Oval|Natural|GIA

1.51ct G SI2 Oval Natural Diamond

EX • G/SI2 • GIA 5231939776

Certificate GIA 5231939776

Diamond specifications and retailer prices

From £3,823 GBP

$5,123 USD

As of October 28, 2026

Save £4,743 GBP (55%) vs most expensive(unlock to see where)

22 retailers carry this diamond

Most expensive: £8,566 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 G 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 5231939776. Listed at 22 retailers as of October 28, 2026, with prices from £3,823 to £8,566, a £4,743 spread on the same certified stone. NZ Jewellers lists it at £8,566. 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

FluorescenceFaint

Pavilion angle36.75°

OriginNatural

Grading LabGIA

CertificateGIA 5231939776

Dimensions8.99 × 6.34 × 4.05 mm

L/W Ratio1.42

View GIA Report →View Loupe360 Video →

Top View

OriginNatural

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceFaint

CertificateGIA 5231939776

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: Oct 28

Current: £8,566 GBP|Low: £3,105 GBP|High: £8,566 GBP|Avg: £4,676 GBP|+16.2%

NZ Jewellers

Retailer 2

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Retailer 21

October 31, 2026

Retailer 10£3,105 GBP

Retailer 12£3,817 GBP

Retailer 21£3,823 GBP

Retailer 8£3,927 GBP

Retailer 9£4,124 GBP

Retailer 5£4,234 GBP

Retailer 11£4,272 GBP

Retailer 19£4,283 GBP

Retailer 15£4,328 GBP

Retailer 14£4,339 GBP

Retailer 18£4,430 GBP

Retailer 16£4,771 GBP

Retailer 4£4,876 GBP

Retailer 17£4,941 GBP

Retailer 2£4,960 GBP

Retailer 3£5,217 GBP

Retailer 6£5,217 GBP

Retailer 13£5,320 GBP

Retailer 7£5,389 GBP

Retailer 20£7,556 GBP

NZ Jewellers£8,566 GBP

31 data points across 21 retailers

22 retailers£3,823 GBP to £8,566 GBP

Retailer 1

£3,105 GBP

HK$32,500 HKD

Price last confirmed 17 days ago

Retailer 2

£3,817 GBP

$5,114 USD

View

Price last confirmed 11 days ago

Retailer 3

£3,823 GBP

$5,123 USD

View

Retailer 4

£3,927 GBP

SGD 7,110 SGD

View

Price last confirmed 16 days ago

Retailer 5

£4,124 GBP

View

Price last confirmed 16 days ago

Retailer 6

£4,234 GBP

$5,673 USD

View

Retailer 7

£4,272 GBP

$5,724 USD

View

Price last confirmed 24 days ago

B+

Retailer 8

£4,283 GBP

$5,739 USD

View

Final sale: no returns

Retailer 9

£4,328 GBP

CA$8,054 CAD

View

Retailer 10

£4,339 GBP

$5,814 USD

View

Price last confirmed 32 days ago

Retailer 11

£4,430 GBP

$5,936 USD

View

B+

Retailer 12

£4,771 GBP

$6,393 USD

View

B+

Retailer 13

£4,876 GBP

$6,533 USD

View

B+

Retailer 14

£4,941 GBP

$6,621 USD

View

B+

Retailer 15

£4,960 GBP

View

B+

Retailer 16

£5,217 GBP

$6,990 USD

View

B+

Retailer 17

£5,217 GBP

$6,990 USD

View

B+

Retailer 18

£5,320 GBP

€6,789 EUR

View

B+

Retailer 19

£5,389 GBP

$7,220 USD

View

Retailer 20

£7,145 GBP

$9,573 USD

View

Price last confirmed 22 days ago

Retailer 21

£7,556 GBP

View

Most Expensive

NZ Jewellers

ecc6dc5c-dc11-47c2-bc80-334fc94d5ca7 · Oct 30

£8,566 GBP

$11,478 USD

View

21 more retailers have this diamond

Prices start from £3,823 GBPSave up to £4,743 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

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