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Marquise|Natural|GIA

0.81ct H SI2 Marquise Natural Diamond

EX • H/SI2 • GIA 6511771940

Certificate GIA 6511771940

Diamond specifications and retailer prices

From €1,734 EUR
$1,945 USD
As of November 2, 2026
1 retailer carries this diamond
Only listing: €1,734 EUR 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 0.81ct natural marquise diamond

This 0.81ct natural marquise sits in the just-under-one-carat band, graded H 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 6511771940. Listed at a single retailer as of November 2, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. 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

0.81
Carat
H
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.68°
Pavilion angle40.64°
OriginNatural
Grading LabGIA
CertificateGIA 6511771940
Dimensions9.73 × 4.75 mm
L/W Ratio2.05
Top View
9.73 mm4.75 mm0.81 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6511771940
Side View
Table 60.0%Crown 37.68°Girdle: STK-THKPavilion 40.64°Culet: NoneDepth 64.0%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 2
Current: €1,734 EUR|Low: €1,730 EUR|High: €1,863 EUR|Avg: €1,802 EUR|-5.1%
June 18, 2026
Shane Co€1,734 EUR

7 data points across 1 retailer

1 retailer

B
Shane Co
25F02BN · Nov 2
€1,734 EUR
$1,945 USD
View

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.

B
0.81ct Marquise
€1,734 EUR