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Radiant|Natural|GIA

1.20ct F SI2 Radiant Natural Diamond

VG • F/SI2 • GIA 1242054686

Certificate GIA 1242054686

Diamond specifications and retailer prices

From £2,143 GBP
As of November 4, 2026
Save £1,934 GBP (47%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £4,077 GBP at Helzberg Diamonds · As of November 6, 2026
View at Helzberg Diamonds

About this 1.2ct natural radiant diamond

This 1.2ct natural radiant sits in the classic one-carat band, graded F colour (colourless) and SI2 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 1242054686. Listed at 13 retailers as of November 4, 2026, with prices from £2,143 to £4,077, a £1,934 spread on the same certified stone. Helzberg Diamonds lists it at £4,077. 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
F
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1242054686
Dimensions7.20 × 5.32 × 3.63 mm
L/W Ratio1.35
Culet sizeNone
Top View
7.20 mm5.32 mm1.20 ctF / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1242054686
Side View
Table 67.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 68.4%

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 4
Current: £4,077 GBP|Low: £2,143 GBP|High: £4,077 GBP|Avg: £2,779 GBP
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 6, 2026
Retailer 11£2,143 GBP
Retailer 8£2,195 GBP
Retailer 13£2,311 GBP
Retailer 9£2,327 GBP
Retailer 7£2,486 GBP
Retailer 5£2,583 GBP
Retailer 3£2,734 GBP
Retailer 12£2,750 GBP
Retailer 4£2,809 GBP
Retailer 6£2,856 GBP
Retailer 2£2,973 GBP
Retailer 10£3,856 GBP
Helzberg Diamonds£4,077 GBP

33 data points across 13 retailers

13 retailers£2,143 GBP to £4,077 GBP

B+
Cheapest Retailer
-
£2,143 GBP
B+
Retailer 2
-
£2,195 GBP
View
B+
Retailer 3
-
£2,311 GBP
View
B+
Retailer 4
-
£2,327 GBP
View
B+
Retailer 5
-
£2,486 GBP
View
B+
Retailer 6
-
£2,583 GBP
View
B+
Retailer 7
-
£2,734 GBP
View
B+
Retailer 8
-
£2,750 GBP
View
B
Retailer 9
-
£2,809 GBP
View
B+
Retailer 10
-
£2,856 GBP
View
B+
Retailer 11
-
£2,973 GBP
View
B
Retailer 12
-
£3,856 GBP
View
Most Expensive
B
Helzberg Diamonds
XZRHIKIGLKMOM · Nov 6
£4,077 GBP
$5,457 USD
View
12 more retailers have this diamond
Prices start from £2,143 GBPSave up to £1,934 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
£2,143 GBP