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Round|Natural|IGI

1.20ct K IF Round Natural Diamond

EX • K/IF • IGI 678521393

Shape and cutting style on the report: Round brilliant

Certificate IGI 678521393

Diamond specifications and retailer prices

From £1,227 GBP
As of November 6, 2026
Save £1,543 GBP (56%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £3,314 GBP at NZ Jewellers · As of October 3, 2026
View at NZ Jewellers

About this 1.2ct natural round diamond

This 1.2ct 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 678521393. Listed at 16 retailers as of November 4, 2026, with a 126% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.20
Carat
K
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle40.7°
OriginNatural
Grading LabIGI
CertificateIGI 678521393
Dimensions6.66 × 6.72 × 4.24 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Top View
6.66 mm6.72 mm1.20 ctK / IF
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 678521393
Side View
Table 57.0%Crown 36.5°Girdle: MED-STKPavilion 40.7°Culet: NoneDepth 63.4%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: £1,227 GBP|Low: £1,227 GBP|High: £2,810 GBP|Avg: £1,830 GBP|-2.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 1£1,227 GBP
Retailer 8£1,431 GBP
Retailer 7£1,603 GBP
Retailer 2£1,742 GBP
Retailer 3£1,821 GBP
Retailer 4£1,934 GBP
Retailer 6£2,090 GBP
Retailer 5£2,770 GBP

35 data points across 8 retailers

16 retailers£1,227 GBP to £2,770 GBP

A
Cheapest Retailer
-
£1,227 GBP
A
Retailer 2
-
£1,431 GBP
View
Retailer 3
-
£1,585 GBP
View
Price last confirmed 25 days ago
Retailer 4
-
£1,585 GBP
View
Price last confirmed 29 days ago
A
Retailer 5
-
£1,603 GBP
View
Retailer 6
-
£1,629 GBP
View
Price last confirmed 50 days ago
Retailer 7
-
£1,659 GBP
View
Price last confirmed 38 days ago
A
Retailer 8
-
£1,742 GBP
View
A
Retailer 9
-
£1,821 GBP
View
Retailer 10
-
£1,829 GBP
View
Price last confirmed 45 days ago
Retailer 11
-
£1,829 GBP
View
Price last confirmed 28 days ago
A
Retailer 12
-
£1,934 GBP
View
A
Retailer 13
-
£2,090 GBP
View
B+
Retailer 14
-
£2,770 GBP
View
Retailer 15
-
£3,314 GBP
View
Price last confirmed 46 days ago
Most Expensive
NZ Jewellers
a764d134-97bc-4a20-87c8-da7a348b5700 · Oct 3
£3,314 GBP
$4,436 USD
View
Price last confirmed 34 days ago
15 more retailers have this diamond
Prices start from £1,227 GBPSave up to £1,543 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
1.20ct Round
£1,227 GBP