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Marquise|Lab Grown|IGI

3.09ct D FL Marquise Lab Grown Diamond

EX • D/FL • IGI LG754594706

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG754594706

Diamond specifications and retailer prices

From £3,443 GBP
$4,613 USD
As of October 31, 2026
Save £11,543 GBP (77%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £14,986 GBP at With Clarity · As of October 31, 2026
View at With Clarity

About this 3.09ct lab-grown marquise diamond

This 3.09ct 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 LG754594706 or 754594706. Listed at 14 retailers as of October 31, 2026, with prices from £3,443 to £14,986, a £11,543 spread on the same certified stone. With Clarity lists it at £14,986. 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

3.09
Carat
D
Colour
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG754594706
Dimensions14.73 × 7.56 × 4.77 mm
L/W Ratio1.95
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
14.73 mm7.56 mm3.09 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG754594706
Side View
Table 63.0%Crown 35.5°Girdle: MED-STKPavilion 40.3°Culet: NoneDepth 63.1%

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 31
Current: £4,887 GBP|Low: £3,443 GBP|High: £17,622 GBP|Avg: £8,031 GBP|-14.9%
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
With Clarity
October 31, 2026
Retailer 13£3,443 GBP
Retailer 11£3,527 GBP
Retailer 3£4,729 GBP
Retailer 1£4,887 GBP
Retailer 10£5,739 GBP
Retailer 2£5,803 GBP
Retailer 8£6,189 GBP
Retailer 6£6,836 GBP
Retailer 4£7,052 GBP
Retailer 9£7,849 GBP
Retailer 7£8,755 GBP
Retailer 12£10,147 GBP
Retailer 5£13,444 GBP
With Clarity£14,986 GBP

39 data points across 14 retailers

14 retailers£3,443 GBP to £14,986 GBP

A
Cheapest Retailer
-
£3,443 GBP
$4,613 USD
A
Retailer 2
-
£3,527 GBP
$4,726 USD
View
B+
Retailer 3
-
£4,729 GBP
HK$49,500 HKD
View
B+
Retailer 4
-
£4,887 GBP
View
B+
Retailer 5
-
£5,739 GBP
$7,690 USD
View
B+
Retailer 6
-
£5,803 GBP
$7,775 USD
View
B+
Retailer 7
-
£6,189 GBP
€7,898 EUR
View
B+
Retailer 8
-
£6,836 GBP
$9,160 USD
View
B+
Retailer 9
-
£7,052 GBP
$9,449 USD
View
B+
Retailer 10
-
£7,849 GBP
View
B+
Retailer 11
-
£8,755 GBP
ZAR 189,502 ZAR
View
Retailer 12
-
£10,147 GBP
$13,596 USD
View
Price last confirmed 7 days ago
B
Retailer 13
-
£13,444 GBP
$18,013 USD
View
Most Expensive
B
With Clarity
754594706 · Oct 31
£14,986 GBP
$20,079 USD
View
13 more retailers have this diamond
Prices start from £3,443 GBPSave up to £11,543 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
3.09ct Marquise
£3,443 GBP