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Oval|Natural|GIA

1.25ct J SI1 Oval Natural Diamond

EX • J/SI1 • GIA 2537454393

Certificate GIA 2537454393

Diamond specifications and retailer prices

From £1,657 GBP
As of November 2, 2026
Save £1,895 GBP (53%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £3,553 GBP at NZ Jewellers · As of November 2, 2026
View at NZ Jewellers

About this 1.25ct natural oval diamond

This 1.25ct natural oval sits in the one-and-a-quarter to one-and-a-half carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2537454393. Listed at 8 retailers as of November 2, 2026, with prices from £1,657 to £3,553, a £1,895 spread on the same certified stone. NZ Jewellers lists it at £3,553. 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
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle37.54°
Pavilion angle35.69°
OriginNatural
Grading LabGIA
CertificateGIA 2537454393
Dimensions8.79 × 6.06 × 3.46 mm
L/W Ratio1.45
Top View
8.79 mm6.06 mm1.25 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2537454393
Side View
Table 58.0%Crown 37.54°GirdlePavilion 35.69°Culet: NoneDepth 57.1%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: £3,553 GBP|Low: £1,657 GBP|High: £3,621 GBP|Avg: £2,204 GBP|-1.9%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 4£1,657 GBP
Retailer 6£1,661 GBP
Retailer 5£1,699 GBP
Retailer 7£1,703 GBP
Retailer 3£1,777 GBP
Retailer 9£1,937 GBP
Retailer 8£2,132 GBP
Retailer 2£2,976 GBP
NZ Jewellers£3,553 GBP

33 data points across 9 retailers

8 retailers£1,657 GBP to £3,553 GBP

A
Cheapest Retailer
-
£1,657 GBP
A
Retailer 2
-
£1,661 GBP
View
A
Retailer 3
-
£1,699 GBP
View
A
Retailer 4
-
£1,703 GBP
View
A
Retailer 5
-
£1,777 GBP
View
Retailer 6
-
£2,132 GBP
View
Price last confirmed 30 days ago
B
Retailer 7
-
£2,976 GBP
View
Most Expensive
B
NZ Jewellers
4834c5c6-569e-487c-8bde-65b0d5e845c8 · Nov 2
£3,553 GBP
$4,755 USD
View
7 more retailers have this diamond
Prices start from £1,657 GBPSave up to £1,895 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 Oval
£1,657 GBP