Oval|Natural|GIA

1.51ct I SI2 Oval Natural Diamond

EX • I/SI2 • GIA 6555458202

Certificate GIA 6555458202

Diamond specifications and retailer prices

From £4,163 GBP

$5,578 USD

As of October 28, 2026

Save £4,706 GBP (53%) vs most expensive(unlock to see where)

19 retailers carry this diamond

Most expensive: £8,869 GBP at NZ Jewellers · As of October 27, 2026

View at NZ Jewellers

About this 1.51ct natural oval diamond

This 1.51ct natural oval sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6555458202. Listed at 19 retailers as of October 27, 2026, with prices from £4,163 to £8,869, a £4,706 spread on the same certified stone. NZ Jewellers lists it at £8,869. 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

1.51

Carat

Colour

SI2

Clarity

Excellent

Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle38.3°

Pavilion angle36.4°

OriginNatural

Grading LabGIA

CertificateGIA 6555458202

Dimensions9.12 × 6.38 × 3.97 mm

L/W Ratio1.43

Culet sizeNone

Key to symbols

Twinning Wisp, Feather, Crystal, Needle

View GIA Report →View Loupe360 Video →

Top View

OriginNatural

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateGIA 6555458202

Side View

Caratlytics Score

How it works →

B+

Very Good

Strong quality and value balance

Unlock full score analysis

See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 28

Current: £8,869 GBP|Low: £4,392 GBP|High: £8,869 GBP|Avg: £5,700 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

October 29, 2026

Retailer 10£4,392 GBP

Retailer 9£4,447 GBP

Retailer 3£4,647 GBP

Retailer 4£4,894 GBP

Retailer 12£4,894 GBP

Retailer 2£5,069 GBP

Retailer 6£5,202 GBP

Retailer 8£5,303 GBP

Retailer 11£5,384 GBP

Retailer 5£5,517 GBP

Retailer 13£6,118 GBP

Retailer 7£7,854 GBP

NZ Jewellers£8,869 GBP

41 data points across 13 retailers

19 retailers£4,163 GBP to £8,869 GBP

B+

Cheapest Retailer

£4,163 GBP

$5,578 USD

Retailer 2

£4,392 GBP

$5,885 USD

View

Price last confirmed 13 days ago

B+

Retailer 3

£4,447 GBP

SGD 8,052 SGD

View

B+

Retailer 4

£4,624 GBP

$6,196 USD

View

B+

Retailer 5

£4,647 GBP

$6,227 USD

View

B+

Retailer 6

£4,894 GBP

$6,558 USD

View

Final sale: no returns

Retailer 7

£4,894 GBP

$6,558 USD

View

Price last confirmed 7 days ago

B+

Retailer 8

£5,069 GBP

View

B+

Retailer 9

£5,202 GBP

View

Retailer 10

£5,232 GBP

$7,010 USD

View

Retailer 11

£5,303 GBP

$7,105 USD

View

Price last confirmed 68 days ago

Retailer 12

£5,303 GBP

$7,105 USD

View

Retailer 13

£5,384 GBP

$7,214 USD

View

Retailer 14

£5,423 GBP

$7,266 USD

View

Retailer 15

£5,517 GBP

$7,392 USD

View

Retailer 16

£6,118 GBP

$8,198 USD

View

Retailer 17

£6,118 GBP

$8,198 USD

View

Price last confirmed 33 days ago

Retailer 18

£7,854 GBP

View

Most Expensive

NZ Jewellers

1f934872-43fd-4ffb-8f38-2d02d3b5b9af · Oct 27

£8,869 GBP

$11,883 USD

View

18 more retailers have this diamond

Prices start from £4,163 GBPSave up to £4,706 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.

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B+

1.51ct Oval

£4,163 GBP