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Marquise|Natural|GIA

0.50ct E SI1 Marquise Natural Diamond

VG • E/SI1 • GIA 6552378837

Certificate GIA 6552378837

Diamond specifications and retailer prices

From $1,201 AUD
As of November 4, 2026
Save $1,424 AUD (54%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $4,504 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 very-good cut grade stated by the retailer rather than the lab and certified by GIA 6552378837. Listed at 22 retailers as of November 4, 2026, with a 119% 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
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishVery Good
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6552378837
Dimensions8.79 × 3.98 × 2.50 mm
L/W Ratio2.21
Girdle conditionFaceted
Culet sizeNone
Top View
8.79 mm3.98 mm0.50 ctE / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateGIA 6552378837
Side View
Table 59.0%CrownGirdle: THN-STKPavilionCulet: NoneDepth 62.8%

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: $4,504 AUD|Low: $1,001 AUD|High: $4,504 AUD|Avg: $1,914 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
November 6, 2026
Retailer 13$1,201 AUD
Retailer 11$1,207 AUD
Retailer 5$1,301 AUD
Retailer 4$1,307 AUD
Retailer 15$1,351 AUD
Retailer 3$1,466 AUD
Retailer 6$1,501 AUD
Retailer 12$1,528 AUD
Retailer 2$1,667 AUD
Retailer 14$1,877 AUD
Retailer 10$2,010 AUD
Retailer 8$2,216 AUD
Retailer 7$2,324 AUD
Retailer 9$2,626 AUD
NZ Jewellers$4,504 AUD

46 data points across 15 retailers

22 retailers$1,201 AUD to $2,626 AUD

Retailer 1
-
$840 AUD
Price last confirmed 63 days ago
B+
Retailer 2
-
$1,201 AUD
View
Final sale: no returns
B+
Retailer 3
-
$1,204 AUD
View
Retailer 4
-
$1,207 AUD
View
Price last confirmed 9 days ago
B+
Retailer 5
-
$1,289 AUD
View
B+
Retailer 6
-
$1,301 AUD
View
Retailer 7
-
$1,301 AUD
View
Price last confirmed 8 days ago
B+
Retailer 8
-
$1,307 AUD
View
B+
Retailer 9
-
$1,314 AUD
View
B+
Retailer 10
-
$1,351 AUD
View
B
Retailer 11
-
$1,466 AUD
View
B
Retailer 12
-
$1,501 AUD
View
B
Retailer 13
-
$1,528 AUD
View
B
Retailer 14
-
$1,614 AUD
View
B
Retailer 15
-
$1,667 AUD
View
Retailer 16
-
$1,877 AUD
View
Price last confirmed 33 days ago
B
Retailer 17
-
$1,896 AUD
View
B
Retailer 18
-
$2,010 AUD
View
B
Retailer 19
-
$2,216 AUD
View
B
Retailer 20
-
$2,324 AUD
View
B
Retailer 21
-
$2,626 AUD
View
Most Expensive
NZ Jewellers
7f37b805-ce11-4328-9561-62bd84e40bac · Nov 5
$4,504 AUD
$3,153 USD
View
Price under review
21 more retailers have this diamond
Prices start from $1,201 AUDSave up to $1,424 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
$1,201 AUD