Round|Natural|IGI

1.09ct I I1 Round Natural Diamond

EX • I/I1

Diamond specifications and retailer prices

From £1,265 GBP
$1,695 USD
As of October 29, 2026
Save £2,140 GBP (63%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £3,406 GBP at NZ Jewellers · As of October 23, 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 I1 clarity (included), with a top-tier cut grade and certified by IGI. Listed at 10 retailers as of October 30, 2026, with a 169% 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
I1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabIGI
Dimensions6.67 × 6.72 × 4.02 mm
L/W Ratio1.01
Top View
6.67 mm6.72 mm1.09 ctI / I1
OriginNatural
CutExcellent
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateIGI
Side View
Table 56.0%CrownGirdle: THN-STKPavilionCulet: CHIDepth 60.1%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: £3,406 GBP|Low: £1,098 GBP|High: £3,406 GBP|Avg: £1,530 GBP|+15.2%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 29, 2026
Retailer 6£1,111 GBP
Retailer 7£1,235 GBP
Retailer 2£1,265 GBP
Retailer 4£1,265 GBP
Retailer 3£1,323 GBP
Retailer 5£1,460 GBP
NZ Jewellers£3,406 GBP

8 data points across 7 retailers

10 retailers£1,265 GBP to £3,406 GBP

Retailer 1
-
£1,265 GBP
$1,695 USD
Price last confirmed 10 days ago
B+
Retailer 2
-
£1,265 GBP
$1,695 USD
View
B+
Retailer 3
-
£1,265 GBP
$1,695 USD
View
Retailer 4
-
£1,265 GBP
$1,695 USD
View
Price last confirmed 8 days ago
Retailer 5
-
£1,323 GBP
$1,773 USD
View
Price last confirmed 10 days ago
B+
Retailer 6
-
£1,323 GBP
$1,773 USD
View
B
Retailer 7
-
£1,460 GBP
$1,956 USD
View
Retailer 8
-
£1,460 GBP
$1,956 USD
View
Price last confirmed 9 days ago
C
Retailer 9
-
£3,406 GBP
$4,563 USD
View
Most Expensive
NZ Jewellers
b76579df-700e-48f5-b2e0-45689a92e3b8 · Oct 23
£3,406 GBP
$4,563 USD
View
Price last confirmed 9 days ago
9 more retailers have this diamond
Prices start from £1,265 GBPSave up to £2,140 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.

B+
1.09ct Round
£1,265 GBP