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Marquise|Lab Grown|IGI

4.01ct D FL Marquise Lab Grown Diamond

ID • D/FL • IGI LG780661584

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG780661584

Diamond specifications and retailer prices

From £5,038 GBP
$6,750 USD
As of October 30, 2026
Save £11,194 GBP (69%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £16,231 GBP at Frank Darling · As of October 31, 2026
View at Frank Darling

About this 4.01ct lab-grown marquise diamond

This 4.01ct lab-grown marquise sits in the three to five carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG780661584 or 780661584. Listed at 15 retailers as of October 30, 2026, with prices from £5,038 to £16,231, a £11,194 spread on the same certified stone. Frank Darling lists it at £16,231. 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

4.01
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.2°
Pavilion angle40.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG780661584
Dimensions15.59 × 8.03 × 5.30 mm
L/W Ratio1.94
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
15.59 mm8.03 mm4.01 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG780661584
Side View
Table 58.0%Crown 37.2°Girdle: THK-VTKPavilion 40.1°Culet: NoneDepth 66.0%

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 30
Current: £16,231 GBP|Low: £5,038 GBP|High: £35,667 GBP|Avg: £10,793 GBP|-11.4%
Frank Darling
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
November 1, 2026
Retailer 13£5,038 GBP
Retailer 11£5,135 GBP
Retailer 6£5,244 GBP
Retailer 15£5,306 GBP
Retailer 4£5,818 GBP
Retailer 10£6,717 GBP
Retailer 7£6,724 GBP
Retailer 8£6,773 GBP
Retailer 5£7,254 GBP
Retailer 9£7,355 GBP
Retailer 12£9,583 GBP
Retailer 3£11,357 GBP
Retailer 2£12,665 GBP
Frank Darling£16,231 GBP
Retailer 14£31,435 GBP

33 data points across 15 retailers

15 retailers£5,038 GBP to £16,231 GBP

A
Cheapest Retailer
-
£5,038 GBP
$6,750 USD
A
Retailer 2
-
£5,135 GBP
$6,881 USD
View
A
Retailer 3
-
£5,244 GBP
$7,026 USD
View
A
Retailer 4
-
£5,306 GBP
$7,109 USD
View
A
Retailer 5
-
£5,818 GBP
$7,795 USD
View
A
Retailer 6
-
£6,717 GBP
$9,000 USD
View
A
Retailer 7
-
£6,724 GBP
$9,010 USD
View
Final sale: no returns
A
Retailer 8
-
£6,773 GBP
$9,075 USD
View
A
Retailer 9
-
£7,254 GBP
$9,720 USD
View
A
Retailer 10
-
£7,355 GBP
$9,855 USD
View
B+
Retailer 11
-
£9,583 GBP
$12,840 USD
View
B+
Retailer 12
-
£11,357 GBP
€14,493 EUR
View
B+
Retailer 13
-
£12,665 GBP
View
Most Expensive
B
Frank Darling
P82B-2EL · Oct 31
£16,231 GBP
$21,748 USD
View
13 more retailers have this diamond
Prices start from £5,038 GBPSave up to £11,194 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
£5,038 GBP