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Marquise|Lab Grown|IGI

4.05ct E VS1 Marquise Lab Grown Diamond

EX • E/VS1 • IGI LG797693506

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG797693506

Diamond specifications and retailer prices

From £627 GBP
$835 USD
As of October 27, 2026
Save £5,966 GBP (90%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: £6,593 GBP at Brilliant Earth · As of October 28, 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 top-tier cut grade and certified by IGI LG797693506 or 797693506. Listed at 23 retailers as of October 27, 2026, with prices from £627 to £6,593, a £5,966 spread on the same certified stone. Brilliant Earth lists it at £6,593. 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
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.2°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG797693506
Dimensions16.12 × 8.24 × 5.27 mm
L/W Ratio1.96
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
16.12 mm8.24 mm4.05 ctE / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG797693506
Side View
Table 61.0%Crown 36.2°Girdle: MED-STKPavilion 40.7°Culet: NoneDepth 64.0%

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 27
Current: £6,593 GBP|Low: £602 GBP|High: £6,796 GBP|Avg: £1,787 GBP|-3.0%
Brilliant Earth
Retailer 2
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Retailer 4
Retailer 5
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Retailer 20
October 29, 2026
Retailer 4£627 GBP
Retailer 20£683 GBP
Retailer 14£697 GBP
Retailer 17£728 GBP
Retailer 19£728 GBP
Retailer 12£749 GBP
Retailer 3£875 GBP
Retailer 11£910 GBP
Retailer 10£1,017 GBP
Retailer 2£1,233 GBP
Retailer 18£1,672 GBP
Retailer 13£1,709 GBP
Retailer 16£1,719 GBP
Retailer 5£2,258 GBP
Retailer 8£2,276 GBP
Retailer 6£2,285 GBP
Retailer 9£2,497 GBP
Retailer 15£2,728 GBP
Retailer 7£5,572 GBP
Brilliant Earth£6,593 GBP

39 data points across 20 retailers

23 retailers£627 GBP to £6,593 GBP

A
Cheapest Retailer
-
£627 GBP
$835 USD
A
Retailer 2
-
£683 GBP
$909 USD
View
A
Retailer 3
-
£697 GBP
View
Retailer 4
-
£728 GBP
$969 USD
View
Price last confirmed 12 days ago
A
Retailer 5
-
£728 GBP
$969 USD
View
A
Retailer 6
-
£749 GBP
$998 USD
View
Final sale: no returns
A
Retailer 7
-
£875 GBP
$1,165 USD
View
A
Retailer 8
-
£910 GBP
$1,212 USD
View
A
Retailer 9
-
£1,017 GBP
$1,354 USD
View
A
Retailer 10
-
£1,065 GBP
$1,418 USD
View
A
Retailer 11
-
£1,233 GBP
View
B+
Retailer 12
-
£1,672 GBP
$2,227 USD
View
B+
Retailer 13
-
£1,709 GBP
ZAR 36,775 ZAR
View
Retailer 14
-
£1,719 GBP
A$3,522 AUD
View
Price last confirmed 8 days ago
B+
Retailer 15
-
£2,220 GBP
View
B+
Retailer 16
-
£2,258 GBP
$3,007 USD
View
B+
Retailer 17
-
£2,276 GBP
$3,031 USD
View
B+
Retailer 18
-
£2,285 GBP
$3,043 USD
View
Retailer 19
-
£2,497 GBP
A$5,115 AUD
View
Price last confirmed 21 days ago
B
Retailer 20
-
£2,728 GBP
View
B
Retailer 21
-
£2,862 GBP
$3,812 USD
View
B
Retailer 22
-
£5,572 GBP
$7,420 USD
View
Most Expensive
B
Brilliant Earth
20120425A · Oct 28
£6,593 GBP
$8,780 USD
View
22 more retailers have this diamond
Prices start from £627 GBPSave up to £5,966 GBP

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
£627 GBP