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Round|Natural|GIA

1.05ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 1463135785

Certificate GIA 1463135785

Diamond specifications and retailer prices

From £2,496 GBP
As of November 4, 2026
Save £2,849 GBP (53%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £7,339 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 H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1463135785. Listed at 15 retailers as of November 4, 2026, with a 114% 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
H
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 1463135785
Dimensions6.51 × 6.49 × 4.02 mm
L/W Ratio1.00
Star length50%
Lower girdle80%
Top View
6.51 mm6.49 mm1.05 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1463135785
Side View
Table 59.0%Crown 35.5°Girdle: MED-STKPavilion 41°Culet: NoneDepth 61.8%

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 4
Current: £3,070 GBP|Low: £2,138 GBP|High: £5,345 GBP|Avg: £3,496 GBP|+0.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 5£2,496 GBP
Retailer 8£2,566 GBP
Retailer 7£2,612 GBP
Retailer 10£2,887 GBP
Retailer 1£3,070 GBP
Retailer 9£3,289 GBP
Retailer 6£3,458 GBP
Retailer 3£3,745 GBP
Retailer 4£5,117 GBP
Retailer 2£5,345 GBP

45 data points across 10 retailers

15 retailers£2,496 GBP to £5,345 GBP

B+
Cheapest Retailer
-
£2,496 GBP
B+
Retailer 2
-
£2,566 GBP
View
Final sale: no returns
B+
Retailer 3
-
£2,612 GBP
View
Retailer 4
-
£2,780 GBP
View
Price last confirmed 8 days ago
B+
Retailer 5
-
£2,780 GBP
View
B
Retailer 6
-
£2,887 GBP
View
B
Retailer 7
-
£3,070 GBP
View
B
Retailer 8
-
£3,207 GBP
View
Retailer 9
-
£3,289 GBP
View
Price last confirmed 33 days ago
B
Retailer 10
-
£3,458 GBP
View
Retailer 11
-
£3,471 GBP
View
Price last confirmed 14 days ago
B
Retailer 12
-
£3,745 GBP
View
B
Retailer 13
-
£5,117 GBP
View
B
Retailer 14
-
£5,345 GBP
View
Most Expensive
Diamond Quarter
1.05SI1H14858E06N · Nov 5
£7,339 GBP
View
Price under review
14 more retailers have this diamond
Prices start from £2,496 GBPSave up to £2,849 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
£2,496 GBP