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Round|Natural|GIA

1.21ct F IF Round Natural Diamond

EX • F/IF • GIA 1558915853

Certificate GIA 1558915853

Diamond specifications and retailer prices

From £7,142 GBP
As of November 5, 2026
Save £4,074 GBP (36%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £11,216 GBP at NZ Jewellers · As of November 7, 2026
View at NZ Jewellers

About this 1.21ct natural round diamond

This 1.21ct natural round sits in the classic one-carat band, graded F colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by GIA 1558915853. Listed at 8 retailers as of November 7, 2026, with prices from £7,142 to £11,216, a £4,074 spread on the same certified stone. NZ Jewellers lists it at £11,216. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.21
Carat
F
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 1558915853
Dimensions6.77 × 6.81 × 4.21 mm
L/W Ratio1.01
Girdle conditionSlightly Thick
Top View
6.77 mm6.81 mm1.21 ctF / IF
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1558915853
Side View
Table 57.0%Crown 35°GirdlePavilion 40.8°CuletDepth 61.9%

Caratlytics Score

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

Price History

Last verified: Nov 5
Current: £11,216 GBP|Low: £7,142 GBP|High: £11,373 GBP|Avg: £8,616 GBP|-1.4%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 7, 2026
Retailer 3£7,142 GBP
Retailer 7£7,142 GBP
Retailer 5£7,208 GBP
Retailer 8£7,434 GBP
Retailer 6£8,047 GBP
Retailer 4£8,171 GBP
Retailer 9£9,305 GBP
Retailer 2£10,454 GBP
NZ Jewellers£11,216 GBP

38 data points across 9 retailers

8 retailers£7,142 GBP to £11,216 GBP

B+
Cheapest Retailer
-
£7,142 GBP
B+
Retailer 2
-
£7,142 GBP
View
B+
Retailer 3
-
£7,208 GBP
View
Retailer 4
-
£7,434 GBP
View
Price last confirmed 15 days ago
B+
Retailer 5
-
£8,047 GBP
View
B+
Retailer 6
-
£8,171 GBP
View
B
Retailer 7
-
£10,454 GBP
View
Most Expensive
B
NZ Jewellers
864bdc8c-98db-49da-98dc-90366f90c9bd · Nov 7
£11,216 GBP
$15,013 USD
View
7 more retailers have this diamond
Prices start from £7,142 GBPSave up to £4,074 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 Round
£7,142 GBP