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Marquise|Natural|GIA

0.50ct H SI1 Marquise Natural Diamond

EX • H/SI1 • GIA 2554995250

Certificate GIA 2554995250

Diamond specifications and retailer prices

From $856 AUD
As of October 30, 2026
18 retailers carry this diamond
Most expensive: $3,168 AUD at NZ Jewellers · As of October 27, 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 SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2554995250. Listed at 18 retailers as of October 27, 2026. 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
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryGood
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2554995250
Dimensions8.03 × 4.05 × 2.62 mm
L/W Ratio1.98
Key to symbols
Feather, Crystal
Top View
8.03 mm4.05 mm0.50 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryGood
FluorescenceFaint
CertificateGIA 2554995250
Side View
Table 57.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 64.6%

Caratlytics Score

No score right now
No retailer has confirmed this stone recently, so we are not scoring it. Prices below are as of the date shown.

Price History

Last verified: Oct 30
Current: $3,168 AUD|Low: $819 AUD|High: $3,168 AUD|Avg: $1,332 AUD|+3.6%
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
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
October 30, 2026
Retailer 3$856 AUD
Retailer 6$931 AUD
Retailer 17$1,010 AUD
Retailer 19$1,010 AUD
Retailer 7$1,019 AUD
Retailer 10$1,049 AUD
Retailer 18$1,049 AUD
Retailer 5$1,166 AUD
Retailer 16$1,166 AUD
Retailer 8$1,180 AUD
Retailer 9$1,202 AUD
Retailer 12$1,243 AUD
Retailer 13$1,246 AUD
Retailer 4$1,273 AUD
Retailer 15$1,434 AUD
Retailer 2$1,559 AUD
Retailer 11$1,572 AUD
Retailer 14$2,345 AUD
NZ Jewellers$3,168 AUD

26 data points across 19 retailers

18 retailers$856 AUD to $3,168 AUD

Retailer 1
-
$856 AUD
Price last confirmed 8 days ago
Retailer 2
-
$1,010 AUD
View
Price last confirmed 9 days ago
Retailer 3
-
$1,010 AUD
View
Price last confirmed 9 days ago
Retailer 4
-
$1,019 AUD
View
Price last confirmed 10 days ago
Retailer 5
-
$1,049 AUD
View
Price last confirmed 9 days ago
Retailer 6
-
$1,049 AUD
View
Price last confirmed 11 days ago
Retailer 7
-
$1,166 AUD
View
Price last confirmed 11 days ago
Retailer 8
-
$1,166 AUD
View
Price last confirmed 20 days ago
Retailer 9
-
$1,180 AUD
View
Price last confirmed 8 days ago
Retailer 10
-
$1,202 AUD
View
Price last confirmed 8 days ago
Retailer 11
-
$1,243 AUD
View
Price last confirmed 8 days ago
Retailer 12
-
$1,246 AUD
View
Price last confirmed 8 days ago
Retailer 13
-
$1,273 AUD
View
Price last confirmed 7 days ago
Retailer 14
-
$1,434 AUD
View
Price last confirmed 10 days ago
Retailer 15
-
$1,559 AUD
View
Price last confirmed 8 days ago
Retailer 16
-
$1,572 AUD
View
Price last confirmed 33 days ago
Retailer 17
-
$2,345 AUD
View
Price last confirmed 9 days ago
Most Expensive
NZ Jewellers
68b04a57-1884-4203-9656-3c71befe0aef · Oct 27
$3,168 AUD
$2,177 USD
View
Price under review
17 more retailers have this diamond

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.

0.50ct Marquise
$856 AUD