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Marquise|Natural|GIA

0.50ct E SI1 Marquise Natural Diamond

GD • E/SI1 • GIA 2554049460

Certificate GIA 2554049460

Diamond specifications and retailer prices

From $1,239 AUD
As of November 4, 2026
Save $1,463 AUD (54%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: $3,603 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 standard cut grade stated by the retailer rather than the lab and certified by GIA 2554049460. Listed at 24 retailers as of November 4, 2026, with a 118% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

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

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2554049460
Dimensions8.08 × 4.20 × 2.54 mm
L/W Ratio1.92
Top View
8.08 mm4.20 mm0.50 ctE / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 2554049460
Side View
Table 61.0%CrownGirdle: STK-ETKPavilionCulet: NoneDepth 60.6%

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 4
Current: $3,603 AUD|Low: $1,236 AUD|High: $3,603 AUD|Avg: $1,885 AUD
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
November 6, 2026
Retailer 12$1,236 AUD
Retailer 15$1,314 AUD
Retailer 5$1,337 AUD
Retailer 6$1,339 AUD
Retailer 13$1,353 AUD
Retailer 3$1,390 AUD
Retailer 4$1,518 AUD
Retailer 14$1,557 AUD
Retailer 8$1,663 AUD
Retailer 9$1,704 AUD
Retailer 2$1,906 AUD
Retailer 16$1,931 AUD
Retailer 10$2,280 AUD
Retailer 7$2,393 AUD
Retailer 11$2,701 AUD
NZ Jewellers$3,603 AUD

45 data points across 16 retailers

24 retailers$1,239 AUD to $2,701 AUD

Retailer 1
-
$1,236 AUD
Price last confirmed 9 days ago
B+
Retailer 2
-
$1,239 AUD
View
B+
Retailer 3
-
$1,314 AUD
View
B+
Retailer 4
-
$1,323 AUD
View
B+
Retailer 5
-
$1,331 AUD
View
B+
Retailer 6
-
$1,337 AUD
View
Retailer 7
-
$1,339 AUD
View
Price last confirmed 8 days ago
B+
Retailer 8
-
$1,339 AUD
View
B+
Retailer 9
-
$1,353 AUD
View
B
Retailer 10
-
$1,390 AUD
View
B
Retailer 11
-
$1,518 AUD
View
B
Retailer 12
-
$1,544 AUD
View
B
Retailer 13
-
$1,557 AUD
View
B
Retailer 14
-
$1,628 AUD
View
B
Retailer 15
-
$1,628 AUD
View
B
Retailer 16
-
$1,663 AUD
View
B
Retailer 17
-
$1,686 AUD
View
B
Retailer 18
-
$1,704 AUD
View
B
Retailer 19
-
$1,906 AUD
View
Retailer 20
-
$1,931 AUD
View
Price last confirmed 33 days ago
B
Retailer 21
-
$2,280 AUD
View
C
Retailer 22
-
$2,393 AUD
View
B
Retailer 23
-
$2,701 AUD
View
Most Expensive
NZ Jewellers
b7e4e357-83ab-45b9-9099-d6809702460b · Nov 5
$3,603 AUD
$2,522 USD
View
Price under review
23 more retailers have this diamond
Prices start from $1,239 AUDSave up to $1,463 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+
0.50ct Marquise
$1,239 AUD