CaratHunter
Plans
Marquise|Natural|GIA

0.50ct H SI2 Marquise Natural Diamond

EX • H/SI2 • GIA 1553255657

Certificate GIA 1553255657

Diamond specifications and retailer prices

From $917 AUD
$643 USD
As of November 2, 2026
Save $1,105 AUD (55%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $3,445 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 1553255657. Listed at 14 retailers as of October 29, 2026, with a 120% 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
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1553255657
Dimensions8.35 × 4.12 × 2.49 mm
L/W Ratio2.03
Key to symbols
Twinning Wisp
Top View
8.35 mm4.12 mm0.50 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1553255657
Side View
Table 60.0%CrownGirdle: MED-VTKPavilionCulet: NDepth 60.3%

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 2
Current: $3,445 AUD|Low: $765 AUD|High: $3,445 AUD|Avg: $1,550 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
November 2, 2026
Retailer 9$917 AUD
Retailer 8$976 AUD
Retailer 5$995 AUD
Retailer 11$995 AUD
Retailer 10$1,033 AUD
Retailer 4$1,149 AUD
Retailer 3$1,224 AUD
Retailer 6$1,309 AUD
Retailer 13$1,420 AUD
Retailer 2$1,423 AUD
Retailer 7$2,022 AUD
Retailer 12$3,171 AUD
NZ Jewellers$3,445 AUD

42 data points across 13 retailers

14 retailers$917 AUD to $2,022 AUD

A
Cheapest Retailer
-
$917 AUD
$643 USD
Final sale: no returns
B+
Retailer 2
-
$976 AUD
$684 USD
View
B+
Retailer 3
-
$995 AUD
$697 USD
View
B+
Retailer 4
-
$995 AUD
$697 USD
View
B+
Retailer 5
-
$1,016 AUD
$712 USD
View
B+
Retailer 6
-
$1,033 AUD
$724 USD
View
B+
Retailer 7
-
$1,149 AUD
$805 USD
View
B
Retailer 8
-
$1,224 AUD
$858 USD
View
B
Retailer 9
-
$1,309 AUD
£722 GBP
View
B
Retailer 10
-
$1,321 AUD
$926 USD
View
B
Retailer 11
-
$1,423 AUD
€950 EUR
View
B
Retailer 12
-
$2,022 AUD
£1,116 GBP
View
Retailer 13
-
$3,171 AUD
CA$3,087 CAD
View
Price under review
Most Expensive
NZ Jewellers
208f3f6d-ddf7-4dc5-bb3f-b01eab52b41a · Oct 30
$3,445 AUD
$2,414 USD
View
Price under review
13 more retailers have this diamond
Prices start from $917 AUDSave up to $1,105 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
$917 AUD