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1.25ct F SI2 Round Natural Diamond

EX • F/SI2 • HRD 260000218639

Certificate HRD 260000218639

Diamond specifications and retailer prices

From £1,598 GBP
As of November 6, 2026
Save £2,454 GBP (61%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £4,052 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.25ct natural round diamond

This 1.25ct natural round sits in the one-and-a-quarter to one-and-a-half carat band, graded F colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by HRD 260000218639. Listed at 11 retailers as of November 5, 2026, with prices from £1,598 to £4,052, a £2,454 spread on the same certified stone. NZ Jewellers lists it at £4,052. 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

1.25
Carat
F
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.3°
Pavilion angle41°
OriginNatural
Grading LabHRD
CertificateHRD 260000218639
Dimensions6.80 × 6.85 × 4.31 mm
L/W Ratio1.01
Culet sizeNone
Top View
6.80 mm6.85 mm1.25 ctF / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateHRD 260000218639
Side View
Table 57.0%Crown 36.3°Girdle: MediumPavilion 41°Culet: NoneDepth 63.1%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £4,052 GBP|Low: £1,598 GBP|High: £4,078 GBP|Avg: £2,595 GBP|-0.6%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 5£1,598 GBP
Retailer 4£1,920 GBP
Retailer 10£2,214 GBP
Retailer 2£2,227 GBP
Retailer 6£2,250 GBP
Retailer 3£2,326 GBP
Retailer 11£2,326 GBP
Retailer 8£2,474 GBP
Retailer 7£2,502 GBP
Retailer 9£3,878 GBP
NZ Jewellers£4,052 GBP

42 data points across 11 retailers

11 retailers£1,598 GBP to £4,052 GBP

A
Cheapest Retailer
-
£1,598 GBP
A
Retailer 2
-
£1,920 GBP
View
A
Retailer 3
-
£2,214 GBP
View
A
Retailer 4
-
£2,227 GBP
View
A
Retailer 5
-
£2,250 GBP
View
A
Retailer 6
-
£2,326 GBP
View
Retailer 7
-
£2,326 GBP
View
Price last confirmed 8 days ago
A
Retailer 8
-
£2,474 GBP
View
A
Retailer 9
-
£2,502 GBP
View
B+
Retailer 10
-
£3,878 GBP
View
Most Expensive
B
NZ Jewellers
1daf0a54-5f12-446b-92f0-e3e6ce8f6abb · Nov 5
£4,052 GBP
$5,423 USD
View
10 more retailers have this diamond
Prices start from £1,598 GBPSave up to £2,454 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
1.25ct Round
£1,598 GBP