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Marquise|Natural|GIA

0.50ct H SI2 Marquise Natural Diamond

EX • H/SI2 • GIA 6545535409

Certificate GIA 6545535409

Diamond specifications and retailer prices

From $731 AUD
HK$4,000 HKD
As of November 1, 2026
Save $1,283 AUD (64%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $2,734 AUD at NZ Jewellers · As of October 30, 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 H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6545535409. Listed at 14 retailers as of November 1, 2026, with a 176% 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
H
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 6545535409
Dimensions8.48 × 4.04 × 2.45 mm
L/W Ratio2.10
Top View
8.48 mm4.04 mm0.50 ctH / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceMedium
CertificateGIA 6545535409
Side View
Table 58.0%CrownGirdle: Very ThickPavilionCulet: NDepth 60.6%

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 1
Current: $2,734 AUD|Low: $803 AUD|High: $2,734 AUD|Avg: $1,199 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
November 2, 2026
Retailer 3$803 AUD
Retailer 12$872 AUD
Retailer 10$939 AUD
Retailer 11$939 AUD
Retailer 8$1,006 AUD
Retailer 2$1,041 AUD
Retailer 4$1,056 AUD
Retailer 6$1,072 AUD
Retailer 9$1,092 AUD
Retailer 5$1,285 AUD
Retailer 7$2,013 AUD
NZ Jewellers$2,734 AUD

33 data points across 12 retailers

14 retailers$731 AUD to $2,013 AUD

A
Cheapest Retailer
-
$731 AUD
HK$4,000 HKD
A
Retailer 2
-
$803 AUD
$563 USD
View
Final sale: no returns
B+
Retailer 3
-
$872 AUD
$611 USD
View
B+
Retailer 4
-
$939 AUD
$658 USD
View
B+
Retailer 5
-
$939 AUD
$658 USD
View
B+
Retailer 6
-
$1,006 AUD
$705 USD
View
B+
Retailer 7
-
$1,006 AUD
$705 USD
View
B+
Retailer 8
-
$1,041 AUD
£575 GBP
View
B+
Retailer 9
-
$1,056 AUD
$740 USD
View
B+
Retailer 10
-
$1,072 AUD
£591 GBP
View
B+
Retailer 11
-
$1,092 AUD
£603 GBP
View
B
Retailer 12
-
$1,285 AUD
€858 EUR
View
B
Retailer 13
-
$2,013 AUD
£1,111 GBP
View
Most Expensive
NZ Jewellers
3393a178-b7b2-47be-8ba7-0a0ae1ddd652 · Oct 30
$2,734 AUD
$1,916 USD
View
Price under review
13 more retailers have this diamond
Prices start from $731 AUDSave up to $1,283 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
$731 AUD