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Round|Natural|GIA

1.21ct K IF Round Natural Diamond

EX • K/IF • GIA 5556800658

Certificate GIA 5556800658

Diamond specifications and retailer prices

From £1,626 GBP
As of November 6, 2026
Save £2,983 GBP (65%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £4,609 GBP at NZ Jewellers · As of November 5, 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 K colour (faint-tinted) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by GIA 5556800658. Listed at 9 retailers as of November 5, 2026, with prices from £1,626 to £4,609, a £2,983 spread on the same certified stone. NZ Jewellers lists it at £4,609. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.21
Carat
K
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 5556800658
Dimensions6.72 × 6.77 × 4.21 mm
L/W Ratio1.01
Top View
6.72 mm6.77 mm1.21 ctK / IF
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 5556800658
Side View
Table 58.0%CrownGirdle: Slightly ThickPavilion 40.6°Culet: NoneDepth 62.5%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £4,609 GBP|Low: £1,626 GBP|High: £4,682 GBP|Avg: £2,663 GBP|+9.5%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 9£1,626 GBP
Retailer 8£1,986 GBP
Retailer 6£2,205 GBP
Retailer 7£2,251 GBP
Retailer 2£2,253 GBP
Retailer 3£2,260 GBP
Retailer 4£2,531 GBP
Retailer 5£3,677 GBP
NZ Jewellers£4,609 GBP

38 data points across 9 retailers

9 retailers£1,626 GBP to £4,609 GBP

A
Cheapest Retailer
-
£1,626 GBP
A
Retailer 2
-
£1,986 GBP
View
A
Retailer 3
-
£2,205 GBP
View
A
Retailer 4
-
£2,251 GBP
View
A
Retailer 5
-
£2,253 GBP
View
A
Retailer 6
-
£2,260 GBP
View
A
Retailer 7
-
£2,531 GBP
View
B+
Retailer 8
-
£3,677 GBP
View
Most Expensive
B
NZ Jewellers
d4a2d80d-02a2-405c-b5bc-e92a39e7fa91 · Nov 5
£4,609 GBP
$6,169 USD
View
8 more retailers have this diamond
Prices start from £1,626 GBPSave up to £2,983 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.

A
1.21ct Round
£1,626 GBP