Marquise|Lab Grown|IGI

4.01ct H VVS1 Marquise Lab Grown Diamond

VG • H/VVS1 • IGI LG840639413

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG840639413

Diamond specifications and retailer prices

From £505 GBP
$676 USD
As of November 1, 2026
Save £3,549 GBP (88%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £4,053 GBP at Helzberg Diamonds · As of November 1, 2026
View at Helzberg Diamonds

About this 4.01ct lab-grown marquise diamond

This 4.01ct lab-grown marquise sits in the three to five carat band, graded H colour (near-colourless) and VVS1 clarity (very-very-slightly-included), with a very-good cut grade and certified by IGI LG840639413 or 840639413. Listed at 5 retailers as of November 1, 2026, with prices from £505 to £4,053, a £3,549 spread on the same certified stone. Helzberg Diamonds lists it at £4,053. 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

4.01
Carat
H
Colour
VVS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.7°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG840639413
Dimensions15.95 × 8.20 × 5.29 mm
L/W Ratio1.95
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
15.95 mm8.20 mm4.01 ctH / VVS1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG840639413
Side View
Table 61.0%Crown 37.7°Girdle: STK-THKPavilion 40.3°Culet: NoneDepth 64.5%

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: Nov 1
Current: £4,053 GBP|Low: £505 GBP|High: £4,918 GBP|Avg: £2,716 GBP
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 2, 2026
Retailer 4£505 GBP
Retailer 2£913 GBP
Retailer 3£2,851 GBP
Retailer 5£3,948 GBP
Helzberg Diamonds£4,053 GBP

29 data points across 5 retailers

5 retailers£505 GBP to £4,053 GBP

A
Cheapest Retailer
-
£505 GBP
$676 USD
Final sale: no returns
A
Retailer 2
-
£913 GBP
View
B+
Retailer 3
-
£2,851 GBP
$3,820 USD
View
Retailer 4
-
£3,948 GBP
$5,290 USD
View
Price last confirmed 18 days ago
Most Expensive
B
Helzberg Diamonds
ZXZOKGMJPKHJ · Nov 1
£4,053 GBP
$5,431 USD
View
4 more retailers have this diamond
Prices start from £505 GBPSave up to £3,549 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
4.01ct Marquise
£505 GBP