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Radiant|Natural|GIA

1.26ct H SI2 Radiant Natural Diamond

EX • H/SI2 • GIA 6555299354

Certificate GIA 6555299354

Diamond specifications and retailer prices

From £2,185 GBP
As of November 6, 2026
Save £2,560 GBP (54%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £4,744 GBP at MOH London · As of November 4, 2026
View at MOH London

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 H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6555299354. Listed at 12 retailers as of November 4, 2026, with prices from £2,185 to £4,744, a £2,560 spread on the same certified stone. MOH London lists it at £4,744. 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
H
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle45.74°
OriginNatural
Grading LabGIA
CertificateGIA 6555299354
Dimensions7.55 × 5.39 × 3.64 mm
L/W Ratio1.40
Key to symbols
Cloud, Twinning Wisp, Feather, Crystal, Needle
Top View
7.55 mm5.39 mm1.26 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6555299354
Side View
Table 66.0%Crown 45.74°Girdle: MED-STKPavilionCulet: NoneDepth 67.5%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £4,744 GBP|Low: £2,185 GBP|High: £5,233 GBP|Avg: £3,051 GBP|-9.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 7, 2026
Retailer 3£2,185 GBP
Retailer 10£2,185 GBP
Retailer 12£2,760 GBP
Retailer 9£2,802 GBP
Retailer 8£2,921 GBP
Retailer 11£2,921 GBP
Retailer 2£2,943 GBP
Retailer 7£3,018 GBP
Retailer 4£3,221 GBP
Retailer 5£3,310 GBP
Retailer 6£4,108 GBP
MOH London£4,744 GBP

45 data points across 12 retailers

12 retailers£2,185 GBP to £4,744 GBP

A
Cheapest Retailer
-
£2,185 GBP
A
Retailer 2
-
£2,185 GBP
View
B+
Retailer 3
-
£2,760 GBP
View
B+
Retailer 4
-
£2,802 GBP
View
B+
Retailer 5
-
£2,899 GBP
View
B+
Retailer 6
-
£2,921 GBP
View
B+
Retailer 7
-
£2,921 GBP
View
B+
Retailer 8
-
£2,943 GBP
View
B+
Retailer 9
-
£3,018 GBP
View
B+
Retailer 10
-
£3,310 GBP
View
B
Retailer 11
-
£4,108 GBP
View
Most Expensive
B
MOH London
CEF3EF61C · Nov 4
£4,744 GBP
View
11 more retailers have this diamond
Prices start from £2,185 GBPSave up to £2,560 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
£2,185 GBP