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Round|Natural|IGI

1.80ct I FL Round Natural Diamond

EX • I/FL • IGI 735528623

Shape and cutting style on the report: Round brilliant

Certificate IGI 735528623

Diamond specifications and retailer prices

From £5,092 GBP
As of November 5, 2026
Save £3,097 GBP (38%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £10,676 GBP at NZ Jewellers · As of September 26, 2026
View at NZ Jewellers

About this 1.8ct natural round diamond

This 1.8ct natural round sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI 735528623. Listed at 15 retailers as of November 4, 2026, with a 61% 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

1.80
Carat
I
Colour
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle40.4°
OriginNatural
Grading LabIGI
CertificateIGI 735528623
Dimensions7.64 × 7.69 × 4.85 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Top View
7.64 mm7.69 mm1.80 ctI / FL
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 735528623
Side View
Table 57.0%Crown 36.5°Girdle: Slightly ThickPavilion 40.4°Culet: NoneDepth 63.2%

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 5
Current: £5,092 GBP|Low: £5,092 GBP|High: £9,003 GBP|Avg: £6,645 GBP|-5.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 5, 2026
Retailer 1£5,092 GBP
Retailer 4£5,376 GBP
Retailer 2£5,538 GBP
Retailer 9£5,892 GBP
Retailer 8£6,352 GBP
Retailer 7£6,364 GBP
Retailer 5£6,585 GBP
Retailer 6£7,640 GBP
Retailer 3£8,189 GBP

40 data points across 9 retailers

15 retailers£5,092 GBP to £8,189 GBP

A
Cheapest Retailer
-
£5,092 GBP
A
Retailer 2
-
£5,376 GBP
View
A
Retailer 3
-
£5,538 GBP
View
A
Retailer 4
-
£6,352 GBP
View
A
Retailer 5
-
£6,364 GBP
View
Retailer 6
-
£6,383 GBP
View
Price last confirmed 49 days ago
Retailer 7
-
£6,383 GBP
View
Price last confirmed 28 days ago
Retailer 8
-
£6,481 GBP
View
Price last confirmed 37 days ago
A
Retailer 9
-
£6,585 GBP
View
Retailer 10
-
£7,365 GBP
View
Price last confirmed 27 days ago
Retailer 11
-
£7,365 GBP
View
Price last confirmed 44 days ago
A
Retailer 12
-
£7,640 GBP
View
B+
Retailer 13
-
£8,189 GBP
View
Retailer 14
-
£10,676 GBP
View
Price last confirmed 47 days ago
Most Expensive
NZ Jewellers
e9bc5ddb-d56b-4332-a872-a66b2c276358 · Sep 26
£10,676 GBP
$14,369 USD
View
Price last confirmed 39 days ago
14 more retailers have this diamond
Prices start from £5,092 GBPSave up to £3,097 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
1.80ct Round
£5,092 GBP