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Marquise|Natural|GIA

0.50ct E SI1 Marquise Natural Diamond

EX • E/SI1 • GIA 2556995298

Certificate GIA 2556995298

Diamond specifications and retailer prices

From $859 AUD
As of November 6, 2026
Save $1,246 AUD (59%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $3,604 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 2556995298. Listed at 20 retailers as of November 2, 2026, with a 145% 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
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2556995298
Dimensions7.67 × 4.30 × 2.55 mm
L/W Ratio1.78
Key to symbols
Twinning Wisp, Feather
Top View
7.67 mm4.30 mm0.50 ctE / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 2556995298
Side View
Table 59.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 59.3%

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: $3,604 AUD|Low: $840 AUD|High: $3,604 AUD|Avg: $1,447 AUD|+3.7%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
November 6, 2026
Retailer 18$859 AUD
Retailer 11$1,026 AUD
Retailer 6$1,060 AUD
Retailer 4$1,143 AUD
Retailer 3$1,149 AUD
Retailer 13$1,149 AUD
Retailer 8$1,166 AUD
Retailer 10$1,191 AUD
Retailer 15$1,193 AUD
Retailer 7$1,293 AUD
Retailer 19$1,326 AUD
Retailer 9$1,339 AUD
Retailer 12$1,369 AUD
Retailer 5$1,393 AUD
Retailer 2$1,403 AUD
Retailer 16$1,617 AUD
Retailer 14$1,773 AUD
Retailer 17$2,104 AUD
NZ Jewellers$3,604 AUD

28 data points across 19 retailers

20 retailers$859 AUD to $2,104 AUD

A
Cheapest Retailer
-
$859 AUD
Retailer 2
-
$1,026 AUD
View
Price last confirmed 19 days ago
A
Retailer 3
-
$1,060 AUD
View
Final sale: no returns
Retailer 4
-
$1,143 AUD
View
Price last confirmed 9 days ago
Retailer 5
-
$1,149 AUD
View
Price last confirmed 8 days ago
A
Retailer 6
-
$1,149 AUD
View
B+
Retailer 7
-
$1,166 AUD
View
Retailer 8
-
$1,191 AUD
View
Price last confirmed 10 days ago
B+
Retailer 9
-
$1,193 AUD
View
B+
Retailer 10
-
$1,293 AUD
View
B+
Retailer 11
-
$1,326 AUD
View
B+
Retailer 12
-
$1,339 AUD
View
B+
Retailer 13
-
$1,369 AUD
View
B+
Retailer 14
-
$1,393 AUD
View
B+
Retailer 15
-
$1,403 AUD
View
B+
Retailer 16
-
$1,617 AUD
View
B
Retailer 17
-
$1,773 AUD
View
Retailer 18
-
$1,788 AUD
View
Price last confirmed 32 days ago
B
Retailer 19
-
$2,104 AUD
View
Most Expensive
NZ Jewellers
5a7da615-2684-40e1-8c15-03793f6e4886 · Nov 5
$3,604 AUD
$2,523 USD
View
Price under review
19 more retailers have this diamond
Prices start from $859 AUDSave up to $1,246 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
$859 AUD