Marquise|Natural|GSI

1.51ct I I1 Marquise Natural Diamond

EX • I/I1

Diamond specifications and retailer prices

From $12,022 AUD

$8,425 USD

As of October 26, 2026

1 retailer carries this diamond

Only listing: $12,022 AUD at Shane Co

Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.

View at Shane Co

About this 1.51ct natural marquise diamond

This 1.51ct natural marquise sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and I1 clarity (included), with a top-tier cut grade and certified by GSI. Listed at a single retailer as of October 26, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51

Carat

Colour

Clarity

Excellent

Cut

Specifications

CutExcellent

PolishVery Good

SymmetryVery Good

FluorescenceFaint

OriginNatural

Grading LabGSI

Dimensions12.17 × 5.77 mm

L/W Ratio2.11

Top View

OriginNatural

CutExcellent

PolishVery Good

SymmetryVery Good

FluorescenceFaint

CertificateGSI

Side View

Caratlytics Score

No score right now

No retailer has confirmed this stone recently, so we are not scoring it. Prices below are as of the date shown.

Price History

Last verified: Oct 26

Current: $12,022 AUD|Low: $12,022 AUD|High: $12,022 AUD|Avg: $12,022 AUD

October 5, 2026

Shane Co$12,022 AUD

1 data point across 1 retailer

1 retailer

Shane Co

26H0W27 · Oct 26

$12,022 AUD

$8,425 USD

View

Price last confirmed 7 days ago

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 Marquise

$12,022 AUD