Round|Natural|IGI

1.09ct I IF Round Natural Diamond

EX • I/IF • IGI 803629118

Shape and cutting style on the report: Round brilliant

Certificate IGI 803629118

Diamond specifications and retailer prices

From £1,791 GBP
$2,400 USD
As of October 31, 2026
Save £1,712 GBP (49%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £4,265 GBP at NZ Jewellers · As of September 28, 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 803629118. Listed at 17 retailers as of October 31, 2026, with a 96% 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
I
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.4°
Pavilion angle41.7°
OriginNatural
Grading LabIGI
CertificateIGI 803629118
Dimensions6.53 × 6.56 × 4.12 mm
L/W Ratio1.00
Girdle conditionFaceted
Top View
6.53 mm6.56 mm1.09 ctI / IF
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 803629118
Side View
Table 59.0%Crown 34.4°Girdle: MED-STKPavilion 41.7°Culet: NoneDepth 63.0%

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 31
Current: £4,265 GBP|Low: £1,791 GBP|High: £4,265 GBP|Avg: £2,457 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 1, 2026
Retailer 9£1,791 GBP
Retailer 5£1,829 GBP
Retailer 7£1,926 GBP
Retailer 4£2,040 GBP
Retailer 11£2,106 GBP
Retailer 6£2,163 GBP
Retailer 8£2,341 GBP
Retailer 3£2,389 GBP
Retailer 10£2,458 GBP
Retailer 12£2,878 GBP
Retailer 2£3,503 GBP
NZ Jewellers£4,265 GBP

43 data points across 12 retailers

17 retailers£1,791 GBP to £3,503 GBP

A
Cheapest Retailer
-
£1,791 GBP
$2,400 USD
A
Retailer 2
-
£1,829 GBP
$2,450 USD
View
A
Retailer 3
-
£1,926 GBP
$2,581 USD
View
Retailer 4
-
£2,040 GBP
$2,733 USD
View
Price last confirmed 30 days ago
Retailer 5
-
£2,040 GBP
$2,733 USD
View
Price last confirmed 16 days ago
A
Retailer 6
-
£2,106 GBP
$2,822 USD
View
Retailer 7
-
£2,118 GBP
$2,838 USD
View
Price last confirmed 32 days ago
A
Retailer 8
-
£2,145 GBP
$2,875 USD
View
A
Retailer 9
-
£2,163 GBP
View
A
Retailer 10
-
£2,341 GBP
View
Retailer 11
-
£2,354 GBP
$3,154 USD
View
Price last confirmed 33 days ago
A
Retailer 12
-
£2,389 GBP
€3,049 EUR
View
A
Retailer 13
-
£2,458 GBP
ZAR 53,207 ZAR
View
A
Retailer 14
-
£2,878 GBP
View
B+
Retailer 15
-
£3,503 GBP
View
Retailer 16
-
£4,265 GBP
$5,714 USD
View
Price last confirmed 11 days ago
Most Expensive
NZ Jewellers
c267e8ba-927e-4014-893b-e67ef534324c · Sep 28
£4,265 GBP
$5,714 USD
View
Price last confirmed 34 days ago
16 more retailers have this diamond
Prices start from £1,791 GBPSave up to £1,712 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
£1,791 GBP