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Round|Natural|GIA

1.00ct F SI1 Round Natural Diamond

EX • F/SI1 • GIA 1523168139

Certificate GIA 1523168139

Diamond specifications and retailer prices

From £1,969 GBP
As of November 6, 2026
Save £2,464 GBP (56%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: £4,433 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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1523168139. Listed at 23 retailers as of November 5, 2026, with prices from £1,969 to £4,433, a £2,464 spread on the same certified stone. NZ Jewellers lists it at £4,433. 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
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 1523168139
Dimensions6.33 × 6.29 × 3.97 mm
L/W Ratio1.01
Star length55%
Lower girdle80%
Cert comments
Additional clouds are not shown. Pinpoints are not shown.
Key to symbols
Cloud, Feather, Indented Natural, Natural
Top View
6.33 mm6.29 mm1.00 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1523168139
Side View
Table 57.0%Crown 36°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.9%

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: £4,433 GBP|Low: £1,951 GBP|High: £4,472 GBP|Avg: £2,846 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
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Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
Retailer 22
November 6, 2026
Retailer 22£1,969 GBP
Retailer 17£1,970 GBP
Retailer 12£2,259 GBP
Retailer 10£2,348 GBP
Retailer 18£2,418 GBP
Retailer 2£2,435 GBP
Retailer 3£2,454 GBP
Retailer 8£2,524 GBP
Retailer 5£2,545 GBP
Retailer 7£2,545 GBP
Retailer 9£2,563 GBP
Retailer 20£2,616 GBP
Retailer 6£2,643 GBP
Retailer 4£2,652 GBP
Retailer 13£2,737 GBP
Retailer 19£2,878 GBP
Retailer 11£2,936 GBP
Retailer 16£3,106 GBP
Retailer 14£3,703 GBP
Retailer 15£3,807 GBP
Retailer 21£4,244 GBP
NZ Jewellers£4,433 GBP

23 data points across 22 retailers

23 retailers£1,969 GBP to £4,433 GBP

A
Cheapest Retailer
-
£1,969 GBP
A
Retailer 2
-
£1,970 GBP
View
B+
Retailer 3
-
£2,259 GBP
View
B+
Retailer 4
-
£2,348 GBP
View
Final sale: no returns
B+
Retailer 5
-
£2,418 GBP
View
B+
Retailer 6
-
£2,435 GBP
View
B+
Retailer 7
-
£2,454 GBP
View
B+
Retailer 8
-
£2,524 GBP
View
Retailer 9
-
£2,545 GBP
View
Price last confirmed 8 days ago
B+
Retailer 10
-
£2,545 GBP
View
B+
Retailer 11
-
£2,563 GBP
View
B+
Retailer 12
-
£2,616 GBP
View
B+
Retailer 13
-
£2,643 GBP
View
B+
Retailer 14
-
£2,652 GBP
View
B+
Retailer 15
-
£2,737 GBP
View
Retailer 16
-
£2,849 GBP
View
Price last confirmed 29 days ago
B+
Retailer 17
-
£2,878 GBP
View
B+
Retailer 18
-
£2,936 GBP
View
B+
Retailer 19
-
£3,106 GBP
View
B
Retailer 20
-
£3,703 GBP
View
B
Retailer 21
-
£3,807 GBP
View
B
Retailer 22
-
£4,244 GBP
View
Most Expensive
B
NZ Jewellers
f2a8293a-083b-4b96-913e-6d8a0722e6d1 · Nov 5
£4,433 GBP
$5,934 USD
View
22 more retailers have this diamond
Prices start from £1,969 GBPSave up to £2,464 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
£1,969 GBP