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1.03ct F SI2 Round Natural Diamond

GD • F/SI2 • GIA 6291496559

Certificate GIA 6291496559

Diamond specifications and retailer prices

From £2,071 GBP
As of November 6, 2026
Save £3,288 GBP (61%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £5,359 GBP at Diamond Quarter · As of November 6, 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 F colour (colourless) and SI2 clarity (slightly-included), with a standard cut grade and certified by GIA 6291496559. Listed at 13 retailers as of November 6, 2026, with prices from £2,071 to £5,359, a £3,288 spread on the same certified stone. Diamond Quarter lists it at £5,359. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.03
Carat
F
Colour
SI2
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.5°
Pavilion angle41.8°
OriginNatural
Grading LabGIA
CertificateGIA 6291496559
Dimensions6.22 × 6.19 × 4.09 mm
L/W Ratio1.00
Star length55%
Lower girdle75%
Top View
6.22 mm6.19 mm1.03 ctF / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6291496559
Side View
Table 63.0%Crown 38.5°Girdle: THK-VTKPavilion 41.8°Culet: NoneDepth 65.9%

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 6
Current: £2,625 GBP|Low: £2,071 GBP|High: £4,447 GBP|Avg: £2,816 GBP|+1.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 9£2,071 GBP
Retailer 7£2,096 GBP
Retailer 8£2,191 GBP
Retailer 3£2,312 GBP
Retailer 12£2,312 GBP
Retailer 10£2,401 GBP
Retailer 1£2,625 GBP
Retailer 2£2,668 GBP
Retailer 4£2,893 GBP
Retailer 5£2,964 GBP
Retailer 6£4,256 GBP
Retailer 11£4,447 GBP

43 data points across 12 retailers

13 retailers£2,071 GBP to £5,359 GBP

B+
Cheapest Retailer
-
£2,071 GBP
B+
Retailer 2
-
£2,096 GBP
View
B+
Retailer 3
-
£2,191 GBP
View
B+
Retailer 4
-
£2,312 GBP
View
Retailer 5
-
£2,312 GBP
View
Price last confirmed 8 days ago
B+
Retailer 6
-
£2,401 GBP
View
B
Retailer 7
-
£2,625 GBP
View
B
Retailer 8
-
£2,668 GBP
View
Retailer 9
-
£2,893 GBP
View
Price last confirmed 14 days ago
B
Retailer 10
-
£2,964 GBP
View
B
Retailer 11
-
£4,256 GBP
View
C
Retailer 12
-
£4,447 GBP
View
Most Expensive
C
Diamond Quarter
1.03SI2F62599220N · Nov 6
£5,359 GBP
View
12 more retailers have this diamond
Prices start from £2,071 GBPSave up to £3,288 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
£2,071 GBP