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Marquise|Natural|GIA

0.83ct J SI1 Marquise Natural Diamond

EX • J/SI1 • GIA 6551275934

Certificate GIA 6551275934

Diamond specifications and retailer prices

From $646 AUD
$453 USD
As of November 2, 2026
Save $724 AUD (53%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $1,370 AUD at 77 Diamonds · As of November 1, 2026
View at 77 Diamonds

About this 0.83ct natural marquise diamond

This 0.83ct natural marquise sits in the just-under-one-carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6551275934. Listed at 3 retailers as of November 1, 2026, with prices from $646 to $1,370, a $724 spread on the same certified stone. 77 Diamonds lists it at $1,370. 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

0.83
Carat
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
OriginNatural
Grading LabGIA
CertificateGIA 6551275934
Dimensions8.95 × 4.73 × 2.70 mm
L/W Ratio1.89
Top View
8.95 mm4.73 mm0.83 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 6551275934
Side View
Table 64.0%CrownGirdle: THN-THKPavilionCulet: NoneDepth 57.0%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 2
Current: $1,370 AUD|Low: $626 AUD|High: $1,473 AUD|Avg: $931 AUD|-0.0%
77 Diamonds
Retailer 2
Retailer 3
November 2, 2026
Retailer 3$646 AUD
Retailer 2$683 AUD
77 Diamonds$1,370 AUD

43 data points across 3 retailers

3 retailers$646 AUD to $1,370 AUD

A
Cheapest Retailer
-
$646 AUD
$453 USD
Final sale: no returns
A
Retailer 2
-
$683 AUD
₹45,567 INR
View
Most Expensive
A
77 Diamonds
MQCPTRSHWZ6C · Nov 1
$1,370 AUD
£756 GBP
View
2 more retailers have this diamond
Prices start from $646 AUDSave up to $724 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.

A
0.83ct Marquise
$646 AUD