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 $5,142 USD
As of October 28, 2026
Save $3,592 USD (41%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $9,862 USD 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 28, 2026, with a 70% 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
Color
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 28
Current: $5,480 USD|Low: $5,019 USD|High: $9,101 USD|Avg: $6,389 USD|-1.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 29, 2026
Retailer 6$5,142 USD
Retailer 2$5,290 USD
Retailer 9$5,442 USD
Retailer 1$5,480 USD
Retailer 7$5,896 USD
Retailer 8$6,052 USD
Retailer 4$6,433 USD
Retailer 5$7,180 USD
Retailer 3$8,734 USD

31 data points across 9 retailers

13 retailers$5,142 USD to $8,734 USD

A
Cheapest Retailer
-
$5,142 USD
A
Retailer 2
-
$5,290 USD
£4,165 GBP
View
A
Retailer 3
-
$5,442 USD
View
Final sale: no returns
A
Retailer 4
-
$5,480 USD
View
A
Retailer 5
-
$5,896 USD
View
Price last confirmed 13 days ago
A
Retailer 6
-
$5,896 USD
View
Price last confirmed 7 days ago
A
Retailer 7
-
$6,052 USD
View
A
Retailer 8
-
$6,433 USD
€6,127 EUR
View
A
Retailer 9
-
$6,803 USD
View
Price last confirmed 8 days ago
A
Retailer 10
-
$7,052 USD
View
Price last confirmed 40 days ago
A
Retailer 11
-
$7,180 USD
ZAR 115,992 ZAR
View
A
Retailer 12
-
$8,734 USD
£6,877 GBP
View
Most Expensive
A
NZ Jewellers
5e0377fb-cead-4d75-b8f3-7cc88ac6a101 · Oct 20
$9,862 USD
View
Price last confirmed 8 days ago
12 more retailers have this diamond
Prices start from $5,142 USDSave up to $3,592 USD

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
$5,142 USD