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Radiant|Natural|GIA

1.20ct F SI1 Radiant Natural Diamond

ID • F/SI1 • GIA 2556242987

Certificate GIA 2556242987

Diamond specifications and retailer prices

From £3,721 GBP
As of November 6, 2026
Save £2,663 GBP (42%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £7,287 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.2ct natural radiant diamond

This 1.2ct natural radiant sits in the classic one-carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2556242987. Listed at 11 retailers as of November 6, 2026, with a 72% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.20
Carat
F
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2556242987
Dimensions8.01 × 4.95 × 3.41 mm
L/W Ratio1.62
Culet sizeNone
Top View
8.01 mm4.95 mm1.20 ctF / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2556242987
Side View
Table 66.0%CrownGirdle: ThickPavilionCulet: NoneDepth 68.8%

Caratlytics Score

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B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £7,287 GBP|Low: £3,873 GBP|High: £7,287 GBP|Avg: £5,247 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 7, 2026
Retailer 3£3,873 GBP
Retailer 5£4,208 GBP
Retailer 7£4,227 GBP
Retailer 6£4,303 GBP
Retailer 10£4,387 GBP
Retailer 8£4,525 GBP
Retailer 2£4,634 GBP
Retailer 9£5,316 GBP
Retailer 4£6,384 GBP
NZ Jewellers£7,287 GBP

36 data points across 10 retailers

11 retailers£3,721 GBP to £6,384 GBP

B
Cheapest Retailer
-
£3,721 GBP
Retailer 2
-
£3,873 GBP
View
B
Retailer 3
-
£4,208 GBP
View
B
Retailer 4
-
£4,227 GBP
View
B
Retailer 5
-
£4,303 GBP
View
Retailer 6
-
£4,387 GBP
View
Price last confirmed 34 days ago
B
Retailer 7
-
£4,525 GBP
View
Retailer 8
-
£4,634 GBP
View
B
Retailer 9
-
£5,316 GBP
View
B
Retailer 10
-
£6,384 GBP
View
Most Expensive
NZ Jewellers
8dff9ef4-0ec0-42f9-87a1-6430ce89f376 · Nov 5
£7,287 GBP
$9,754 USD
View
Price under review
10 more retailers have this diamond
Prices start from £3,721 GBPSave up to £2,663 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
£3,721 GBP