Round|Natural|IGI

1.09ct E IF Round Natural Diamond

EX • E/IF • IGI 811697518

Shape and cutting style on the report: Round brilliant

Certificate IGI 811697518

Diamond specifications and retailer prices

From £3,838 GBP
$5,142 USD
As of October 30, 2026
Save £2,618 GBP (41%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £7,360 GBP at NZ Jewellers · As of October 20, 2026
View at NZ Jewellers

About this 1.09ct natural round diamond

This 1.09ct natural round sits in the classic one-carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI 811697518. Listed at 13 retailers as of October 30, 2026, with a 68% 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

1.09
Carat
E
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle34.3°
Pavilion angle40.9°
OriginNatural
Grading LabIGI
CertificateIGI 811697518
Dimensions6.60 × 6.65 × 4.11 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
IDEAL CUT ROUND BRILLIANT
Top View
6.60 mm6.65 mm1.09 ctE / IF
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 811697518
Side View
Table 54.0%Crown 34.3°Girdle: THN-MEDPavilion 40.9°CuletDepth 62.0%

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: Oct 30
Current: £7,360 GBP|Low: £3,746 GBP|High: £7,629 GBP|Avg: £5,032 GBP|-3.5%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 1, 2026
Retailer 10£3,838 GBP
Retailer 2£3,925 GBP
Retailer 8£4,044 GBP
Retailer 9£4,090 GBP
Retailer 11£4,400 GBP
Retailer 7£4,498 GBP
Retailer 6£4,787 GBP
Retailer 3£5,077 GBP
Retailer 5£5,384 GBP
Retailer 4£6,456 GBP
NZ Jewellers£7,360 GBP

34 data points across 11 retailers

13 retailers£3,838 GBP to £6,456 GBP

A
Cheapest Retailer
-
£3,838 GBP
$5,142 USD
A
Retailer 2
-
£3,925 GBP
View
A
Retailer 3
-
£4,044 GBP
$5,419 USD
View
Final sale: no returns
A
Retailer 4
-
£4,090 GBP
$5,480 USD
View
Retailer 5
-
£4,400 GBP
$5,896 USD
View
Price last confirmed 16 days ago
Retailer 6
-
£4,400 GBP
$5,896 USD
View
Price last confirmed 10 days ago
A
Retailer 7
-
£4,498 GBP
$6,027 USD
View
A
Retailer 8
-
£4,787 GBP
€6,109 EUR
View
Retailer 9
-
£5,077 GBP
$6,803 USD
View
Price last confirmed 11 days ago
Retailer 10
-
£5,263 GBP
$7,052 USD
View
Price last confirmed 43 days ago
A
Retailer 11
-
£5,384 GBP
ZAR 116,538 ZAR
View
A
Retailer 12
-
£6,456 GBP
View
Most Expensive
NZ Jewellers
5e0377fb-cead-4d75-b8f3-7cc88ac6a101 · Oct 20
£7,360 GBP
$9,862 USD
View
Price last confirmed 11 days ago
12 more retailers have this diamond
Prices start from £3,838 GBPSave up to £2,618 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
1.09ct Round
£3,838 GBP