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Marquise|Lab Grown|IGI

4.09ct D IF Marquise Lab Grown Diamond

VG • D/IF • IGI LG762544610

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG762544610

Diamond specifications and retailer prices

From £8,019 GBP
$10,745 USD
As of November 1, 2026
Save £22,101 GBP (73%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £30,120 GBP at Cape Diamonds · As of October 29, 2026
View at Cape Diamonds

About this 4.09ct lab-grown marquise diamond

This 4.09ct lab-grown marquise sits in the three to five carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI LG762544610 or 762544610. Listed at 13 retailers as of October 29, 2026, with prices from £8,019 to £30,120, a £22,101 spread on the same certified stone. Cape Diamonds lists it at £30,120. 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

4.09
Carat
D
Colour
IF
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.9°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG762544610
Dimensions16.54 × 8.41 × 5.24 mm
L/W Ratio1.97
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
16.54 mm8.41 mm4.09 ctD / IF
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG762544610
Side View
Table 61.0%Crown 34.9°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 62.3%

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: £30,120 GBP|Low: £7,142 GBP|High: £39,487 GBP|Avg: £19,378 GBP|-10.8%
Cape Diamonds
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
November 1, 2026
Retailer 10£8,019 GBP
Retailer 5£9,440 GBP
Retailer 6£9,783 GBP
Retailer 14£10,840 GBP
Retailer 11£12,686 GBP
Retailer 12£15,456 GBP
Retailer 8£15,571 GBP
Retailer 2£22,227 GBP
Retailer 13£23,165 GBP
Retailer 4£24,056 GBP
Retailer 9£24,085 GBP
Retailer 7£24,504 GBP
Cape Diamonds£30,120 GBP
Retailer 3£39,487 GBP

28 data points across 14 retailers

13 retailers£8,019 GBP to £30,120 GBP

A
Cheapest Retailer
-
£8,019 GBP
$10,745 USD
B+
Retailer 2
-
£9,440 GBP
$12,649 USD
View
B+
Retailer 3
-
£10,840 GBP
$14,525 USD
View
B+
Retailer 4
-
£12,686 GBP
$16,998 USD
View
B
Retailer 5
-
£15,456 GBP
$20,710 USD
View
B+
Retailer 6
-
£15,571 GBP
View
B
Retailer 7
-
£22,227 GBP
View
B
Retailer 8
-
£23,165 GBP
$31,038 USD
View
B
Retailer 9
-
£24,085 GBP
€30,735 EUR
View
B
Retailer 10
-
£24,504 GBP
A$50,512 AUD
View
Most Expensive
B
Cape Diamonds
cert_762544610 · Oct 29
£30,120 GBP
ZAR 651,988 ZAR
View
10 more retailers have this diamond
Prices start from £8,019 GBPSave up to £22,101 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
4.09ct Marquise
£8,019 GBP