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Radiant|Natural|GIA

1.26ct F SI2 Radiant Natural Diamond

EX • F/SI2 • GIA 5242091500

Certificate GIA 5242091500

Diamond specifications and retailer prices

From £1,348 GBP
As of November 6, 2026
Save £2,485 GBP (65%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £3,833 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.26ct natural radiant diamond

This 1.26ct natural radiant 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 stated by the retailer rather than the lab and certified by GIA 5242091500. Listed at 8 retailers as of November 5, 2026, with prices from £1,348 to £3,833, a £2,485 spread on the same certified stone. NZ Jewellers lists it at £3,833. 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

1.26
Carat
F
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryExcellent
FluorescenceVery Strong
Pavilion angle62.8°
OriginNatural
Grading LabGIA
CertificateGIA 5242091500
Dimensions7.13 × 5.14 × 3.59 mm
L/W Ratio1.39
Key to symbols
Crystal, Feather, Needle, Natural
Top View
7.13 mm5.14 mm1.26 ctF / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceVery Strong
CertificateGIA 5242091500
Side View
Table 65.0%CrownGirdle: STK-THKPavilion 62.8°Culet: NoneDepth 69.9%

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 6
Current: £3,833 GBP|Low: £1,339 GBP|High: £3,833 GBP|Avg: £2,283 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 7, 2026
Retailer 4£1,348 GBP
Retailer 3£1,802 GBP
Retailer 5£1,833 GBP
Retailer 8£1,875 GBP
Retailer 7£1,918 GBP
Retailer 6£2,784 GBP
Retailer 2£3,195 GBP
NZ Jewellers£3,833 GBP

22 data points across 8 retailers

8 retailers£1,348 GBP to £3,833 GBP

A
Cheapest Retailer
-
£1,348 GBP
A
Retailer 2
-
£1,802 GBP
View
A
Retailer 3
-
£1,833 GBP
View
A
Retailer 4
-
£1,875 GBP
View
A
Retailer 5
-
£1,918 GBP
View
B+
Retailer 6
-
£2,784 GBP
View
B+
Retailer 7
-
£3,195 GBP
View
Most Expensive
B
NZ Jewellers
f9a58dcb-ed1f-4345-b6ce-8078936cc0a9 · Nov 5
£3,833 GBP
$5,130 USD
View
7 more retailers have this diamond
Prices start from £1,348 GBPSave up to £2,485 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
1.26ct Radiant
£1,348 GBP