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3.09ct F SI1 Round Lab Grown Diamond

ID • F/SI1 • GCAL 331110451

Shape and cutting style on the report: Round brilliant

Certificate GCAL 331110451

Diamond specifications and retailer prices

From £325 GBP
As of November 5, 2026
Save £1,527 GBP (82%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £1,851 GBP at MOH London · As of November 5, 2026
View at MOH London

About this 3.09ct lab-grown round diamond

This 3.09ct lab-grown round 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 GCAL 331110451. Listed at 16 retailers as of November 5, 2026, with prices from £325 to £1,851, a £1,527 spread on the same certified stone. MOH London lists it at £1,851. 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle40.6°
OriginLab Grown
Grading LabGCAL
CertificateGCAL 331110451
Dimensions9.37 × 9.42 × 5.72 mm
L/W Ratio1.01
Culet sizeNone
Top View
9.37 mm9.42 mm3.09 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGCAL 331110451
Side View
Table 57.0%Crown 34.5°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 60.9%

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 5
Current: £1,851 GBP|Low: £288 GBP|High: £1,866 GBP|Avg: £906 GBP|+22.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 6, 2026
Retailer 9£325 GBP
Retailer 5£372 GBP
Retailer 13£403 GBP
Retailer 10£574 GBP
Retailer 3£594 GBP
Retailer 2£597 GBP
Retailer 7£643 GBP
Retailer 6£1,187 GBP
Retailer 8£1,235 GBP
Retailer 12£1,430 GBP
Retailer 4£1,531 GBP
Retailer 11£1,713 GBP
MOH London£1,851 GBP

44 data points across 13 retailers

16 retailers£325 GBP to £1,851 GBP

Retailer 1
-
£300 GBP
Price last confirmed 44 days ago
A
Retailer 2
-
£325 GBP
View
Retailer 3
-
£337 GBP
View
Price last confirmed 44 days ago
Retailer 4
-
£368 GBP
View
Price last confirmed 45 days ago
A
Retailer 5
-
£403 GBP
View
A
Retailer 6
-
£574 GBP
View
B+
Retailer 7
-
£594 GBP
View
A
Retailer 8
-
£597 GBP
View
A
Retailer 9
-
£643 GBP
View
B+
Retailer 10
-
£1,187 GBP
View
B
Retailer 11
-
£1,235 GBP
View
Retailer 12
-
£1,322 GBP
View
Price last confirmed 46 days ago
B
Retailer 13
-
£1,430 GBP
View
B
Retailer 14
-
£1,531 GBP
View
B
Retailer 15
-
£1,713 GBP
View
Most Expensive
B
MOH London
331110451 · Nov 5
£1,851 GBP
View
15 more retailers have this diamond
Prices start from £325 GBPSave up to £1,527 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 Round
£325 GBP