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Oval|Natural|GIA

1.26ct J SI1 Oval Natural Diamond

ID • J/SI1 • GIA 1535255578

Certificate GIA 1535255578

Diamond specifications and retailer prices

From £1,738 GBP
As of November 6, 2026
Save £2,215 GBP (56%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £3,953 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.26ct natural oval diamond

This 1.26ct 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 1535255578. Listed at 16 retailers as of November 5, 2026, with prices from £1,738 to £3,953, a £2,215 spread on the same certified stone. NZ Jewellers lists it at £3,953. 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
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Pavilion angle41.3°
OriginNatural
Grading LabGIA
CertificateGIA 1535255578
Dimensions8.58 × 6.11 × 3.84 mm
L/W Ratio1.40
Girdle conditionFaceted
Top View
8.58 mm6.11 mm1.26 ctJ / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1535255578
Side View
Table 61.0%CrownGirdle: MED-STKPavilion 41.3°Culet: NoneDepth 62.9%

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: £3,953 GBP|Low: £1,724 GBP|High: £4,186 GBP|Avg: £2,665 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
November 6, 2026
Retailer 7£1,738 GBP
Retailer 4£1,990 GBP
Retailer 3£2,027 GBP
Retailer 8£2,068 GBP
Retailer 6£2,119 GBP
Retailer 5£2,253 GBP
Retailer 11£2,253 GBP
Retailer 2£2,368 GBP
Retailer 12£2,368 GBP
Retailer 14£2,368 GBP
Retailer 13£2,443 GBP
Retailer 16£2,578 GBP
Retailer 10£2,656 GBP
Retailer 15£3,303 GBP
Retailer 9£3,783 GBP
NZ Jewellers£3,953 GBP

42 data points across 16 retailers

16 retailers£1,738 GBP to £3,953 GBP

A
Cheapest Retailer
-
£1,738 GBP
A
Retailer 2
-
£1,990 GBP
View
B+
Retailer 3
-
£2,027 GBP
View
B+
Retailer 4
-
£2,068 GBP
View
Final sale: no returns
B+
Retailer 5
-
£2,119 GBP
View
B+
Retailer 6
-
£2,253 GBP
View
B+
Retailer 7
-
£2,253 GBP
View
B+
Retailer 8
-
£2,368 GBP
View
B+
Retailer 9
-
£2,368 GBP
View
B+
Retailer 10
-
£2,368 GBP
View
B+
Retailer 11
-
£2,443 GBP
View
B
Retailer 12
-
£2,578 GBP
View
B+
Retailer 13
-
£2,656 GBP
View
B
Retailer 14
-
£3,303 GBP
View
B
Retailer 15
-
£3,783 GBP
View
Most Expensive
B
NZ Jewellers
5f0002ef-21a3-47f2-8d24-ae64bb36df46 · Nov 5
£3,953 GBP
$5,291 USD
View
15 more retailers have this diamond
Prices start from £1,738 GBPSave up to £2,215 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 Oval
£1,738 GBP