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Marquise|Lab Grown|IGI

4.05ct E VS1 Marquise Lab Grown Diamond

ID • E/VS1 • IGI LG825693506

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG825693506

Diamond specifications and retailer prices

From £511 GBP
As of October 29, 2026
Save £1,583 GBP (76%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £2,899 GBP at Rare Carat · As of October 7, 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 LG825693506 or 825693506. Listed at 17 retailers as of October 28, 2026, with a 310% 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
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.1°
Pavilion angle38.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG825693506
Dimensions16.80 × 8.44 × 4.99 mm
L/W Ratio1.99
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
16.80 mm8.44 mm4.05 ctE / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG825693506
Side View
Table 63.0%Crown 35.1°Girdle: MED-STKPavilion 38.7°Culet: NoneDepth 59.1%

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 29
Current: £2,899 GBP|Low: £511 GBP|High: £2,899 GBP|Avg: £1,509 GBP
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
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Retailer 17
October 29, 2026
Retailer 13£511 GBP
Retailer 2£568 GBP
Retailer 11£721 GBP
Retailer 10£939 GBP
Retailer 17£959 GBP
Retailer 3£963 GBP
Retailer 14£1,253 GBP
Retailer 8£1,303 GBP
Retailer 6£1,342 GBP
Retailer 5£1,518 GBP
Retailer 12£1,831 GBP
Retailer 7£1,922 GBP
Retailer 4£1,956 GBP
Retailer 16£2,031 GBP
Retailer 15£2,094 GBP
Retailer 9£2,388 GBP
Rare Carat£2,899 GBP

27 data points across 17 retailers

17 retailers£511 GBP to £2,094 GBP

A
Cheapest Retailer
-
£511 GBP
A
Retailer 2
-
£568 GBP
$756 USD
View
Final sale: no returns
A
Retailer 3
-
£721 GBP
$960 USD
View
A
Retailer 4
-
£939 GBP
View
A
Retailer 5
-
£959 GBP
$1,277 USD
View
A
Retailer 6
-
£963 GBP
€1,221 EUR
View
A
Retailer 7
-
£1,253 GBP
ZAR 26,961 ZAR
View
Retailer 8
-
£1,303 GBP
A$2,670 AUD
View
Price last confirmed 9 days ago
A
Retailer 9
-
£1,342 GBP
$1,787 USD
View
B+
Retailer 10
-
£1,518 GBP
$2,021 USD
View
B+
Retailer 11
-
£1,831 GBP
View
B+
Retailer 12
-
£1,922 GBP
$2,560 USD
View
B+
Retailer 13
-
£1,956 GBP
$2,605 USD
View
B+
Retailer 14
-
£2,031 GBP
$2,705 USD
View
B+
Retailer 15
-
£2,094 GBP
$2,789 USD
View
Retailer 16
-
£2,388 GBP
View
Price last confirmed 11 days ago
Most Expensive
Rare Carat
DGD-DNG-21648 · Oct 7
£2,899 GBP
$3,860 USD
View
Price last confirmed 22 days ago
16 more retailers have this diamond
Prices start from £511 GBPSave up to £1,583 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
£511 GBP