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Round|Natural|GIA

1.26ct J SI2 Round Natural Diamond

EX • J/SI2 • GIA 2558086718

Certificate GIA 2558086718

Diamond specifications and retailer prices

From £1,723 GBP
$2,309 USD
As of November 2, 2026
Save £2,179 GBP (56%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £3,903 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 GIA 2558086718. Listed at 6 retailers as of October 30, 2026, with prices from £1,723 to £3,903, a £2,179 spread on the same certified stone. NZ Jewellers lists it at £3,903. 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
FluorescenceFaint
Crown angle34.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 2558086718
Dimensions6.88 × 6.92 × 4.33 mm
L/W Ratio1.01
Star length55%
Culet sizeNone
Key to symbols
Cloud, Crystal, Needle, Natural
Top View
6.88 mm6.92 mm1.26 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2558086718
Side View
Table 56.0%Crown 34.5°Girdle: MED-STKPavilion 41.2°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 2
Current: £3,903 GBP|Low: £1,357 GBP|High: £3,903 GBP|Avg: £2,502 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 2, 2026
Retailer 5£1,723 GBP
Retailer 6£1,820 GBP
Retailer 4£2,190 GBP
Retailer 2£2,200 GBP
Retailer 3£3,271 GBP
NZ Jewellers£3,903 GBP

27 data points across 6 retailers

6 retailers£1,723 GBP to £3,903 GBP

A
Cheapest Retailer
-
£1,723 GBP
$2,309 USD
Final sale: no returns
A
Retailer 2
-
£1,820 GBP
$2,438 USD
View
B+
Retailer 3
-
£2,190 GBP
View
B+
Retailer 4
-
£2,200 GBP
€2,807 EUR
View
B
Retailer 5
-
£3,271 GBP
View
Most Expensive
B
NZ Jewellers
9ff11a1b-c01f-436d-ac0d-ee41d124acd3 · Oct 30
£3,903 GBP
$5,229 USD
View
5 more retailers have this diamond
Prices start from £1,723 GBPSave up to £2,179 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
£1,723 GBP