CaratHunter
Plans
Marquise|Lab Grown|IGI

4.05ct H VS1 Marquise Lab Grown Diamond

ID • H/VS1 • IGI LG805675448

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG805675448

Diamond specifications and retailer prices

From £521 GBP
As of November 1, 2026
Save £3,420 GBP (87%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £3,941 GBP at Brilliant Earth · As of October 31, 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 H colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG805675448 or 805675448. Listed at 11 retailers as of October 31, 2026, with prices from £521 to £3,941, a £3,420 spread on the same certified stone. Brilliant Earth lists it at £3,941. 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
H
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.2°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG805675448
Dimensions16.63 × 8.24 × 5.22 mm
L/W Ratio2.02
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
16.63 mm8.24 mm4.05 ctH / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG805675448
Side View
Table 58.0%Crown 36.2°Girdle: MED-STKPavilion 40.3°Culet: NoneDepth 63.3%

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: Nov 1
Current: £3,941 GBP|Low: £521 GBP|High: £3,941 GBP|Avg: £1,338 GBP
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 1, 2026
Retailer 2£521 GBP
Retailer 7£575 GBP
Retailer 3£734 GBP
Retailer 8£785 GBP
Retailer 9£931 GBP
Retailer 6£941 GBP
Retailer 4£947 GBP
Retailer 10£1,220 GBP
Retailer 11£1,539 GBP
Retailer 5£1,985 GBP
Brilliant Earth£3,941 GBP

12 data points across 11 retailers

11 retailers£521 GBP to £3,941 GBP

A
Cheapest Retailer
-
£521 GBP
A
Retailer 2
-
£575 GBP
$770 USD
View
B+
Retailer 3
-
£734 GBP
$984 USD
View
A
Retailer 4
-
£785 GBP
€1,002 EUR
View
A
Retailer 5
-
£931 GBP
$1,247 USD
View
A
Retailer 6
-
£941 GBP
ZAR 20,368 ZAR
View
A
Retailer 7
-
£947 GBP
A$1,953 AUD
View
A
Retailer 8
-
£1,220 GBP
$1,635 USD
View
B+
Retailer 9
-
£1,539 GBP
$2,062 USD
View
B+
Retailer 10
-
£1,985 GBP
View
Most Expensive
B
Brilliant Earth
22163598A · Oct 31
£3,941 GBP
$5,280 USD
View
10 more retailers have this diamond
Prices start from £521 GBPSave up to £3,420 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
£521 GBP