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Marquise|Natural|GIA

0.51ct J SI2 Marquise Natural Diamond

J/SI2 • GIA 7556641256

Certificate GIA 7556641256

Diamond specifications and retailer prices

From $1,029 AUD
As of November 6, 2026
Save $398 AUD (28%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $1,427 AUD at MOH London · As of November 1, 2026
View at MOH London

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 SI2 clarity (slightly-included) and certified by GIA 7556641256. Listed at 2 retailers as of November 1, 2026, with prices from $1,029 to $1,427, a $398 spread on the same certified stone. MOH London lists it at $1,427. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.51
Carat
J
Colour
SI2
Clarity
-
Cut

Specifications

Cut
PolishGood
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 7556641256
Dimensions8.14 × 4.18 × 2.62 mm
L/W Ratio1.95
Culet sizeNone
Key to symbols
Crystal
Top View
8.14 mm4.18 mm0.51 ctJ / SI2
OriginNatural
PolishGood
SymmetryVery Good
FluorescenceMedium
CertificateGIA 7556641256
Side View
Table 59.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 62.5%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 6
Current: $1,427 AUD|Low: $927 AUD|High: $1,518 AUD|Avg: $1,238 AUD|-6.0%
MOH London
Retailer 2
November 6, 2026
Retailer 2$1,029 AUD
MOH London$1,427 AUD

24 data points across 2 retailers

2 retailers$1,029 AUD to $1,427 AUD

B
Cheapest Retailer
-
$1,029 AUD
Most Expensive
C
MOH London
BD028F00B · Nov 1
$1,427 AUD
£772 GBP
View
1 more retailer has this diamond
Prices start from $1,029 AUDSave up to $398 AUD

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
0.51ct Marquise
$1,029 AUD