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Marquise|Natural|GIA

0.51ct E SI2 Marquise Natural Diamond

EX • E/SI2 • GIA 6542475233

Certificate GIA 6542475233

Diamond specifications and retailer prices

From $1,300 AUD
As of November 5, 2026
Save $729 AUD (36%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $2,029 AUD at Diamond Exchange Canada · As of November 5, 2026
View at Diamond Exchange Canada

About this 0.51ct natural marquise diamond

This 0.51ct natural marquise sits in the half to three-quarter carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6542475233. Listed at 9 retailers as of November 5, 2026, with prices from $1,300 to $2,029, a $729 spread on the same certified stone. Diamond Exchange Canada lists it at $2,029. 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

0.51
Carat
E
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle33.36°
OriginNatural
Grading LabGIA
CertificateGIA 6542475233
Dimensions8.28 × 4.34 × 2.52 mm
L/W Ratio1.91
Top View
8.28 mm4.34 mm0.51 ctE / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6542475233
Side View
Table 63.0%Crown 33.36°Girdle: Sli. ThickPavilionCulet: NoneDepth 58.0%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $2,029 AUD|Low: $1,150 AUD|High: $2,029 AUD|Avg: $1,444 AUD
Diamond Exchange Canada
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 6, 2026
Retailer 4$1,150 AUD
Retailer 13$1,171 AUD
Retailer 3$1,177 AUD
Retailer 5$1,263 AUD
Retailer 7$1,300 AUD
Retailer 9$1,400 AUD
Retailer 10$1,400 AUD
Retailer 12$1,409 AUD
Retailer 8$1,443 AUD
Retailer 2$1,624 AUD
Retailer 6$1,653 AUD
Retailer 11$1,770 AUD
Diamond Exchange Canada$2,029 AUD

43 data points across 13 retailers

9 retailers$1,300 AUD to $2,029 AUD

B+
Cheapest Retailer
-
$1,300 AUD
B+
Retailer 2
-
$1,400 AUD
View
B+
Retailer 3
-
$1,400 AUD
View
B+
Retailer 4
-
$1,409 AUD
View
B+
Retailer 5
-
$1,443 AUD
View
B+
Retailer 6
-
$1,624 AUD
View
B+
Retailer 7
-
$1,653 AUD
View
B
Retailer 8
-
$1,770 AUD
View
Most Expensive
B
Diamond Exchange Canada
1984739230 · Nov 5
$2,029 AUD
CA$1,973 CAD
View
8 more retailers have this diamond
Prices start from $1,300 AUDSave up to $729 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
$1,300 AUD