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Round|Natural|GIA

1.00ct F SI2 Round Natural Diamond

EX • F/SI2 • GIA 6561210142

Certificate GIA 6561210142

Diamond specifications and retailer prices

From £1,558 GBP
As of November 6, 2026
Save £2,773 GBP (64%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £4,331 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

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 6561210142. Listed at 20 retailers as of November 5, 2026, with prices from £1,558 to £4,331, a £2,773 spread on the same certified stone. NZ Jewellers lists it at £4,331. 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
FluorescenceFaint
Crown angle33.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6561210142
Dimensions6.44 × 6.48 × 3.85 mm
L/W Ratio1.01
Girdle conditionFaceted
Key to symbols
Twinning Wisp, Feather, Indented Natural
Top View
6.44 mm6.48 mm1.00 ctF / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6561210142
Side View
Table 61.0%Crown 33.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 59.6%

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: £4,331 GBP|Low: £1,558 GBP|High: £4,331 GBP|Avg: £2,474 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
November 6, 2026
Retailer 4£1,558 GBP
Retailer 8£1,617 GBP
Retailer 9£1,873 GBP
Retailer 3£1,883 GBP
Retailer 13£1,954 GBP
Retailer 2£2,024 GBP
Retailer 6£2,072 GBP
Retailer 7£2,072 GBP
Retailer 11£2,167 GBP
Retailer 10£2,167 GBP
Retailer 12£2,249 GBP
Retailer 14£2,410 GBP
Retailer 15£3,620 GBP
Retailer 5£3,709 GBP
NZ Jewellers£4,331 GBP

23 data points across 15 retailers

20 retailers£1,558 GBP to £4,331 GBP

A
Cheapest Retailer
-
£1,558 GBP
A
Retailer 2
-
£1,617 GBP
View
A
Retailer 3
-
£1,873 GBP
View
A
Retailer 4
-
£1,883 GBP
View
A
Retailer 5
-
£1,913 GBP
View
Final sale: no returns
A
Retailer 6
-
£1,913 GBP
View
B+
Retailer 7
-
£1,930 GBP
View
A
Retailer 8
-
£1,954 GBP
View
A
Retailer 9
-
£2,024 GBP
View
B+
Retailer 10
-
£2,072 GBP
View
Retailer 11
-
£2,072 GBP
View
Price last confirmed 8 days ago
B+
Retailer 12
-
£2,114 GBP
View
B+
Retailer 13
-
£2,167 GBP
View
B+
Retailer 14
-
£2,167 GBP
View
B+
Retailer 15
-
£2,177 GBP
View
B+
Retailer 16
-
£2,249 GBP
View
B+
Retailer 17
-
£2,410 GBP
View
B
Retailer 18
-
£3,620 GBP
View
Retailer 19
-
£3,709 GBP
View
Price last confirmed 9 days ago
Most Expensive
B
NZ Jewellers
26258ee0-2dd5-48f7-a34f-52c222b25a27 · Nov 5
£4,331 GBP
$5,797 USD
View
19 more retailers have this diamond
Prices start from £1,558 GBPSave up to £2,773 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
£1,558 GBP