CaratHunter
Plans
Round|Natural|GIA

1.03ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 2556574821

Certificate GIA 2556574821

Diamond specifications and retailer prices

From £2,801 GBP
As of November 1, 2026
Save £2,886 GBP (51%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £6,221 GBP at NZ Jewellers · As of November 2, 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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2556574821. Listed at 15 retailers as of November 1, 2026, with a 103% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 2556574821
Dimensions6.43 × 6.41 × 4.03 mm
L/W Ratio1.00
Star length50%
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Needle
Top View
6.43 mm6.41 mm1.03 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2556574821
Side View
Table 57.0%Crown 36.5°Girdle: THN-STKPavilion 41°Culet: NoneDepth 62.7%

Caratlytics Score

How it works →
B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £6,221 GBP|Low: £1,383 GBP|High: £6,221 GBP|Avg: £3,347 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
Retailer 15
Retailer 16
November 3, 2026
Retailer 8£1,383 GBP
Retailer 7£1,635 GBP
Retailer 12£2,801 GBP
Retailer 3£2,847 GBP
Retailer 4£2,933 GBP
Retailer 15£3,069 GBP
Retailer 5£3,235 GBP
Retailer 13£3,235 GBP
Retailer 14£3,235 GBP
Retailer 2£3,528 GBP
Retailer 6£3,733 GBP
Retailer 9£3,797 GBP
Retailer 16£3,943 GBP
Retailer 11£4,389 GBP
Retailer 10£5,687 GBP
NZ Jewellers£6,221 GBP

23 data points across 16 retailers

15 retailers£2,801 GBP to £5,687 GBP

Retailer 1
-
£1,635 GBP
Price last confirmed 33 days ago
B
Retailer 2
-
£2,801 GBP
View
B
Retailer 3
-
£2,847 GBP
View
B
Retailer 4
-
£2,933 GBP
View
B
Retailer 5
-
£3,069 GBP
View
B
Retailer 6
-
£3,235 GBP
View
Retailer 7
-
£3,235 GBP
View
Price last confirmed 8 days ago
B
Retailer 8
-
£3,235 GBP
View
B
Retailer 9
-
£3,528 GBP
View
B
Retailer 10
-
£3,549 GBP
View
B
Retailer 11
-
£3,733 GBP
View
B
Retailer 12
-
£3,797 GBP
View
B
Retailer 13
-
£4,389 GBP
View
B
Retailer 14
-
£5,687 GBP
View
Most Expensive
NZ Jewellers
2941b8e2-fb7e-40b5-9a24-504f2ce5863b · Nov 2
£6,221 GBP
$8,373 USD
View
Price under review
14 more retailers have this diamond
Prices start from £2,801 GBPSave up to £2,886 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
£2,801 GBP