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Round|Natural|GIA

1.03ct E SI1 Round Natural Diamond

EX • E/SI1 • GIA 2397210978

Certificate GIA 2397210978

Diamond specifications and retailer prices

From £4,677 GBP
As of November 4, 2026
Save £2,947 GBP (39%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £10,453 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 E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2397210978. Listed at 22 retailers as of November 4, 2026, with a 63% 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
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2397210978
Dimensions6.56 × 6.54 × 4.01 mm
L/W Ratio1.00
Top View
6.56 mm6.54 mm1.03 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2397210978
Side View
Table 56.0%CrownGirdle: ThinPavilionCulet: NoneDepth 61.2%

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: Nov 4
Current: £5,803 GBP|Low: £4,355 GBP|High: £8,815 GBP|Avg: £6,192 GBP|-0.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 6£4,677 GBP
Retailer 10£5,159 GBP
Retailer 8£5,227 GBP
Retailer 9£5,749 GBP
Retailer 1£5,803 GBP
Retailer 7£5,994 GBP
Retailer 2£6,192 GBP
Retailer 4£6,438 GBP
Retailer 3£7,625 GBP
Retailer 5£8,686 GBP

44 data points across 10 retailers

22 retailers£4,677 GBP to £7,625 GBP

B+
Cheapest Retailer
-
£4,677 GBP
B
Retailer 2
-
£4,725 GBP
View
B
Retailer 3
-
£4,938 GBP
View
B
Retailer 4
-
£5,159 GBP
View
B
Retailer 5
-
£5,227 GBP
View
B
Retailer 6
-
£5,227 GBP
View
Final sale: no returns
Retailer 7
-
£5,227 GBP
View
Price last confirmed 8 days ago
B
Retailer 8
-
£5,662 GBP
View
B
Retailer 9
-
£5,749 GBP
View
B
Retailer 10
-
£5,803 GBP
View
Retailer 11
-
£5,994 GBP
View
Price last confirmed 15 days ago
B
Retailer 12
-
£6,192 GBP
View
B
Retailer 13
-
£6,241 GBP
View
B
Retailer 14
-
£6,241 GBP
View
B
Retailer 15
-
£6,438 GBP
View
B
Retailer 16
-
£6,533 GBP
View
Retailer 17
-
£6,884 GBP
View
Price last confirmed 14 days ago
B
Retailer 18
-
£6,969 GBP
View
B
Retailer 19
-
£7,625 GBP
View
Retailer 20
-
£8,686 GBP
View
Price under review
Retailer 21
-
£9,625 GBP
View
Price under review
Most Expensive
NZ Jewellers
737a6a91-b54b-421c-9286-5a8cb41be8d6 · Nov 5
£10,453 GBP
$14,069 USD
View
Price under review
21 more retailers have this diamond
Prices start from £4,677 GBPSave up to £2,947 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
£4,677 GBP