Oval|Natural|GSI

1.51ct J I1 Oval Natural Diamond

ID • J/I1

Diamond specifications and retailer prices

From £4,270 GBP

$5,730 USD

As of November 2, 2026

1 retailer carries this diamond

Only listing: £4,270 GBP at Shane Co

Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.

View at Shane Co

About this 1.51ct natural oval diamond

This 1.51ct natural oval sits in the one-and-a-half to two carat band, graded J colour (near-colourless) and I1 clarity (included), with a top-tier cut grade and certified by GSI. Listed at a single retailer as of November 2, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51

Carat

Colour

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

OriginNatural

Grading LabGSI

Dimensions8.62 × 6.54 mm

L/W Ratio1.32

Top View

OriginNatural

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateGSI

Side View

Caratlytics Score

How it works →

Average

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Price History

Last verified: Nov 2

Current: £4,270 GBP|Low: £4,270 GBP|High: £4,911 GBP|Avg: £4,590 GBP|-13.1%

September 18, 2026

Shane Co£4,270 GBP

2 data points across 1 retailer

1 retailer

Shane Co

26E0WQT · Nov 2

£4,270 GBP

$5,730 USD

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1.51ct Oval

£4,270 GBP