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Marquise|Natural|GIA

0.50ct D SI1 Marquise Natural Diamond

ID • D/SI1 • GIA 7558321060

Certificate GIA 7558321060

Diamond specifications and retailer prices

From $704 AUD
As of November 6, 2026
Save $1,601 AUD (69%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $3,788 AUD at NZ Jewellers · As of September 28, 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 D 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 7558321060. Listed at 12 retailers as of November 2, 2026, with a 227% 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
D
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 7558321060
Dimensions7.41 × 4.13 × 2.66 mm
L/W Ratio1.79
Girdle conditionThick
Top View
7.41 mm4.13 mm0.50 ctD / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 7558321060
Side View
Table 59.0%CrownGirdle: Slightly ThickPavilionCulet: NoneDepth 64.3%

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: $742 AUD|Low: $704 AUD|High: $2,336 AUD|Avg: $1,336 AUD|-17.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 10$704 AUD
Retailer 1$742 AUD
Retailer 7$1,019 AUD
Retailer 8$1,172 AUD
Retailer 9$1,191 AUD
Retailer 3$1,221 AUD
Retailer 5$1,415 AUD
Retailer 4$1,541 AUD
Retailer 2$1,783 AUD
Retailer 6$2,305 AUD

34 data points across 10 retailers

12 retailers$704 AUD to $2,305 AUD

A
Cheapest Retailer
-
$704 AUD
Final sale: no returns
A
Retailer 2
-
$742 AUD
View
A
Retailer 3
-
$958 AUD
View
A
Retailer 4
-
$1,019 AUD
View
A
Retailer 5
-
$1,172 AUD
View
A
Retailer 6
-
$1,191 AUD
View
A
Retailer 7
-
$1,221 AUD
View
B+
Retailer 8
-
$1,415 AUD
View
B+
Retailer 9
-
$1,541 AUD
View
Retailer 10
-
$1,783 AUD
View
Price last confirmed 34 days ago
B
Retailer 11
-
$2,305 AUD
View
Most Expensive
NZ Jewellers
98e92365-5df4-46d8-8641-e042bdd38b52 · Sep 28
$3,788 AUD
$2,603 USD
View
Price under review
11 more retailers have this diamond
Prices start from $704 AUDSave up to $1,601 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
$704 AUD