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Marquise|Natural|GIA

0.78ct J SI2 Marquise Natural Diamond

EX • J/SI2 • GIA 5556669780

Certificate GIA 5556669780

Diamond specifications and retailer prices

From $1,147 USD
As of October 31, 2026
1 retailer carries this diamond
Only listing: $1,147 USD at The Diamond Guys
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 The Diamond Guys

About this 0.78ct natural marquise diamond

This 0.78ct natural marquise sits in the just-under-one-carat band, graded J 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 5556669780. Listed at a single retailer as of October 31, 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

0.78
Carat
J
Color
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.73°
Pavilion angle39.04°
OriginNatural
Grading LabGIA
CertificateGIA 5556669780
Dimensions9.23 × 4.78 × 2.96 mm
L/W Ratio1.93
Culet sizeNone
Top View
9.23 mm4.78 mm0.78 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5556669780
Side View
Table 59.0%Crown 38.73°Girdle: STK-VTKPavilion 39.04°Culet: NoneDepth 62.0%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Oct 31
Current: $905 USD|Low: $607 USD|High: $1,503 USD|Avg: $1,108 USD|-3.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
The Diamond Guys
September 4, 2026
Retailer 11$607 USD
Retailer 6$826 USD
Retailer 4$855 USD
Retailer 7$900 USD
Retailer 1$905 USD
Retailer 9$953 USD
Retailer 5$1,036 USD
The Diamond Guys$1,147 USD
Retailer 10$1,235 USD
Retailer 8$1,311 USD
Retailer 3$1,493 USD
Retailer 2$1,502 USD

31 data points across 12 retailers

1 retailer

B+
The Diamond Guys
1964687527 · Oct 31
$1,147 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+
0.78ct Marquise
$1,147 USD