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Round|Natural|GIA

1.25ct F SI2 Round Natural Diamond

EX • F/SI2 • GIA 6541403286

Certificate GIA 6541403286

Diamond specifications and retailer prices

From £2,553 GBP
As of November 6, 2026
Save £2,929 GBP (53%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £5,482 GBP at MOH London · As of November 4, 2026
View at MOH London

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 GIA 6541403286. Listed at 11 retailers as of November 4, 2026, with prices from £2,553 to £5,482, a £2,929 spread on the same certified stone. MOH London lists it at £5,482. 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 angle33°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 6541403286
Dimensions6.92 × 6.95 × 4.27 mm
L/W Ratio1.00
Top View
6.92 mm6.95 mm1.25 ctF / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6541403286
Side View
Table 59.0%Crown 33°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 61.6%

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: £5,482 GBP|Low: £2,534 GBP|High: £5,980 GBP|Avg: £3,567 GBP|-7.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 5, 2026
Retailer 5£2,553 GBP
Retailer 9£2,650 GBP
Retailer 7£2,674 GBP
Retailer 8£3,318 GBP
Retailer 2£3,376 GBP
Retailer 6£3,519 GBP
Retailer 11£3,519 GBP
Retailer 4£3,572 GBP
Retailer 3£3,638 GBP
Retailer 10£3,902 GBP
MOH London£5,482 GBP

41 data points across 11 retailers

11 retailers£2,553 GBP to £5,482 GBP

A
Cheapest Retailer
-
£2,553 GBP
A
Retailer 2
-
£2,650 GBP
View
A
Retailer 3
-
£2,674 GBP
View
Final sale: no returns
B+
Retailer 4
-
£3,318 GBP
View
B+
Retailer 5
-
£3,376 GBP
View
B+
Retailer 6
-
£3,519 GBP
View
B+
Retailer 7
-
£3,519 GBP
View
B+
Retailer 8
-
£3,572 GBP
View
B+
Retailer 9
-
£3,638 GBP
View
Retailer 10
-
£3,902 GBP
View
Price last confirmed 14 days ago
Most Expensive
B
MOH London
1DB12624A · Nov 4
£5,482 GBP
View
10 more retailers have this diamond
Prices start from £2,553 GBPSave up to £2,929 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
£2,553 GBP