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1.26ct I SI2 Round Natural Diamond

GD • I/SI2 • IGI F5F34110

Certificate IGI F5F34110

Diamond specifications and retailer prices

From £2,416 GBP
€3,083 EUR
As of October 29, 2026
Save £1,202 GBP (33%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: £3,618 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 1.26ct natural round diamond

This 1.26ct natural round sits in the one-and-a-quarter to one-and-a-half carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a standard cut grade and certified by IGI F5F34110. Listed at 2 retailers as of October 29, 2026, with prices from £2,416 to £3,618, a £1,202 spread on the same certified stone. MOH London lists it at £3,618. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.26
Carat
I
Colour
SI2
Clarity
Good
Cut

Specifications

CutGood
PolishVery Good
SymmetryVery Good
FluorescenceFaint
Crown angle17°
Pavilion angle43°
OriginNatural
Grading LabIGI
CertificateIGI F5F34110
Dimensions6.65 × 6.73 × 4.39 mm
L/W Ratio1.01
Top View
6.65 mm6.73 mm1.26 ctI / SI2
OriginNatural
CutGood
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateIGI F5F34110
Side View
Table 57.0%Crown 17°GirdlePavilion 43°CuletDepth 65.6%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Oct 29
Current: £3,618 GBP|Low: £2,320 GBP|High: £3,642 GBP|Avg: £2,975 GBP|+0.4%
MOH London
Retailer 2
October 29, 2026
Retailer 2£2,416 GBP
MOH London£3,618 GBP

24 data points across 2 retailers

2 retailers£2,416 GBP to £3,618 GBP

B+
Cheapest Retailer
-
£2,416 GBP
€3,083 EUR
Most Expensive
C
MOH London
20F311C6F · Oct 29
£3,618 GBP
View
1 more retailer has this diamond
Prices start from £2,416 GBPSave up to £1,202 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.

B+
1.26ct Round
£2,416 GBP