Oval|Natural|GIA

1.51ct I SI1 Oval Natural Diamond

VG • I/SI1 • GIA 5563429291

Certificate GIA 5563429291

Diamond specifications and retailer prices

From £3,794 GBP

$5,091 USD

As of November 2, 2026

Save £4,524 GBP (54%) vs most expensive(unlock to see where)

31 retailers carry this diamond

Most expensive: £8,318 GBP at NZ Jewellers · As of October 30, 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 SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 5563429291. Listed at 31 retailers as of October 30, 2026, with prices from £3,794 to £8,318, a £4,524 spread on the same certified stone. NZ Jewellers lists it at £8,318. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.51

Carat

Colour

SI1

Clarity

Very Good

Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good

PolishExcellent

SymmetryExcellent

FluorescenceFaint

OriginNatural

Grading LabGIA

CertificateGIA 5563429291

Dimensions8.65 × 6.25 × 4.06 mm

L/W Ratio1.38

Culet sizeNone

Key to symbols

Feather, Crystal, Cavity, Needle

View GIA Report →View Loupe360 Video →

Top View

OriginNatural

CutVery Good

PolishExcellent

SymmetryExcellent

FluorescenceFaint

CertificateGIA 5563429291

Side View

Caratlytics Score

How it works →

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: £8,318 GBP|Low: £3,794 GBP|High: £8,318 GBP|Avg: £4,896 GBP

NZ Jewellers

Retailer 2

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Retailer 30

November 2, 2026

Retailer 9£3,794 GBP

Retailer 11£3,885 GBP

Retailer 16£3,929 GBP

Retailer 6£3,932 GBP

Retailer 15£3,981 GBP

Retailer 10£4,159 GBP

Retailer 3£4,199 GBP

Retailer 29£4,321 GBP

Retailer 14£4,422 GBP

Retailer 28£4,443 GBP

Retailer 5£4,505 GBP

Retailer 8£4,505 GBP

Retailer 30£4,505 GBP

Retailer 7£4,555 GBP

Retailer 4£4,587 GBP

Retailer 22£4,697 GBP

Retailer 17£4,701 GBP

Retailer 2£4,719 GBP

Retailer 25£4,770 GBP

Retailer 19£4,932 GBP

Retailer 12£5,023 GBP

Retailer 21£5,023 GBP

Retailer 18£5,092 GBP

Retailer 13£5,131 GBP

Retailer 20£5,187 GBP

Retailer 27£5,199 GBP

Retailer 26£6,111 GBP

Retailer 23£7,209 GBP

Retailer 24£7,327 GBP

NZ Jewellers£8,318 GBP

8 data points across 30 retailers

31 retailers£3,794 GBP to £8,318 GBP

Cheapest Retailer

£3,794 GBP

$5,091 USD

B+

Retailer 2

£3,885 GBP

$5,214 USD

View

B+

Retailer 3

£3,929 GBP

$5,273 USD

View

B+

Retailer 4

£3,932 GBP

$5,276 USD

View

B+

Retailer 5

£3,981 GBP

$5,343 USD

View

B+

Retailer 6

£4,085 GBP

A$8,434 AUD

View

B+

Retailer 7

£4,099 GBP

$5,501 USD

View

B+

Retailer 8

£4,159 GBP

$5,581 USD

View

Final sale: no returns

B+

Retailer 9

£4,199 GBP

$5,635 USD

View

B+

Retailer 10

£4,321 GBP

CA$8,053 CAD

View

B+

Retailer 11

£4,422 GBP

$5,934 USD

View

B+

Retailer 12

£4,443 GBP

$5,963 USD

View

B+

Retailer 13

£4,505 GBP

$6,046 USD

View

B+

Retailer 14

£4,505 GBP

$6,046 USD

View

B+

Retailer 15

£4,505 GBP

$6,046 USD

View

B+

Retailer 16

£4,587 GBP

$6,156 USD

View

B+

Retailer 17

£4,697 GBP

$6,303 USD

View

B+

Retailer 18

£4,701 GBP

$6,308 USD

View

B+

Retailer 19

£4,719 GBP

View

B+

Retailer 20

£4,770 GBP

View

Retailer 21

£4,932 GBP

$6,619 USD

View

Retailer 22

£5,023 GBP

$6,740 USD

View

Retailer 23

£5,023 GBP

$6,740 USD

View

Retailer 24

£5,092 GBP

$6,833 USD

View

Retailer 25

£5,131 GBP

€6,558 EUR

View

Retailer 26

£5,187 GBP

$6,960 USD

View

Retailer 27

£5,199 GBP

$6,977 USD

View

Retailer 28

£6,111 GBP

ZAR 132,471 ZAR

View

Retailer 29

£7,209 GBP

$9,674 USD

View

Retailer 30

£7,327 GBP

View

Most Expensive

NZ Jewellers

7dfffc9e-415c-4cce-b8dd-c391752c098f · Oct 30

£8,318 GBP

$11,162 USD

View

30 more retailers have this diamond

Prices start from £3,794 GBPSave up to £4,524 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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1.51ct Oval

£3,794 GBP