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Round|Natural|IGI

1.03ct I I1 Round Natural Diamond

EX • I/I1 • IGI 553252599

Shape and cutting style on the report: Round brilliant

Certificate IGI 553252599

Diamond specifications and retailer prices

From £1,184 GBP
$1,587 USD
As of October 30, 2026
Save £1,985 GBP (63%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £3,170 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 I1 clarity (included), with a top-tier cut grade and certified by IGI 553252599. Listed at 7 retailers as of October 30, 2026, with prices from £1,184 to £3,170, a £1,985 spread on the same certified stone. NZ Jewellers lists it at £3,170. 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
I1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.2°
Pavilion angle40.6°
OriginNatural
Grading LabIGI
CertificateIGI 553252599
Dimensions6.40 × 6.47 × 4.01 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
IDEAL CUT ROUND BRILLIANT
Top View
6.40 mm6.47 mm1.03 ctI / I1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 553252599
Side View
Table 57.0%Crown 36.2°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.3%

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 30
Current: £3,170 GBP|Low: £940 GBP|High: £3,170 GBP|Avg: £1,563 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 1, 2026
Retailer 8£940 GBP
Retailer 7£1,184 GBP
Retailer 3£1,299 GBP
Retailer 5£1,299 GBP
Retailer 4£1,360 GBP
Retailer 6£1,499 GBP
Retailer 2£1,767 GBP
NZ Jewellers£3,170 GBP

12 data points across 8 retailers

7 retailers£1,184 GBP to £3,170 GBP

B+
Cheapest Retailer
-
£1,184 GBP
$1,587 USD
B+
Retailer 2
-
£1,299 GBP
$1,741 USD
View
B+
Retailer 3
-
£1,299 GBP
$1,741 USD
View
B+
Retailer 4
-
£1,360 GBP
$1,822 USD
View
B+
Retailer 5
-
£1,499 GBP
$2,009 USD
View
B
Retailer 6
-
£1,767 GBP
€2,255 EUR
View
Most Expensive
C
NZ Jewellers
3682f781-c6dd-418e-814b-b7a577963c17 · Oct 30
£3,170 GBP
$4,247 USD
View
6 more retailers have this diamond
Prices start from £1,184 GBPSave up to £1,985 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+
1.03ct Round
£1,184 GBP