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Marquise|Natural|GIA

0.50ct E SI1 Marquise Natural Diamond

ID • E/SI1 • GIA 3545398580

Certificate GIA 3545398580

Diamond specifications and retailer prices

From $1,069 AUD
As of November 4, 2026
Save $1,448 AUD (58%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $4,311 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 3545398580. Listed at 23 retailers as of November 2, 2026, with a 136% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 3545398580
Dimensions8.10 × 4.15 × 2.57 mm
L/W Ratio1.95
Top View
8.10 mm4.15 mm0.50 ctE / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 3545398580
Side View
Table 58.0%CrownGirdle: VTN-THKPavilion 40.6°Culet: NoneDepth 62.0%

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 4
Current: $4,311 AUD|Low: $1,069 AUD|High: $4,311 AUD|Avg: $1,936 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 9$1,069 AUD
Retailer 5$1,197 AUD
Retailer 3$1,246 AUD
Retailer 11$1,293 AUD
Retailer 8$1,478 AUD
Retailer 4$1,593 AUD
Retailer 2$1,924 AUD
Retailer 10$2,067 AUD
Retailer 6$2,121 AUD
Retailer 7$2,517 AUD
NZ Jewellers$4,311 AUD

45 data points across 11 retailers

23 retailers$1,069 AUD to $2,517 AUD

A
Cheapest Retailer
-
$1,069 AUD
Final sale: no returns
A
Retailer 2
-
$1,150 AUD
View
A
Retailer 3
-
$1,197 AUD
View
B+
Retailer 4
-
$1,223 AUD
View
B+
Retailer 5
-
$1,236 AUD
View
B+
Retailer 6
-
$1,246 AUD
View
Retailer 7
-
$1,246 AUD
View
Price last confirmed 8 days ago
B+
Retailer 8
-
$1,249 AUD
View
B+
Retailer 9
-
$1,260 AUD
View
B+
Retailer 10
-
$1,293 AUD
View
B+
Retailer 11
-
$1,390 AUD
View
B+
Retailer 12
-
$1,437 AUD
View
B
Retailer 13
-
$1,478 AUD
View
B+
Retailer 14
-
$1,544 AUD
View
B+
Retailer 15
-
$1,593 AUD
View
B
Retailer 16
-
$1,694 AUD
View
B
Retailer 17
-
$1,830 AUD
View
B
Retailer 18
-
$1,924 AUD
View
Retailer 19
-
$2,067 AUD
View
Price last confirmed 33 days ago
B
Retailer 20
-
$2,121 AUD
View
B
Retailer 21
-
$2,223 AUD
View
B
Retailer 22
-
$2,517 AUD
View
Most Expensive
NZ Jewellers
ecb8af5a-ce34-49cf-9bbe-67104c100532 · Nov 5
$4,311 AUD
$3,018 USD
View
Price under review
22 more retailers have this diamond
Prices start from $1,069 AUDSave up to $1,448 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
$1,069 AUD