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Round|Natural|IGI

1.03ct I IF Round Natural Diamond

EX • I/IF • IGI 811673474

Shape and cutting style on the report: Round brilliant

Certificate IGI 811673474

Diamond specifications and retailer prices

From £1,610 GBP
As of October 30, 2026
Save £2,137 GBP (57%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £3,747 GBP at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.03ct natural round diamond

This 1.03ct 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 811673474. Listed at 8 retailers as of October 30, 2026, with prices from £1,610 to £3,747, a £2,137 spread on the same certified stone. NZ Jewellers lists it at £3,747. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.03
Carat
I
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36.4°
Pavilion angle40.7°
OriginNatural
Grading LabIGI
CertificateIGI 811673474
Dimensions6.36 × 6.39 × 4.03 mm
L/W Ratio1.00
Girdle conditionFaceted
Top View
6.36 mm6.39 mm1.03 ctI / IF
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 811673474
Side View
Table 57.0%Crown 36.4°Girdle: Slightly ThickPavilion 40.7°CuletDepth 63.2%

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 30
Current: £3,747 GBP|Low: £1,605 GBP|High: £3,747 GBP|Avg: £2,334 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 2, 2026
Retailer 4£1,610 GBP
Retailer 3£1,793 GBP
Retailer 6£1,793 GBP
Retailer 7£1,876 GBP
Retailer 8£2,004 GBP
Retailer 2£2,222 GBP
Retailer 5£3,144 GBP
NZ Jewellers£3,747 GBP

24 data points across 8 retailers

8 retailers£1,610 GBP to £3,747 GBP

A
Cheapest Retailer
-
£1,610 GBP
Retailer 2
-
£1,793 GBP
View
Price last confirmed 7 days ago
A
Retailer 3
-
£1,793 GBP
View
Retailer 4
-
£1,876 GBP
View
Price last confirmed 7 days ago
A
Retailer 5
-
£2,004 GBP
View
A
Retailer 6
-
£2,222 GBP
View
Retailer 7
-
£3,144 GBP
View
Price last confirmed 10 days ago
Most Expensive
B
NZ Jewellers
4f52979a-a451-46ab-9db6-0f38f752bf8d · Oct 30
£3,747 GBP
$5,059 USD
View
7 more retailers have this diamond
Prices start from £1,610 GBPSave up to £2,137 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
1.03ct Round
£1,610 GBP