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Asscher|Lab Grown|IGI

3.09ct F SI1 Asscher Lab Grown Diamond

EX • F/SI1 • IGI LG849651174

Shape and cutting style on the report: Square emerald cut

Certificate IGI LG849651174

Diamond specifications and retailer prices

From £217 GBP
As of November 4, 2026
Save £1,722 GBP (89%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £1,939 GBP at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

About this 3.09ct lab-grown asscher diamond

This 3.09ct lab-grown asscher 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 LG849651174 or 849651174. Listed at 3 retailers as of November 4, 2026, with prices from £217 to £1,939, a £1,722 spread on the same certified stone. Brilliant Earth lists it at £1,939. 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

3.09
Carat
F
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.8°
Pavilion angle40°
OriginLab Grown
Grading LabIGI
CertificateIGI LG849651174
Dimensions7.98 × 7.83 × 5.39 mm
L/W Ratio1.02
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.98 mm7.83 mm3.09 ctF / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG849651174
Side View
Table 63.0%Crown 33.8°Girdle: MediumPavilion 40°Culet: NoneDepth 68.8%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 4
Current: £1,939 GBP|Low: £217 GBP|High: £1,939 GBP|Avg: £950 GBP
Brilliant Earth
Retailer 2
Retailer 3
November 6, 2026
Retailer 3£217 GBP
Retailer 2£471 GBP
Brilliant Earth£1,939 GBP

10 data points across 3 retailers

3 retailers£217 GBP to £1,939 GBP

A
Cheapest Retailer
-
£217 GBP
Final sale: no returns
A
Retailer 2
-
£471 GBP
View
Most Expensive
B
Brilliant Earth
22330009A · Nov 4
£1,939 GBP
$2,610 USD
View
2 more retailers have this diamond
Prices start from £217 GBPSave up to £1,722 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 Asscher
£217 GBP