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Marquise|Natural|GIA

0.50ct I SI1 Marquise Natural Diamond

GD • I/SI1 • GIA 2536185026

Certificate GIA 2536185026

Diamond specifications and retailer prices

From $936 AUD
As of November 5, 2026
Save $1,221 AUD (57%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $2,934 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 2536185026. Listed at 16 retailers as of November 4, 2026, with a 130% 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
I
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2536185026
Dimensions8.75 × 4.01 × 2.50 mm
L/W Ratio2.18
Top View
8.75 mm4.01 mm0.50 ctI / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 2536185026
Side View
Table 55.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 62.4%

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 5
Current: $1,141 AUD|Low: $946 AUD|High: $2,186 AUD|Avg: $1,327 AUD|-1.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 7$946 AUD
Retailer 2$972 AUD
Retailer 9$1,007 AUD
Retailer 3$1,140 AUD
Retailer 1$1,141 AUD
Retailer 6$1,208 AUD
Retailer 5$1,368 AUD
Retailer 8$1,406 AUD
Retailer 4$2,157 AUD

39 data points across 9 retailers

16 retailers$936 AUD to $2,157 AUD

B+
Cheapest Retailer
-
$936 AUD
B+
Retailer 2
-
$946 AUD
View
B+
Retailer 3
-
$972 AUD
View
Retailer 4
-
$1,007 AUD
View
Price last confirmed 8 days ago
B+
Retailer 5
-
$1,007 AUD
View
Retailer 6
-
$1,080 AUD
View
Price last confirmed 60 days ago
B
Retailer 7
-
$1,080 AUD
View
B
Retailer 8
-
$1,105 AUD
View
B
Retailer 9
-
$1,126 AUD
View
B
Retailer 10
-
$1,140 AUD
View
B
Retailer 11
-
$1,141 AUD
View
B
Retailer 12
-
$1,208 AUD
View
B
Retailer 13
-
$1,368 AUD
View
Retailer 14
-
$1,406 AUD
View
Price last confirmed 32 days ago
B
Retailer 15
-
$2,157 AUD
View
Most Expensive
NZ Jewellers
17f14358-a33c-4d3b-91f6-048f1987f085 · Nov 5
$2,934 AUD
$2,016 USD
View
Price under review
15 more retailers have this diamond
Prices start from $936 AUDSave up to $1,221 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
$936 AUD