Marquise|Natural|GIA

1.51ct D SI1 Marquise Natural Diamond

EX • D/SI1 • GIA 7546359548

Certificate GIA 7546359548

Diamond specifications and retailer prices

From £8,606 GBP

A$17,739 AUD

As of November 1, 2026

Save £6,201 GBP (42%) vs most expensive(unlock to see where)

16 retailers carry this diamond

Most expensive: £14,806 GBP at MOH London · As of November 1, 2026

View at MOH London

About this 1.51ct natural marquise diamond

This 1.51ct natural marquise sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 7546359548. Listed at 16 retailers as of November 1, 2026, with prices from £8,606 to £14,806, a £6,201 spread on the same certified stone. MOH London lists it at £14,806. 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

SI1

Clarity

Excellent

Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent

PolishExcellent

SymmetryVery Good

FluorescenceNone

Crown angle32.98°

Pavilion angle40.36°

OriginNatural

Grading LabGIA

CertificateGIA 7546359548

Dimensions11.45 × 6.22 × 3.71 mm

L/W Ratio1.84

Girdle conditionVery Thick

Key to symbols

Feather, Cloud, Pinpoint

View GIA Report →View Loupe360 Video →

Top View

OriginNatural

CutExcellent

PolishExcellent

SymmetryVery Good

FluorescenceNone

CertificateGIA 7546359548

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: Nov 1

Current: £14,806 GBP|Low: £8,335 GBP|High: £14,984 GBP|Avg: £11,390 GBP|-1.2%

MOH London

Retailer 2

Retailer 3

Retailer 4

Retailer 5

Retailer 6

Retailer 7

Retailer 8

Retailer 9

Retailer 10

November 2, 2026

Retailer 8£8,606 GBP

Retailer 10£10,028 GBP

Retailer 4£10,118 GBP

Retailer 9£10,177 GBP

Retailer 7£10,464 GBP

Retailer 2£10,606 GBP

Retailer 5£11,336 GBP

Retailer 3£11,941 GBP

Retailer 6£13,928 GBP

MOH London£14,806 GBP

32 data points across 10 retailers

16 retailers£8,606 GBP to £14,806 GBP

B+

Cheapest Retailer

£8,606 GBP

A$17,739 AUD

Retailer 2

£9,593 GBP

$12,853 USD

View

Retailer 3

£9,709 GBP

$13,009 USD

View

Retailer 4

£10,028 GBP

$13,437 USD

View

Final sale: no returns

B+

Retailer 5

£10,118 GBP

View

Retailer 6

£10,177 GBP

A$20,979 AUD

View

Price last confirmed 9 days ago

Retailer 7

£10,273 GBP

$13,765 USD

View

Retailer 8

£10,464 GBP

$14,021 USD

View

Retailer 9

£10,464 GBP

$14,021 USD

View

Price last confirmed 17 days ago

B+

Retailer 10

£10,606 GBP

View

Retailer 11

£11,129 GBP

$14,911 USD

View

Retailer 12

£11,336 GBP

$15,189 USD

View

Retailer 13

£11,773 GBP

$15,774 USD

View

Price last confirmed 44 days ago

Retailer 14

£11,941 GBP

€15,238 EUR

View

Retailer 15

£13,928 GBP

ZAR 301,479 ZAR

View

Most Expensive

MOH London

C167A3398 · Nov 1

£14,806 GBP

View

15 more retailers have this diamond

Prices start from £8,606 GBPSave up to £6,201 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 Marquise

£8,606 GBP