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Round|Natural|GIA

1.05ct F SI2 Round Natural Diamond

EX • F/SI2 • GIA 6565521271

Certificate GIA 6565521271

Diamond specifications and retailer prices

From £1,541 GBP
As of November 6, 2026
Save £2,011 GBP (57%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £3,551 GBP at MOH London · As of November 4, 2026
View at MOH London

About this 1.05ct natural round diamond

This 1.05ct 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 6565521271. Listed at 12 retailers as of November 4, 2026, with prices from £1,541 to £3,551, a £2,011 spread on the same certified stone. MOH London lists it at £3,551. 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

1.05
Carat
F
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle35°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 6565521271
Dimensions6.50 × 6.48 × 4.01 mm
L/W Ratio1.00
Culet sizeNone
Key to symbols
Twinning Wisp, Feather, Indented Natural, Natural
Top View
6.50 mm6.48 mm1.05 ctF / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6565521271
Side View
Table 57.0%Crown 35°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 61.8%

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: £3,551 GBP|Low: £1,541 GBP|High: £3,646 GBP|Avg: £2,171 GBP|-2.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 4£1,541 GBP
Retailer 3£1,820 GBP
Retailer 5£1,837 GBP
Retailer 2£1,876 GBP
Retailer 9£2,032 GBP
Retailer 10£2,111 GBP
Retailer 11£2,137 GBP
Retailer 6£2,138 GBP
Retailer 8£2,377 GBP
Retailer 7£2,412 GBP
MOH London£3,551 GBP

23 data points across 11 retailers

12 retailers£1,541 GBP to £3,551 GBP

A
Cheapest Retailer
-
£1,541 GBP
A
Retailer 2
-
£1,820 GBP
View
A
Retailer 3
-
£1,837 GBP
View
A
Retailer 4
-
£1,876 GBP
View
Final sale: no returns
Retailer 5
-
£1,907 GBP
View
Price last confirmed 26 days ago
Retailer 6
-
£2,032 GBP
View
Price last confirmed 8 days ago
B+
Retailer 7
-
£2,111 GBP
View
B+
Retailer 8
-
£2,137 GBP
View
A
Retailer 9
-
£2,138 GBP
View
B+
Retailer 10
-
£2,377 GBP
View
B+
Retailer 11
-
£2,412 GBP
View
Most Expensive
B
MOH London
5231E2A76 · Nov 4
£3,551 GBP
View
11 more retailers have this diamond
Prices start from £1,541 GBPSave up to £2,011 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
1.05ct Round
£1,541 GBP