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Round|Natural|IGI

1.09ct I IF Round Natural Diamond

EX • I/IF • IGI 778651427

Shape and cutting style on the report: Round brilliant

Certificate IGI 778651427

Diamond specifications and retailer prices

From £1,805 GBP
₹230,282 INR
As of November 1, 2026
Save £2,805 GBP (61%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £4,610 GBP at NZ Jewellers · As of October 30, 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 I colour (near-colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI 778651427. Listed at 19 retailers as of October 30, 2026, with prices from £1,805 to £4,610, a £2,805 spread on the same certified stone. NZ Jewellers lists it at £4,610. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.09
Carat
I
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40.6°
OriginNatural
Grading LabIGI
CertificateIGI 778651427
Dimensions6.48 × 6.55 × 4.09 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Top View
6.48 mm6.55 mm1.09 ctI / IF
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 778651427
Side View
Table 55.0%Crown 35.5°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.7%

Caratlytics Score

How it works →
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 1
Current: £1,805 GBP|Low: £1,800 GBP|High: £3,832 GBP|Avg: £2,384 GBP|-1.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 1, 2026
Retailer 1£1,805 GBP
Retailer 3£1,975 GBP
Retailer 11£1,978 GBP
Retailer 9£2,034 GBP
Retailer 2£2,205 GBP
Retailer 10£2,205 GBP
Retailer 6£2,386 GBP
Retailer 8£2,554 GBP
Retailer 5£2,571 GBP
Retailer 7£2,710 GBP
Retailer 4£3,688 GBP

34 data points across 11 retailers

19 retailers£1,805 GBP to £4,610 GBP

A
Cheapest Retailer
-
£1,805 GBP
₹230,282 INR
A
Retailer 2
-
£1,975 GBP
$2,646 USD
View
A
Retailer 3
-
£1,978 GBP
$2,650 USD
View
A
Retailer 4
-
£2,034 GBP
$2,726 USD
View
Final sale: no returns
A
Retailer 5
-
£2,161 GBP
$2,896 USD
View
Retailer 6
-
£2,205 GBP
$2,955 USD
View
Price last confirmed 55 days ago
Retailer 7
-
£2,205 GBP
$2,955 USD
View
Price last confirmed 29 days ago
A
Retailer 8
-
£2,205 GBP
$2,955 USD
View
Retailer 9
-
£2,290 GBP
$3,068 USD
View
Price last confirmed 33 days ago
A
Retailer 10
-
£2,386 GBP
View
A
Retailer 11
-
£2,554 GBP
View
A
Retailer 12
-
£2,571 GBP
€3,281 EUR
View
Retailer 13
-
£2,612 GBP
$3,500 USD
View
Price last confirmed 56 days ago
Retailer 14
-
£2,612 GBP
$3,500 USD
View
Price last confirmed 33 days ago
A
Retailer 15
-
£2,710 GBP
ZAR 58,671 ZAR
View
B+
Retailer 16
-
£3,688 GBP
View
Retailer 17
-
£3,944 GBP
$5,285 USD
View
Price last confirmed 61 days ago
Retailer 18
-
£3,944 GBP
$5,285 USD
View
Price last confirmed 36 days ago
Most Expensive
B
NZ Jewellers
c028d8c0-c3d6-4dfc-a48f-a91af3848ce8 · Oct 30
£4,610 GBP
$6,177 USD
View
18 more retailers have this diamond
Prices start from £1,805 GBPSave up to £2,805 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
£1,805 GBP