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Marquise|Lab Grown|IGI

4.01ct D FL Marquise Lab Grown Diamond

ID • D/FL • IGI LG797643200

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG797643200

Diamond specifications and retailer prices

From £7,909 GBP
$10,597 USD
As of October 31, 2026
Save £18,669 GBP (70%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £26,578 GBP at Taylor and Hart · As of October 31, 2026
View at Taylor and Hart

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 LG797643200 or 797643200. Listed at 19 retailers as of October 31, 2026, with prices from £7,909 to £26,578, a £18,669 spread on the same certified stone. Taylor and Hart lists it at £26,578. 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 angle34.5°
Pavilion angle39.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG797643200
Dimensions16.82 × 8.30 × 5.04 mm
L/W Ratio2.03
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
16.82 mm8.30 mm4.01 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG797643200
Side View
Table 59.0%Crown 34.5°Girdle: MED-STKPavilion 39.4°Culet: NoneDepth 60.7%

Caratlytics Score

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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 31
Current: £15,640 GBP|Low: £6,228 GBP|High: £23,822 GBP|Avg: £13,364 GBP|-10.7%
Retailer 1
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 8£8,255 GBP
Retailer 14£8,452 GBP
Retailer 3£8,517 GBP
Retailer 4£8,551 GBP
Retailer 15£8,593 GBP
Retailer 2£8,669 GBP
Retailer 11£10,135 GBP
Retailer 5£12,250 GBP
Retailer 6£13,534 GBP
Retailer 13£13,810 GBP
Retailer 9£14,262 GBP
Retailer 12£14,320 GBP
Retailer 1£15,640 GBP
Retailer 10£18,201 GBP
Retailer 7£23,822 GBP

38 data points across 15 retailers

19 retailers£7,909 GBP to £26,578 GBP

Retailer 1
-
£7,372 GBP
$9,877 USD
Price last confirmed 24 days ago
Retailer 2
-
£7,666 GBP
$10,272 USD
View
Price last confirmed 33 days ago
A
Retailer 3
-
£7,909 GBP
$10,597 USD
View
Retailer 4
-
£8,013 GBP
$10,737 USD
View
Price last confirmed 31 days ago
A
Retailer 5
-
£8,255 GBP
$11,061 USD
View
Final sale: no returns
A
Retailer 6
-
£8,452 GBP
$11,325 USD
View
A
Retailer 7
-
£8,517 GBP
$11,412 USD
View
Retailer 8
-
£8,551 GBP
$11,457 USD
View
Price last confirmed 29 days ago
A
Retailer 9
-
£8,593 GBP
$11,514 USD
View
Retailer 10
-
£8,669 GBP
$11,615 USD
View
Price last confirmed 18 days ago
B+
Retailer 11
-
£10,135 GBP
View
B+
Retailer 12
-
£12,250 GBP
View
B+
Retailer 13
-
£13,810 GBP
View
B+
Retailer 14
-
£14,262 GBP
$19,110 USD
View
B+
Retailer 15
-
£14,320 GBP
€18,274 EUR
View
B+
Retailer 16
-
£15,640 GBP
$20,956 USD
View
B+
Retailer 17
-
£18,201 GBP
ZAR 393,970 ZAR
View
B
Retailer 18
-
£23,822 GBP
$31,919 USD
View
Most Expensive
B
Taylor and Hart
VQDU9HB · Oct 31
£26,578 GBP
$35,611 USD
View
18 more retailers have this diamond
Prices start from £7,909 GBPSave up to £18,669 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
£7,909 GBP