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Round|Natural|GIA

1.03ct E SI1 Round Natural Diamond

EX • E/SI1 • GIA 6392476992

Certificate GIA 6392476992

Diamond specifications and retailer prices

From £5,335 GBP
As of November 4, 2026
Save £2,159 GBP (29%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £10,870 GBP at Diamond Quarter · As of November 5, 2026
View at Diamond Quarter

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 6392476992. Listed at 22 retailers as of November 4, 2026, with a 40% 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
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6392476992
Dimensions6.68 × 6.63 × 3.92 mm
L/W Ratio1.01
Top View
6.68 mm6.63 mm1.03 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6392476992
Side View
Table 60.0%CrownGirdle: ThinPavilionCulet: NoneDepth 58.9%

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 4
Current: £6,582 GBP|Low: £4,996 GBP|High: £10,111 GBP|Avg: £7,221 GBP|-0.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 5£5,335 GBP
Retailer 7£5,995 GBP
Retailer 1£6,582 GBP
Retailer 8£6,594 GBP
Retailer 6£6,622 GBP
Retailer 3£7,376 GBP
Retailer 2£8,746 GBP
Retailer 4£9,963 GBP

44 data points across 8 retailers

22 retailers£5,335 GBP to £7,494 GBP

B
Cheapest Retailer
-
£5,335 GBP
B
Retailer 2
-
£5,434 GBP
View
B
Retailer 3
-
£5,613 GBP
View
B
Retailer 4
-
£5,890 GBP
View
B
Retailer 5
-
£5,966 GBP
View
Retailer 6
-
£5,995 GBP
View
Price last confirmed 8 days ago
B
Retailer 7
-
£5,995 GBP
View
Final sale: no returns
B
Retailer 8
-
£6,494 GBP
View
B
Retailer 9
-
£6,582 GBP
View
B
Retailer 10
-
£6,594 GBP
View
Retailer 11
-
£6,622 GBP
View
Price last confirmed 14 days ago
B
Retailer 12
-
£7,110 GBP
View
B
Retailer 13
-
£7,110 GBP
View
B
Retailer 14
-
£7,126 GBP
View
B
Retailer 15
-
£7,348 GBP
View
B
Retailer 16
-
£7,376 GBP
View
B
Retailer 17
-
£7,494 GBP
View
Retailer 18
-
£7,893 GBP
View
Price last confirmed 14 days ago
Retailer 19
-
£8,746 GBP
View
Price under review
Retailer 20
-
£9,963 GBP
View
Price under review
Most Expensive
Diamond Quarter
1.03SI1E6392EF6AN · Nov 5
£10,870 GBP
View
Price under review
20 more retailers have this diamond
Prices start from £5,335 GBPSave up to £2,159 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
£5,335 GBP