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1.26ct J SI2 Round Natural Diamond

EX • J/SI2 • IGI 839696421

Shape and cutting style on the report: Round brilliant

Certificate IGI 839696421

Diamond specifications and retailer prices

From £873 GBP
As of October 30, 2026
Save £1,333 GBP (60%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £2,205 GBP at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.26ct natural round diamond

This 1.26ct natural round sits in the one-and-a-quarter to one-and-a-half carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI 839696421. Listed at 8 retailers as of October 30, 2026, with prices from £873 to £2,205, a £1,333 spread on the same certified stone. NZ Jewellers lists it at £2,205. 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

1.26
Carat
J
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.4°
Pavilion angle41°
OriginNatural
Grading LabIGI
CertificateIGI 839696421
Dimensions6.82 × 6.87 × 4.32 mm
L/W Ratio1.01
Girdle conditionFaceted
Top View
6.82 mm6.87 mm1.26 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 839696421
Side View
Table 58.0%Crown 36.4°Girdle: MED-STKPavilion 41°Culet: NoneDepth 63.0%

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: Oct 30
Current: £2,205 GBP|Low: £870 GBP|High: £2,205 GBP|Avg: £1,244 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 2, 2026
Retailer 3£873 GBP
Retailer 7£905 GBP
Retailer 5£939 GBP
Retailer 8£952 GBP
Retailer 6£1,010 GBP
Retailer 2£1,253 GBP
Retailer 4£1,665 GBP
NZ Jewellers£2,205 GBP

17 data points across 8 retailers

8 retailers£873 GBP to £2,205 GBP

A
Cheapest Retailer
-
£873 GBP
A
Retailer 2
-
£905 GBP
$1,212 USD
View
A
Retailer 3
-
£939 GBP
$1,258 USD
View
A
Retailer 4
-
£952 GBP
$1,275 USD
View
A
Retailer 5
-
£1,010 GBP
$1,354 USD
View
A
Retailer 6
-
£1,253 GBP
€1,599 EUR
View
A
Retailer 7
-
£1,665 GBP
View
Most Expensive
B
NZ Jewellers
f2405b3e-dde7-419b-8f64-bf87b0b779d8 · Oct 30
£2,205 GBP
$2,955 USD
View
7 more retailers have this diamond
Prices start from £873 GBPSave up to £1,333 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
1.26ct Round
£873 GBP