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Round|Natural|IGI

1.03ct I SI2 Round Natural Diamond

EX • I/SI2 • IGI 523290757

Shape and cutting style on the report: Round brilliant

Certificate IGI 523290757

Diamond specifications and retailer prices

From £1,323 GBP
As of November 5, 2026
Save £2,250 GBP (63%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £3,573 GBP at NZ Jewellers · As of November 5, 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 SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI 523290757. Listed at 13 retailers as of November 5, 2026, with prices from £1,323 to £3,573, a £2,250 spread on the same certified stone. NZ Jewellers lists it at £3,573. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.03
Carat
I
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle32.5°
Pavilion angle41.5°
OriginNatural
Grading LabIGI
CertificateIGI 523290757
Dimensions6.55 × 6.50 × 3.97 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Top View
6.55 mm6.50 mm1.03 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 523290757
Side View
Table 60.0%Crown 32.5°Girdle: MediumPavilion 41.5°Culet: NoneDepth 60.8%

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: Nov 5
Current: £3,573 GBP|Low: £1,239 GBP|High: £3,573 GBP|Avg: £1,804 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 9£1,323 GBP
Retailer 7£1,352 GBP
Retailer 6£1,363 GBP
Retailer 2£1,382 GBP
Retailer 3£1,465 GBP
Retailer 11£1,465 GBP
Retailer 8£1,533 GBP
Retailer 10£1,690 GBP
Retailer 5£1,993 GBP
Retailer 4£2,560 GBP
NZ Jewellers£3,573 GBP

45 data points across 11 retailers

13 retailers£1,323 GBP to £3,573 GBP

A
Cheapest Retailer
-
£1,323 GBP
A
Retailer 2
-
£1,352 GBP
View
Final sale: no returns
A
Retailer 3
-
£1,363 GBP
View
A
Retailer 4
-
£1,382 GBP
View
A
Retailer 5
-
£1,465 GBP
View
Retailer 6
-
£1,465 GBP
View
Price last confirmed 8 days ago
A
Retailer 7
-
£1,533 GBP
View
B+
Retailer 8
-
£1,690 GBP
View
Retailer 9
-
£1,759 GBP
View
Price last confirmed 60 days ago
B+
Retailer 10
-
£1,993 GBP
View
B+
Retailer 11
-
£2,560 GBP
View
Retailer 12
-
£3,188 GBP
View
Price last confirmed 66 days ago
Most Expensive
B
NZ Jewellers
2bfe237d-685b-4f8d-a5b2-3ae7e998d85d · Nov 5
£3,573 GBP
$4,809 USD
View
12 more retailers have this diamond
Prices start from £1,323 GBPSave up to £2,250 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
£1,323 GBP