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1.25ct F SI2 Round Natural Diamond

EX • F/SI2 • IGI 341882663

Shape and cutting style on the report: Round brilliant

Certificate IGI 341882663

Diamond specifications and retailer prices

From £3,047 GBP
As of November 4, 2026
Save £2,503 GBP (45%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £5,550 GBP at MOH London · As of November 4, 2026
View at MOH London

About this 1.25ct natural round diamond

This 1.25ct natural round sits in the one-and-a-quarter to one-and-a-half carat band, graded F colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI 341882663. Listed at 6 retailers as of November 4, 2026, with prices from £3,047 to £5,550, a £2,503 spread on the same certified stone. MOH London lists it at £5,550. 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

1.25
Carat
F
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
Crown angle36.3°
Pavilion angle41.2°
OriginNatural
Grading LabIGI
CertificateIGI 341882663
Dimensions6.89 × 6.82 × 4.32 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Top View
6.89 mm6.82 mm1.25 ctF / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateIGI 341882663
Side View
Table 56.5%Crown 36.3°Girdle: MediumPavilion 41.2°Culet: NoneDepth 63.0%

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 4
Current: £5,550 GBP|Low: £2,973 GBP|High: £5,631 GBP|Avg: £3,870 GBP|+2.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 5, 2026
Retailer 7£3,040 GBP
Retailer 6£3,047 GBP
Retailer 3£3,086 GBP
Retailer 5£3,151 GBP
Retailer 4£3,493 GBP
Retailer 2£3,922 GBP
Retailer 8£4,056 GBP
Retailer 9£5,398 GBP
MOH London£5,550 GBP

27 data points across 9 retailers

6 retailers£3,047 GBP to £5,550 GBP

B+
Cheapest Retailer
-
£3,047 GBP
A
Retailer 2
-
£3,086 GBP
View
B+
Retailer 3
-
£3,151 GBP
View
Retailer 4
-
£3,493 GBP
View
Price last confirmed 8 days ago
B
Retailer 5
-
£3,922 GBP
View
Most Expensive
B
MOH London
CB28E6171 · Nov 4
£5,550 GBP
View
5 more retailers have this diamond
Prices start from £3,047 GBPSave up to £2,503 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
1.25ct Round
£3,047 GBP