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Round|Natural|GIA

1.00ct F SI2 Round Natural Diamond

EX • F/SI2 • GIA 6451475677

Certificate GIA 6451475677

Diamond specifications and retailer prices

From £1,953 GBP
As of November 6, 2026
Save £3,247 GBP (62%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £5,200 GBP at Diamond Quarter · As of November 6, 2026
View at Diamond Quarter

About this 1ct natural round diamond

This 1ct natural round sits in the classic one-carat band, graded F colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6451475677. Listed at 19 retailers as of November 6, 2026, with prices from £1,953 to £5,200, a £3,247 spread on the same certified stone. Diamond Quarter lists it at £5,200. 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

1.00
Carat
F
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 6451475677
Dimensions6.46 × 6.42 × 3.93 mm
L/W Ratio1.01
Top View
6.46 mm6.42 mm1.00 ctF / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6451475677
Side View
Table 57.0%Crown 33°Girdle: Slightly ThickPavilion 41°Culet: NoneDepth 61.0%

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 6
Current: £1,953 GBP|Low: £1,953 GBP|High: £4,558 GBP|Avg: £2,732 GBP|-3.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 1£1,953 GBP
Retailer 8£1,979 GBP
Retailer 2£2,348 GBP
Retailer 9£2,391 GBP
Retailer 3£2,435 GBP
Retailer 10£2,485 GBP
Retailer 4£2,758 GBP
Retailer 5£2,770 GBP
Retailer 7£2,876 GBP
Retailer 6£4,492 GBP

31 data points across 10 retailers

19 retailers£1,953 GBP to £5,200 GBP

A
Cheapest Retailer
-
£1,953 GBP
A
Retailer 2
-
£1,979 GBP
View
B+
Retailer 3
-
£2,348 GBP
View
B+
Retailer 4
-
£2,391 GBP
View
B+
Retailer 5
-
£2,435 GBP
View
B+
Retailer 6
-
£2,485 GBP
View
Final sale: no returns
Retailer 7
-
£2,521 GBP
View
Price last confirmed 109 days ago
Retailer 8
-
£2,693 GBP
View
Price last confirmed 8 days ago
B
Retailer 9
-
£2,693 GBP
View
B+
Retailer 10
-
£2,758 GBP
View
B+
Retailer 11
-
£2,770 GBP
View
B+
Retailer 12
-
£2,796 GBP
View
B+
Retailer 13
-
£2,802 GBP
View
B+
Retailer 14
-
£2,876 GBP
View
B
Retailer 15
-
£3,107 GBP
View
B
Retailer 16
-
£3,151 GBP
View
B
Retailer 17
-
£4,492 GBP
View
B
Retailer 18
-
£4,692 GBP
View
Most Expensive
B
Diamond Quarter
1.0SI2F64778F74N · Nov 6
£5,200 GBP
View
18 more retailers have this diamond
Prices start from £1,953 GBPSave up to £3,247 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
1.00ct Round
£1,953 GBP