CaratHunter
Plans
Round|Natural|GIA

1.25ct G SI1 Round Natural Diamond

EX • G/SI1 • GIA 2566796579

Certificate GIA 2566796579

Diamond specifications and retailer prices

From £3,265 GBP
As of November 5, 2026
Save £1,926 GBP (37%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £5,191 GBP at MOH London · As of November 2, 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 G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2566796579. Listed at 4 retailers as of November 2, 2026, with prices from £3,265 to £5,191, a £1,926 spread on the same certified stone. MOH London lists it at £5,191. 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
G
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 2566796579
Dimensions6.87 × 6.82 × 4.30 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Crystal, Feather, Cloud, Needle
Top View
6.87 mm6.82 mm1.25 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2566796579
Side View
Table 58.0%Crown 36.5°GirdlePavilion 41°Culet: NoneDepth 62.7%

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 5
Current: £5,191 GBP|Low: £3,265 GBP|High: £5,191 GBP|Avg: £3,834 GBP
MOH London
Retailer 2
Retailer 3
Retailer 4
November 6, 2026
Retailer 4£3,265 GBP
Retailer 2£3,281 GBP
Retailer 3£3,659 GBP
MOH London£5,191 GBP

6 data points across 4 retailers

4 retailers£3,265 GBP to £5,191 GBP

B+
Cheapest Retailer
-
£3,265 GBP
A
Retailer 2
-
£3,281 GBP
View
B+
Retailer 3
-
£3,659 GBP
View
Most Expensive
B
MOH London
DA092CBA6 · Nov 2
£5,191 GBP
View
3 more retailers have this diamond
Prices start from £3,265 GBPSave up to £1,926 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
£3,265 GBP