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Round|Natural|IGI

1.00ct I IF Round Natural Diamond

EX • I/IF • IGI 754512322

Shape and cutting style on the report: Round brilliant

Certificate IGI 754512322

Diamond specifications and retailer prices

From £1,226 GBP
As of November 1, 2026
Save £2,189 GBP (64%) vs most expensive(unlock to see where)
28 retailers carry this diamond
Most expensive: £3,415 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1ct natural round diamond

This 1ct natural round sits in the classic one-carat band, graded I colour (near-colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI 754512322. Listed at 28 retailers as of November 1, 2026, with prices from £1,226 to £3,415, a £2,189 spread on the same certified stone. NZ Jewellers lists it at £3,415. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.00
Carat
I
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36.7°
Pavilion angle40.2°
OriginNatural
Grading LabIGI
CertificateIGI 754512322
Dimensions6.27 × 6.30 × 3.97 mm
L/W Ratio1.00
Girdle conditionFaceted
Top View
6.27 mm6.30 mm1.00 ctI / IF
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 754512322
Side View
Table 56.0%Crown 36.7°Girdle: MED-STKPavilion 40.2°Culet: NoneDepth 63.1%

Caratlytics Score

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

Price History

Last verified: Nov 1
Current: £3,415 GBP|Low: £1,226 GBP|High: £3,415 GBP|Avg: £1,925 GBP
NZ Jewellers
Retailer 2
Retailer 3
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Retailer 5
Retailer 6
Retailer 7
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Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
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Retailer 15
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Retailer 17
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Retailer 19
Retailer 20
November 5, 2026
Retailer 16£1,419 GBP
Retailer 8£1,476 GBP
Retailer 10£1,507 GBP
Retailer 17£1,587 GBP
Retailer 5£1,616 GBP
Retailer 3£1,633 GBP
Retailer 6£1,633 GBP
Retailer 19£1,644 GBP
Retailer 4£1,709 GBP
Retailer 20£1,736 GBP
Retailer 13£1,795 GBP
Retailer 7£1,831 GBP
Retailer 15£1,858 GBP
Retailer 11£1,885 GBP
Retailer 18£2,007 GBP
Retailer 2£2,015 GBP
Retailer 9£2,359 GBP
Retailer 12£2,503 GBP
Retailer 14£2,854 GBP
NZ Jewellers£3,415 GBP

30 data points across 20 retailers

28 retailers£1,226 GBP to £3,415 GBP

A
Cheapest Retailer
-
£1,226 GBP
A
Retailer 2
-
£1,419 GBP
View
A
Retailer 3
-
£1,476 GBP
View
A
Retailer 4
-
£1,507 GBP
View
Final sale: no returns
A
Retailer 5
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£1,587 GBP
View
A
Retailer 6
-
£1,616 GBP
View
A
Retailer 7
-
£1,633 GBP
View
A
Retailer 8
-
£1,633 GBP
View
A
Retailer 9
-
£1,644 GBP
View
A
Retailer 10
-
£1,709 GBP
View
Retailer 11
-
£1,722 GBP
View
Price last confirmed 18 days ago
A
Retailer 12
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£1,736 GBP
View
A
Retailer 13
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£1,795 GBP
View
A
Retailer 14
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£1,831 GBP
View
A
Retailer 15
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£1,856 GBP
View
A
Retailer 16
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£1,858 GBP
View
A
Retailer 17
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£1,863 GBP
View
Retailer 18
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£1,863 GBP
View
Price last confirmed 18 days ago
A
Retailer 19
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£1,885 GBP
View
Retailer 20
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£1,911 GBP
View
Price last confirmed 18 days ago
A
Retailer 21
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£1,952 GBP
View
A
Retailer 22
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£2,007 GBP
View
A
Retailer 23
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£2,015 GBP
View
Retailer 24
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£2,030 GBP
View
Price last confirmed 39 days ago
A
Retailer 25
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£2,359 GBP
View
A
Retailer 26
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£2,503 GBP
View
B+
Retailer 27
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£2,854 GBP
View
Most Expensive
B+
NZ Jewellers
5b153fc3-22d3-4005-807d-67631315773c · Nov 5
£3,415 GBP
$4,610 USD
View
27 more retailers have this diamond
Prices start from £1,226 GBPSave up to £2,189 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
1.00ct Round
£1,226 GBP