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Round|Natural|GIA

1.25ct J IF Round Natural Diamond

EX • J/IF • GIA 3555856659

Certificate GIA 3555856659

Diamond specifications and retailer prices

From £2,488 GBP
As of November 6, 2026
Save £708 GBP (22%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £3,236 GBP at Blue Nile · As of October 24, 2026
View at Blue Nile

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 J colour (near-colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by GIA 3555856659. Listed at 6 retailers as of November 6, 2026, with a 28% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.25
Carat
J
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 3555856659
Dimensions6.82 × 6.88 × 4.25 mm
L/W Ratio1.01
Culet sizeNone
Top View
6.82 mm6.88 mm1.25 ctJ / IF
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 3555856659
Side View
Table 59.0%Crown 35.5°Girdle: Slightly ThickPavilion 41°Culet: NoneDepth 62.1%

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: £3,236 GBP|Low: £2,488 GBP|High: £3,407 GBP|Avg: £2,932 GBP|-5.0%
Blue Nile
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 2£2,488 GBP
Retailer 5£2,745 GBP
Retailer 4£2,872 GBP
Retailer 3£2,891 GBP
Retailer 6£3,196 GBP
Blue Nile£3,236 GBP

46 data points across 6 retailers

6 retailers£2,488 GBP to £3,196 GBP

A
Cheapest Retailer
-
£2,488 GBP
Retailer 2
-
£2,745 GBP
View
Price last confirmed 11 days ago
Retailer 3
-
£2,872 GBP
View
Price last confirmed 10 days ago
Retailer 4
-
£2,891 GBP
View
Price last confirmed 10 days ago
B+
Retailer 5
-
£3,196 GBP
View
Most Expensive
Blue Nile
29903386 · Oct 24
£3,236 GBP
$4,355 USD
View
Price last confirmed 13 days ago
5 more retailers have this diamond
Prices start from £2,488 GBPSave up to £708 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
£2,488 GBP