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 $716 USD
As of October 30, 2026
Save $2,562 USD (78%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $3,820 USD 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: $3,820 USD|Low: $693 USD|High: $3,820 USD|Avg: $1,833 USD
Rare Carat
Retailer 2
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Retailer 11
Retailer 12
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Retailer 21
October 30, 2026
Retailer 6$716 USD
Retailer 2$718 USD
Retailer 3$779 USD
Retailer 10$801 USD
Retailer 20$830 USD
Retailer 19$1,005 USD
Retailer 16$1,246 USD
Retailer 13$1,331 USD
Retailer 18$1,348 USD
Retailer 17$1,767 USD
Retailer 12$1,793 USD
Retailer 4$1,799 USD
Retailer 7$2,045 USD
Retailer 21$2,334 USD
Retailer 9$2,576 USD
Retailer 8$2,797 USD
Retailer 11$2,862 USD
Retailer 5$2,990 USD
Retailer 14$3,189 USD
Retailer 15$3,278 USD
Rare Carat$3,820 USD

26 data points across 21 retailers

23 retailers$716 USD to $3,278 USD

A
Cheapest Retailer
-
$716 USD
A
Retailer 2
-
$718 USD
£566 GBP
View
A
Retailer 3
-
$779 USD
View
A
Retailer 4
-
$801 USD
View
Final sale: no returns
A
Retailer 5
-
$830 USD
View
Retailer 6
-
$837 USD
View
Price last confirmed 13 days ago
A
Retailer 7
-
$1,005 USD
View
A
Retailer 8
-
$1,246 USD
View
A
Retailer 9
-
$1,331 USD
£1,048 GBP
View
A
Retailer 10
-
$1,348 USD
View
A
Retailer 11
-
$1,767 USD
ZAR 28,547 ZAR
View
Retailer 12
-
$1,793 USD
A$2,758 AUD
View
Price last confirmed 8 days ago
A
Retailer 13
-
$1,799 USD
View
B+
Retailer 14
-
$2,045 USD
View
B+
Retailer 15
-
$2,334 USD
View
B+
Retailer 16
-
$2,576 USD
£2,028 GBP
View
B+
Retailer 17
-
$2,797 USD
SGD 3,780 SGD
View
B+
Retailer 18
-
$2,831 USD
View
B+
Retailer 19
-
$2,862 USD
View
B+
Retailer 20
-
$2,990 USD
View
Retailer 21
-
$3,189 USD
A$4,906 AUD
View
Price last confirmed 22 days ago
B
Retailer 22
-
$3,278 USD
£2,581 GBP
View
Most Expensive
Rare Carat
PR-12609 · Oct 18
$3,820 USD
View
Price last confirmed 12 days ago
22 more retailers have this diamond
Prices start from $716 USDSave up to $2,562 USD

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
$716 USD