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Round|Natural|GIA

1.05ct F SI1 Round Natural Diamond

EX • F/SI1 • GIA 6565154005

Certificate GIA 6565154005

Diamond specifications and retailer prices

From £1,807 GBP
As of November 6, 2026
Save £2,466 GBP (58%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £4,273 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

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 6565154005. Listed at 10 retailers as of November 5, 2026, with prices from £1,807 to £4,273, a £2,466 spread on the same certified stone. NZ Jewellers lists it at £4,273. 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
FluorescenceFaint
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6565154005
Dimensions6.42 × 6.45 × 4.02 mm
L/W Ratio1.00
Key to symbols
Crystal, Feather, Needle, Pinpoint, Cloud
Top View
6.42 mm6.45 mm1.05 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6565154005
Side View
Table 58.0%CrownGirdle: Slightly ThickPavilion 40.8°Culet: NoneDepth 62.4%

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: £4,273 GBP|Low: £1,807 GBP|High: £4,402 GBP|Avg: £2,756 GBP|-2.9%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 9£1,807 GBP
Retailer 7£2,099 GBP
Retailer 10£2,233 GBP
Retailer 2£2,347 GBP
Retailer 5£2,453 GBP
Retailer 3£2,519 GBP
Retailer 8£2,548 GBP
Retailer 4£2,809 GBP
Retailer 6£4,091 GBP
NZ Jewellers£4,273 GBP

20 data points across 10 retailers

10 retailers£1,807 GBP to £4,273 GBP

A
Cheapest Retailer
-
£1,807 GBP
A
Retailer 2
-
£2,099 GBP
View
Retailer 3
-
£2,233 GBP
View
Price last confirmed 7 days ago
B+
Retailer 4
-
£2,347 GBP
View
B+
Retailer 5
-
£2,453 GBP
View
B+
Retailer 6
-
£2,519 GBP
View
B+
Retailer 7
-
£2,548 GBP
View
B+
Retailer 8
-
£2,809 GBP
View
B
Retailer 9
-
£4,091 GBP
View
Most Expensive
B
NZ Jewellers
a0ea82f5-239f-4be0-b24e-886fd76c7c48 · Nov 5
£4,273 GBP
$5,720 USD
View
9 more retailers have this diamond
Prices start from £1,807 GBPSave up to £2,466 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
£1,807 GBP