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Marquise|Natural|GIA

0.50ct E SI1 Marquise Natural Diamond

VG • E/SI1 • GIA 6531995714

Certificate GIA 6531995714

Diamond specifications and retailer prices

From $1,458 AUD
As of November 4, 2026
Save $1,727 AUD (54%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $4,254 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 6531995714. Listed at 22 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
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishVery Good
SymmetryVery Good
FluorescenceFaint
Pavilion angle37.5°
OriginNatural
Grading LabGIA
CertificateGIA 6531995714
Dimensions8.55 × 4.25 × 2.46 mm
L/W Ratio2.01
Top View
8.55 mm4.25 mm0.50 ctE / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6531995714
Side View
Table 55.0%CrownGirdle: MED-THKPavilion 37.5°Culet: NoneDepth 57.8%

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: $4,254 AUD|Low: $1,216 AUD|High: $4,254 AUD|Avg: $2,309 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 7$1,458 AUD
Retailer 10$1,580 AUD
Retailer 9$1,640 AUD
Retailer 6$1,771 AUD
Retailer 3$1,970 AUD
Retailer 2$2,251 AUD
Retailer 8$2,280 AUD
Retailer 4$2,691 AUD
Retailer 5$3,186 AUD
NZ Jewellers$4,254 AUD

45 data points across 10 retailers

22 retailers$1,458 AUD to $3,186 AUD

B+
Cheapest Retailer
-
$1,458 AUD
Final sale: no returns
B
Retailer 2
-
$1,513 AUD
View
B+
Retailer 3
-
$1,537 AUD
View
B+
Retailer 4
-
$1,547 AUD
View
B+
Retailer 5
-
$1,580 AUD
View
Retailer 6
-
$1,580 AUD
View
Price last confirmed 8 days ago
B
Retailer 7
-
$1,640 AUD
View
B
Retailer 8
-
$1,768 AUD
View
B
Retailer 9
-
$1,771 AUD
View
B
Retailer 10
-
$1,823 AUD
View
B
Retailer 11
-
$1,900 AUD
View
B
Retailer 12
-
$1,900 AUD
View
B
Retailer 13
-
$1,970 AUD
View
B
Retailer 14
-
$1,971 AUD
View
B
Retailer 15
-
$1,971 AUD
View
B
Retailer 16
-
$2,228 AUD
View
B
Retailer 17
-
$2,251 AUD
View
Retailer 18
-
$2,280 AUD
View
Price last confirmed 33 days ago
B
Retailer 19
-
$2,691 AUD
View
B
Retailer 20
-
$2,837 AUD
View
B
Retailer 21
-
$3,186 AUD
View
Most Expensive
NZ Jewellers
44786f66-b0e9-4c52-b44f-4deec32d260f · Nov 5
$4,254 AUD
$2,978 USD
View
Price under review
21 more retailers have this diamond
Prices start from $1,458 AUDSave up to $1,727 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
$1,458 AUD