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Marquise|Lab Grown|IGI

3.08ct F SI1 Marquise Lab Grown Diamond

EX • F/SI1 • IGI LG838651560

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG838651560

Diamond specifications and retailer prices

From £285 GBP
As of November 6, 2026
Save £1,770 GBP (86%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £2,055 GBP at Brilliant Earth · As of November 6, 2026
View at Brilliant Earth

About this 3.08ct lab-grown marquise diamond

This 3.08ct lab-grown marquise sits in the three to five carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG838651560 or 838651560. Listed at 3 retailers as of November 6, 2026, with prices from £285 to £2,055, a £1,770 spread on the same certified stone. Brilliant Earth lists it at £2,055. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

3.08
Carat
F
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.8°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG838651560
Dimensions15.00 × 7.42 × 4.74 mm
L/W Ratio2.02
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
15.00 mm7.42 mm3.08 ctF / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG838651560
Side View
Table 61.0%Crown 37.8°Girdle: MED-STKPavilion 40.3°Culet: NoneDepth 63.9%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: £2,055 GBP|Low: £285 GBP|High: £2,055 GBP|Avg: £1,189 GBP
Brilliant Earth
Retailer 2
Retailer 3
November 5, 2026
Retailer 3£285 GBP
Retailer 2£587 GBP
Brilliant Earth£2,055 GBP

36 data points across 3 retailers

3 retailers£285 GBP to £2,055 GBP

A
Cheapest Retailer
-
£285 GBP
Final sale: no returns
A
Retailer 2
-
£587 GBP
View
Most Expensive
B
Brilliant Earth
21552984A · Nov 6
£2,055 GBP
$2,750 USD
View
2 more retailers have this diamond
Prices start from £285 GBPSave up to £1,770 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
3.08ct Marquise
£285 GBP