Marquise|Natural|GIA

0.51ct J IF Marquise Natural Diamond

EX • J/IF • GIA 6541800432

Certificate GIA 6541800432

Diamond specifications and retailer prices

From £410 GBP

HK$4,300 HKD

As of October 30, 2026

Save £761 GBP (65%) vs most expensive(unlock to see where)

15 retailers carry this diamond

Most expensive: £1,681 GBP at NZ Jewellers · As of September 25, 2026

View at NZ Jewellers

About this 0.51ct natural marquise diamond

This 0.51ct natural marquise sits in the half to three-quarter carat band, graded J colour (near-colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6541800432. Listed at 15 retailers as of October 29, 2026, with a 186% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Flawless clarity in sub-one-carat stones is rarely visible to the naked eye over VS1, so you are paying a meaningful premium for grade rather than appearance.

The 4Cs

0.51

Carat

Colour

Clarity

Excellent

Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent

PolishVery Good

SymmetryVery Good

FluorescenceNone

Pavilion angle39°

OriginNatural

Grading LabGIA

CertificateGIA 6541800432

Dimensions8.09 × 4.17 × 2.59 mm

L/W Ratio1.94

View GIA Report →View Loupe360 Video →

Top View

OriginNatural

CutExcellent

PolishVery Good

SymmetryVery Good

FluorescenceNone

CertificateGIA 6541800432

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 30

Current: £554 GBP|Low: £349 GBP|High: £1,216 GBP|Avg: £654 GBP|+1.0%

Retailer 1

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

October 30, 2026

Retailer 11£410 GBP

Retailer 3£455 GBP

Retailer 13£466 GBP

Retailer 5£510 GBP

Retailer 10£515 GBP

Retailer 1£554 GBP

Retailer 14£636 GBP

Retailer 15£641 GBP

Retailer 6£658 GBP

Retailer 4£693 GBP

Retailer 8£696 GBP

Retailer 12£726 GBP

Retailer 9£770 GBP

Retailer 7£782 GBP

Retailer 2£1,172 GBP

33 data points across 15 retailers

15 retailers£410 GBP to £1,172 GBP

Cheapest Retailer

£410 GBP

HK$4,300 HKD

Retailer 2

£455 GBP

$610 USD

View

Retailer 3

£510 GBP

SGD 924 SGD

View

Price last confirmed 11 days ago

Retailer 4

£515 GBP

$691 USD

View

Retailer 5

£554 GBP

View

B+

Retailer 6

£636 GBP

$853 USD

View

B+

Retailer 7

£641 GBP

$860 USD

View

B+

Retailer 8

£658 GBP

$883 USD

View

B+

Retailer 9

£693 GBP

$930 USD

View

B+

Retailer 10

£696 GBP

€889 EUR

View

Retailer 11

£726 GBP

$974 USD

View

Price last confirmed 10 days ago

Retailer 12

£770 GBP

ZAR 16,699 ZAR

View

Price last confirmed 12 days ago

Retailer 13

£782 GBP

A$1,615 AUD

View

Price last confirmed 29 days ago

Retailer 14

£1,172 GBP

View

Most Expensive

NZ Jewellers

c2470ebc-5229-4a66-b206-151c4eaee846 · Sep 25

£1,681 GBP

$2,256 USD

View

Price last confirmed 38 days ago

14 more retailers have this diamond

Prices start from £410 GBPSave up to £761 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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