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Marquise|Natural|GIA

0.50ct I SI1 Marquise Natural Diamond

EX • I/SI1 • GIA 5566277388

Certificate GIA 5566277388

Diamond specifications and retailer prices

From $685 AUD
As of November 6, 2026
Save $1,886 AUD (73%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $2,572 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 top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5566277388. Listed at 18 retailers as of November 5, 2026, with prices from $685 to $2,572, a $1,886 spread on the same certified stone. NZ Jewellers lists it at $2,572. 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
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryGood
FluorescenceFaint
Crown angle42.3°
Pavilion angle34°
OriginNatural
Grading LabGIA
CertificateGIA 5566277388
Dimensions7.51 × 4.21 × 2.47 mm
L/W Ratio1.78
Girdle conditionFaceted
Culet sizeNone
Top View
7.51 mm4.21 mm0.50 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryGood
FluorescenceFaint
CertificateGIA 5566277388
Side View
Table 60.0%Crown 42.3°Girdle: THK-VTKPavilion 34°Culet: NoneDepth 58.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $2,572 AUD|Low: $587 AUD|High: $2,572 AUD|Avg: $996 AUD|+7.0%
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
November 6, 2026
Retailer 19$591 AUD
Retailer 11$669 AUD
Retailer 16$685 AUD
Retailer 9$706 AUD
Retailer 17$744 AUD
Retailer 15$808 AUD
Retailer 18$808 AUD
Retailer 6$822 AUD
Retailer 7$822 AUD
Retailer 10$828 AUD
Retailer 14$857 AUD
Retailer 8$950 AUD
Retailer 3$984 AUD
Retailer 13$988 AUD
Retailer 2$1,001 AUD
Retailer 12$1,100 AUD
Retailer 4$1,175 AUD
Retailer 5$1,764 AUD
NZ Jewellers$2,572 AUD

24 data points across 19 retailers

18 retailers$685 AUD to $2,572 AUD

Retailer 1
-
$591 AUD
Price last confirmed 12 days ago
Retailer 2
-
$669 AUD
View
Price last confirmed 11 days ago
A
Retailer 3
-
$685 AUD
View
Final sale: no returns
Retailer 4
-
$706 AUD
View
Price last confirmed 17 days ago
A
Retailer 5
-
$744 AUD
View
A
Retailer 6
-
$808 AUD
View
A
Retailer 7
-
$808 AUD
View
Retailer 8
-
$822 AUD
View
Price last confirmed 13 days ago
Retailer 9
-
$822 AUD
View
Price last confirmed 13 days ago
Retailer 10
-
$828 AUD
View
Price last confirmed 11 days ago
A
Retailer 11
-
$857 AUD
View
B+
Retailer 12
-
$988 AUD
View
B+
Retailer 13
-
$1,001 AUD
View
B+
Retailer 14
-
$1,100 AUD
View
Retailer 15
-
$1,175 AUD
View
Price last confirmed 12 days ago
Retailer 16
-
$1,221 AUD
View
Price last confirmed 34 days ago
Retailer 17
-
$1,764 AUD
View
Price last confirmed 13 days ago
Most Expensive
C
NZ Jewellers
5d455ea6-a4b4-4a43-970c-4a09e1015088 · Nov 5
$2,572 AUD
$1,767 USD
View
17 more retailers have this diamond
Prices start from $685 AUDSave up to $1,886 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
$685 AUD