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Round|Natural|IGI

1.21ct K IF Round Natural Diamond

EX • K/IF • IGI 627493598

Shape and cutting style on the report: Round brilliant

Certificate IGI 627493598

Diamond specifications and retailer prices

From £1,342 GBP
As of November 4, 2026
Save £2,280 GBP (63%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £3,622 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 IGI 627493598. Listed at 17 retailers as of November 4, 2026, with prices from £1,342 to £3,622, a £2,280 spread on the same certified stone. NZ Jewellers lists it at £3,622. 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
FluorescenceNone
Crown angle35.2°
Pavilion angle40.6°
OriginNatural
Grading LabIGI
CertificateIGI 627493598
Dimensions6.84 × 6.80 × 4.23 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
IDEAL CUT ROUND BRILLIANT
Top View
6.84 mm6.80 mm1.21 ctK / IF
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 627493598
Side View
Table 56.0%Crown 35.2°Girdle: MediumPavilion 40.6°Culet: NoneDepth 62.1%

Caratlytics Score

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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 4
Current: £3,622 GBP|Low: £1,342 GBP|High: £3,622 GBP|Avg: £1,853 GBP|+11.4%
NZ Jewellers
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 9£1,342 GBP
Retailer 13£1,363 GBP
Retailer 5£1,422 GBP
Retailer 3£1,485 GBP
Retailer 4£1,508 GBP
Retailer 11£1,553 GBP
Retailer 2£1,621 GBP
Retailer 12£1,713 GBP
Retailer 6£1,717 GBP
Retailer 7£1,812 GBP
Retailer 8£2,015 GBP
Retailer 10£2,595 GBP
NZ Jewellers£3,622 GBP

33 data points across 13 retailers

17 retailers£1,342 GBP to £3,622 GBP

A
Cheapest Retailer
-
£1,342 GBP
A
Retailer 2
-
£1,363 GBP
View
A
Retailer 3
-
£1,422 GBP
View
Retailer 4
-
£1,437 GBP
View
Price last confirmed 102 days ago
A
Retailer 5
-
£1,485 GBP
View
Retailer 6
-
£1,508 GBP
View
Price last confirmed 44 days ago
Retailer 7
-
£1,508 GBP
View
Price last confirmed 8 days ago
A
Retailer 8
-
£1,553 GBP
View
A
Retailer 9
-
£1,621 GBP
View
A
Retailer 10
-
£1,713 GBP
View
A
Retailer 11
-
£1,717 GBP
View
Retailer 12
-
£1,740 GBP
View
Price last confirmed 45 days ago
A
Retailer 13
-
£1,812 GBP
View
A
Retailer 14
-
£2,015 GBP
View
B+
Retailer 15
-
£2,595 GBP
View
Retailer 16
-
£3,153 GBP
View
Price last confirmed 46 days ago
Most Expensive
B
NZ Jewellers
daaf4f74-7634-47ea-9170-01f35eb10bc4 · Nov 5
£3,622 GBP
$4,848 USD
View
16 more retailers have this diamond
Prices start from £1,342 GBPSave up to £2,280 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
£1,342 GBP