Round|Natural|GIA

1.05ct F SI1 Round Natural Diamond

EX • F/SI1 • GIA 2494311908

Certificate GIA 2494311908

Diamond specifications and retailer prices

From £2,613 GBP
As of November 6, 2026
Save £3,098 GBP (54%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £7,782 GBP at Diamond Quarter · As of November 5, 2026
View at Diamond Quarter

About this 1.05ct natural round diamond

This 1.05ct natural round sits in the classic one-carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2494311908. Listed at 15 retailers as of November 5, 2026, with a 119% 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

1.05
Carat
F
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
Crown angle35°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 2494311908
Dimensions6.55 × 6.53 × 4.05 mm
L/W Ratio1.00
Star length50%
Lower girdle80%
Top View
6.55 mm6.53 mm1.05 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 2494311908
Side View
Table 57.0%Crown 35°Girdle: THN-STKPavilion 41.2°Culet: NoneDepth 61.9%

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: £3,703 GBP|Low: £2,613 GBP|High: £5,284 GBP|Avg: £3,494 GBP|+2.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 8£2,613 GBP
Retailer 5£2,660 GBP
Retailer 7£2,835 GBP
Retailer 9£2,970 GBP
Retailer 2£3,300 GBP
Retailer 6£3,496 GBP
Retailer 1£3,703 GBP
Retailer 3£3,999 GBP
Retailer 4£5,207 GBP

43 data points across 9 retailers

15 retailers£2,613 GBP to £5,712 GBP

B+
Cheapest Retailer
-
£2,613 GBP
B+
Retailer 2
-
£2,660 GBP
View
B+
Retailer 3
-
£2,835 GBP
View
B+
Retailer 4
-
£2,970 GBP
View
Retailer 5
-
£2,970 GBP
View
Price last confirmed 8 days ago
B+
Retailer 6
-
£2,970 GBP
View
B+
Retailer 7
-
£3,300 GBP
View
B
Retailer 8
-
£3,427 GBP
View
Retailer 9
-
£3,496 GBP
View
Price last confirmed 28 days ago
B
Retailer 10
-
£3,703 GBP
View
Retailer 11
-
£3,709 GBP
View
Price last confirmed 14 days ago
B
Retailer 12
-
£3,999 GBP
View
B
Retailer 13
-
£5,207 GBP
View
B
Retailer 14
-
£5,712 GBP
View
Most Expensive
Diamond Quarter
1.05SI1F2408386BN · Nov 5
£7,782 GBP
View
Price under review
14 more retailers have this diamond
Prices start from £2,613 GBPSave up to £3,098 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+
1.05ct Round
£2,613 GBP