 15$4,579 CAD
Rare Carat$5,336 CAD

26 data points across 21 retailers

23 retailers$1,000 CAD to $4,579 CAD

A
Cheapest Retailer
-
$1,000 CAD
$716 USD
A
Retailer 2
-
$1,003 CAD
£566 GBP
View
A
Retailer 3
-
$1,088 CAD
$779 USD
View
A
Retailer 4
-
$1,119 CAD
$801 USD
View
Final sale: no returns
A
Retailer 5
-
$1,159 CAD
$830 USD
View
Retailer 6
-
$1,169 CAD
$837 USD
View
Price last confirmed 13 days ago
A
Retailer 7
-
$1,404 CAD
$1,005 USD
View
A
Retailer 8
-
$1,741 CAD
$1,246 USD
View
A
Retailer 9
-
$1,860 CAD
£1,048 GBP
View
A
Retailer 10
-
$1,883 CAD
$1,348 USD
View
A
Retailer 11
-
$2,468 CAD
ZAR 28,547 ZAR
View
Retailer 12
-
$2,504 CAD
A$2,758 AUD
View
Price last confirmed 9 days ago
A
Retailer 13
-
$2,513 CAD
$1,799 USD
View
B+
Retailer 14
-
$2,857 CAD
$2,045 USD
View
B+
Retailer 15
-
$3,260 CAD
$2,334 USD
View
B+
Retailer 16
-
$3,598 CAD
£2,028 GBP
View
B+
Retailer 17
-
$3,907 CAD
SGD 3,780 SGD
View
B+
Retailer 18
-
$3,955 CAD
$2,831 USD
View
B+
Retailer 19
-
$3,998 CAD
$2,862 USD
View
B+
Retailer 20
-
$4,177 CAD
$2,990 USD
View
Retailer 21
-
$4,455 CAD
A$4,906 AUD
View
Price last confirmed 22 days ago
B
Retailer 22
-
$4,579 CAD
£2,581 GBP
View
Most Expensive
Rare Carat
PR-12609 · Oct 18
$5,336 CAD
$3,820 USD
View
Price last confirmed 12 days ago
22 more retailers have this diamond
Prices start from $1,000 CADSave up to $3,579 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
$1,000 CAD