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Radiant|Natural|GIA

1.21ct F SI1 Radiant Natural Diamond

FR • F/SI1 • GIA 5543193848

Certificate GIA 5543193848

Diamond specifications and retailer prices

From £2,245 GBP
As of November 5, 2026
Save £2,182 GBP (49%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £4,560 GBP at NZ Jewellers · As of September 21, 2026
View at NZ Jewellers

About this 1.21ct natural radiant diamond

This 1.21ct natural radiant sits in the classic one-carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 5543193848. Listed at 12 retailers as of November 5, 2026, with a 97% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.21
Carat
F
Colour
SI1
Clarity
Fair
Cut (retailer stated)

Specifications

Cut (retailer stated)Fair
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5543193848
Dimensions7.00 × 5.31 × 3.62 mm
L/W Ratio1.32
Top View
7.00 mm5.31 mm1.21 ctF / SI1
OriginNatural
CutFair
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5543193848
Side View
Table 65.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 68.2%

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 5
Current: £4,427 GBP|Low: £2,051 GBP|High: £4,427 GBP|Avg: £2,768 GBP|+8.8%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 7, 2026
Retailer 4£2,245 GBP
Retailer 5£2,302 GBP
Retailer 9£2,391 GBP
Retailer 2£2,481 GBP
Retailer 10£2,494 GBP
Retailer 6£2,527 GBP
Retailer 7£2,667 GBP
Retailer 3£2,964 GBP
Retailer 8£4,152 GBP
NZ Jewellers£4,427 GBP

36 data points across 10 retailers

12 retailers£2,245 GBP to £4,427 GBP

Retailer 1
-
£1,976 GBP
Price last confirmed 46 days ago
B+
Retailer 2
-
£2,245 GBP
View
B+
Retailer 3
-
£2,302 GBP
View
B
Retailer 4
-
£2,391 GBP
View
B
Retailer 5
-
£2,481 GBP
View
B
Retailer 6
-
£2,494 GBP
View
B
Retailer 7
-
£2,527 GBP
View
B
Retailer 8
-
£2,667 GBP
View
B
Retailer 9
-
£2,964 GBP
View
C
Retailer 10
-
£4,152 GBP
View
C
Retailer 11
-
£4,427 GBP
View
Most Expensive
NZ Jewellers
20c73f71-d6d3-4c18-b16e-ab05533a6ec4 · Sep 21
£4,560 GBP
$6,103 USD
View
Price last confirmed 46 days ago
11 more retailers have this diamond
Prices start from £2,245 GBPSave up to £2,182 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+
1.21ct Radiant
£2,245 GBP