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Round|Natural|IGI

1.00ct I IF Round Natural Diamond

EX • I/IF • IGI 628465765

Shape and cutting style on the report: Round brilliant

Certificate IGI 628465765

Diamond specifications and retailer prices

From £1,670 GBP
As of November 4, 2026
Save £1,559 GBP (48%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £3,864 GBP at NZ Jewellers · As of October 3, 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 628465765. Listed at 20 retailers as of November 4, 2026, with a 93% 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

1.00
Carat
I
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle34.9°
Pavilion angle41.2°
OriginNatural
Grading LabIGI
CertificateIGI 628465765
Dimensions6.40 × 6.37 × 4.00 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Top View
6.40 mm6.37 mm1.00 ctI / IF
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 628465765
Side View
Table 57.0%Crown 34.9°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 62.7%

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 4
Current: £1,979 GBP|Low: £1,689 GBP|High: £3,277 GBP|Avg: £2,148 GBP|+0.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 5, 2026
Retailer 5£1,689 GBP
Retailer 9£1,706 GBP
Retailer 2£1,848 GBP
Retailer 10£1,848 GBP
Retailer 1£1,979 GBP
Retailer 8£2,124 GBP
Retailer 4£2,149 GBP
Retailer 7£2,272 GBP
Retailer 6£2,298 GBP
Retailer 3£3,229 GBP

42 data points across 10 retailers

20 retailers£1,670 GBP to £3,229 GBP

A
Cheapest Retailer
-
£1,670 GBP
A
Retailer 2
-
£1,670 GBP
View
A
Retailer 3
-
£1,689 GBP
View
A
Retailer 4
-
£1,706 GBP
View
Final sale: no returns
A
Retailer 5
-
£1,730 GBP
View
Retailer 6
-
£1,848 GBP
View
Price last confirmed 49 days ago
Retailer 7
-
£1,848 GBP
View
Price last confirmed 28 days ago
Retailer 8
-
£1,848 GBP
View
Price last confirmed 28 days ago
A
Retailer 9
-
£1,952 GBP
View
A
Retailer 10
-
£1,979 GBP
View
Retailer 11
-
£2,133 GBP
View
Price last confirmed 47 days ago
Retailer 12
-
£2,133 GBP
View
Price last confirmed 52 days ago
A
Retailer 13
-
£2,149 GBP
View
A
Retailer 14
-
£2,272 GBP
View
A
Retailer 15
-
£2,298 GBP
View
A
Retailer 16
-
£2,664 GBP
View
B+
Retailer 17
-
£3,229 GBP
View
Retailer 18
-
£3,864 GBP
View
Price last confirmed 52 days ago
Retailer 19
-
£3,864 GBP
View
Price last confirmed 47 days ago
Most Expensive
NZ Jewellers
05bdaad3-e279-4800-ba5d-947c24b57f84 · Oct 3
£3,864 GBP
$5,217 USD
View
Price last confirmed 33 days ago
19 more retailers have this diamond
Prices start from £1,670 GBPSave up to £1,559 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
£1,670 GBP