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 $695 USD
£548 GBP
As of October 30, 2026
Save $2,477 USD (78%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $8,840 USD 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

How it works →
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: $8,840 USD|Low: $693 USD|High: $8,840 USD|Avg: $2,220 USD
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
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Retailer 17
October 30, 2026
Retailer 2$695 USD
Retailer 9$776 USD
Retailer 4$980 USD
Retailer 10$1,287 USD
Retailer 17$1,306 USD
Retailer 13$1,382 USD
Retailer 12$1,710 USD
Retailer 14$1,732 USD
Retailer 8$1,791 USD
Retailer 15$1,979 USD
Retailer 16$2,499 USD
Retailer 3$2,638 USD
Retailer 6$2,740 USD
Retailer 7$2,771 USD
Retailer 11$3,172 USD
Retailer 5$3,196 USD
Brilliant Earth$8,840 USD

23 data points across 17 retailers

17 retailers$695 USD to $3,172 USD

A
Cheapest Retailer
-
$695 USD
£548 GBP
A
Retailer 2
-
$776 USD
View
Final sale: no returns
A
Retailer 3
-
$980 USD
View
A
Retailer 4
-
$1,287 USD
£1,014 GBP
View
A
Retailer 5
-
$1,306 USD
View
A
Retailer 6
-
$1,382 USD
€1,316 EUR
View
A
Retailer 7
-
$1,710 USD
ZAR 27,632 ZAR
View
Retailer 8
-
$1,732 USD
A$2,664 AUD
View
Price last confirmed 9 days ago
B+
Retailer 9
-
$1,791 USD
View
B+
Retailer 10
-
$1,979 USD
View
B
Retailer 11
-
$2,499 USD
£1,968 GBP
View
B+
Retailer 12
-
$2,638 USD
View
B+
Retailer 13
-
$2,740 USD
View
B+
Retailer 14
-
$2,771 USD
View
B
Retailer 15
-
$3,172 USD
£2,498 GBP
View
Retailer 16
-
$3,196 USD
A$4,917 AUD
View
Price last confirmed 21 days ago
Most Expensive
Brilliant Earth
21799680A · Oct 22
$8,840 USD
View
Price last confirmed 7 days ago
16 more retailers have this diamond
Prices start from $695 USDSave up to $2,477 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
$695 USD