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Radiant|Natural|GIA

1.20ct E SI1 Radiant Natural Diamond

VG • E/SI1 • GIA 5456634140

Certificate GIA 5456634140

Diamond specifications and retailer prices

From £3,391 GBP
As of November 6, 2026
Save £3,141 GBP (48%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £6,532 GBP at MOH London · As of November 4, 2026
View at MOH London

About this 1.2ct natural radiant diamond

This 1.2ct natural radiant sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 5456634140. Listed at 10 retailers as of November 4, 2026, with prices from £3,391 to £6,532, a £3,141 spread on the same certified stone. MOH London lists it at £6,532. 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

1.20
Carat
E
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle51.19°
Pavilion angle31.73°
OriginNatural
Grading LabGIA
CertificateGIA 5456634140
Dimensions6.39 × 5.20 × 3.73 mm
L/W Ratio1.23
Top View
6.39 mm5.20 mm1.20 ctE / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 5456634140
Side View
Table 68.0%Crown 51.19°Girdle: Very ThickPavilion 31.73°Culet: NoneDepth 71.8%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £6,532 GBP|Low: £3,391 GBP|High: £6,629 GBP|Avg: £4,452 GBP|+2.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 7, 2026
Retailer 3£3,391 GBP
Retailer 10£3,586 GBP
Retailer 6£3,597 GBP
Retailer 8£3,691 GBP
Retailer 9£4,112 GBP
Retailer 7£4,118 GBP
Retailer 2£4,375 GBP
Retailer 4£4,627 GBP
Retailer 5£5,017 GBP
MOH London£6,532 GBP

45 data points across 10 retailers

10 retailers£3,391 GBP to £6,532 GBP

B+
Cheapest Retailer
-
£3,391 GBP
B
Retailer 2
-
£3,586 GBP
View
B
Retailer 3
-
£3,597 GBP
View
B
Retailer 4
-
£3,691 GBP
View
Retailer 5
-
£4,112 GBP
View
Price last confirmed 9 days ago
Retailer 6
-
£4,118 GBP
View
Price last confirmed 29 days ago
B
Retailer 7
-
£4,375 GBP
View
B
Retailer 8
-
£4,627 GBP
View
B
Retailer 9
-
£5,017 GBP
View
Most Expensive
B
MOH London
E1279AAA1 · Nov 4
£6,532 GBP
View
9 more retailers have this diamond
Prices start from £3,391 GBPSave up to £3,141 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+
1.20ct Radiant
£3,391 GBP