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Marquise|Natural|GIA

0.50ct E SI1 Marquise Natural Diamond

EX • E/SI1 • GIA 2557165660

Certificate GIA 2557165660

Diamond specifications and retailer prices

From $833 AUD
As of November 6, 2026
Save $2,610 AUD (76%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $3,443 AUD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 0.5ct natural marquise diamond

This 0.5ct natural marquise sits in the half to three-quarter carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2557165660. Listed at 13 retailers as of November 5, 2026, with prices from $833 to $3,443, a $2,610 spread on the same certified stone. NZ Jewellers lists it at $3,443. 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

0.50
Carat
E
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2557165660
Dimensions8.53 × 4.10 × 2.47 mm
L/W Ratio2.08
Top View
8.53 mm4.10 mm0.50 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2557165660
Side View
Table 58.0%CrownGirdle: UND-UNDPavilionCulet: NoneDepth 60.1%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $833 AUD|Low: $833 AUD|High: $2,031 AUD|Avg: $1,264 AUD|-2.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 1$833 AUD
Retailer 7$1,013 AUD
Retailer 6$1,120 AUD
Retailer 3$1,124 AUD
Retailer 8$1,140 AUD
Retailer 2$1,310 AUD
Retailer 4$1,548 AUD
Retailer 5$2,010 AUD

37 data points across 8 retailers

13 retailers$833 AUD to $3,443 AUD

A
Cheapest Retailer
-
$833 AUD
A
Retailer 2
-
$1,013 AUD
View
Final sale: no returns
A
Retailer 3
-
$1,099 AUD
View
A
Retailer 4
-
$1,120 AUD
View
A
Retailer 5
-
$1,124 AUD
View
A
Retailer 6
-
$1,136 AUD
View
A
Retailer 7
-
$1,140 AUD
View
B+
Retailer 8
-
$1,244 AUD
View
B+
Retailer 9
-
$1,267 AUD
View
B+
Retailer 10
-
$1,310 AUD
View
B+
Retailer 11
-
$1,548 AUD
View
B
Retailer 12
-
$2,010 AUD
View
Most Expensive
B
NZ Jewellers
0d6eefda-45c2-4910-8efa-370fbd0c370c · Nov 5
$3,443 AUD
$2,410 USD
View
12 more retailers have this diamond
Prices start from $833 AUDSave up to $2,610 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
0.50ct Marquise
$833 AUD