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Round|Natural|IGI

1.09ct K IF Round Natural Diamond

EX • K/IF • IGI 778692415

Shape and cutting style on the report: Round brilliant

Certificate IGI 778692415

Diamond specifications and retailer prices

From £1,684 GBP
As of October 31, 2026
Save £355 GBP (17%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £3,177 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 K colour (faint-tinted) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI 778692415. Listed at 9 retailers as of October 31, 2026, with a relatively tight 21% spread, which is unusual at this carat range and suggests competitive pricing across the listings. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.09
Carat
K
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle41°
OriginNatural
Grading LabIGI
CertificateIGI 778692415
Dimensions6.54 × 6.57 × 4.14 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Top View
6.54 mm6.57 mm1.09 ctK / IF
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 778692415
Side View
Table 57.0%Crown 36.5°Girdle: MED-STKPavilion 41°Culet: NoneDepth 63.1%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 31
Current: £3,177 GBP|Low: £1,360 GBP|High: £3,177 GBP|Avg: £1,879 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
Retailer 13
Retailer 14
November 6, 2026
Retailer 7£1,365 GBP
Retailer 13£1,437 GBP
Retailer 11£1,519 GBP
Retailer 4£1,540 GBP
Retailer 6£1,540 GBP
Retailer 9£1,590 GBP
Retailer 3£1,664 GBP
Retailer 12£1,684 GBP
Retailer 10£1,687 GBP
Retailer 5£1,725 GBP
Retailer 2£2,039 GBP
Retailer 14£2,488 GBP
Retailer 8£2,676 GBP
NZ Jewellers£3,177 GBP

32 data points across 14 retailers

9 retailers£1,684 GBP to £2,039 GBP

Retailer 1
-
£1,365 GBP
Price last confirmed 7 days ago
Retailer 2
-
£1,519 GBP
View
Price last confirmed 8 days ago
Retailer 3
-
£1,590 GBP
View
Price last confirmed 8 days ago
A
Retailer 4
-
£1,684 GBP
View
A
Retailer 5
-
£1,687 GBP
View
A
Retailer 6
-
£2,039 GBP
View
Retailer 7
-
£2,676 GBP
View
Price last confirmed 8 days ago
Retailer 8
-
£3,177 GBP
View
Price last confirmed 66 days ago
Most Expensive
NZ Jewellers
ae161b0a-1ddb-40af-b98c-2b5978228565 · Oct 30
£3,177 GBP
$4,276 USD
View
Price last confirmed 7 days ago
8 more retailers have this diamond
Prices start from £1,684 GBPSave up to £355 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
£1,684 GBP