Marquise|Natural|GIA

0.51ct J SI2 Marquise Natural Diamond

J/SI2 • GIA 7556641256

Certificate GIA 7556641256

Diamond specifications and retailer prices

From $707 USD
As of November 6, 2026
Save $273 USD (28%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $980 USD 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 $707 to $980, a $273 spread on the same certified stone. MOH London lists it at $980. 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
Color
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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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $980 USD|Low: $637 USD|High: $1,043 USD|Avg: $851 USD|-6.0%
MOH London
Retailer 2
November 6, 2026
Retailer 2$707 USD
MOH London$980 USD

24 data points across 2 retailers

2 retailers$707 USD to $980 USD

B
Cheapest Retailer
-
$707 USD
Most Expensive
C
MOH London
BD028F00B · Nov 1
$980 USD
£772 GBP
View
1 more retailer has this diamond
Prices start from $707 USDSave up to $273 USD

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
$707 USD