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Marquise|Natural|GIA

0.50ct I SI1 Marquise Natural Diamond

GD • I/SI1 • GIA 1549682009

Certificate GIA 1549682009

Diamond specifications and retailer prices

From $651 AUD
As of November 6, 2026
Save $1,994 AUD (75%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $2,644 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 1549682009. Listed at 20 retailers as of November 5, 2026, with prices from $651 to $2,644, a $1,994 spread on the same certified stone. NZ Jewellers lists it at $2,644. 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
SymmetryGood
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1549682009
Dimensions7.82 × 4.20 × 2.67 mm
L/W Ratio1.86
Girdle conditionFaceted
Key to symbols
Feather, Twinning Wisp
Top View
7.82 mm4.20 mm0.50 ctI / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryGood
FluorescenceFaint
CertificateGIA 1549682009
Side View
Table 58.0%CrownGirdle: MED-VTKPavilionCulet: NDepth 63.7%

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 6
Current: $2,644 AUD|Low: $651 AUD|High: $2,644 AUD|Avg: $1,116 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
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
November 6, 2026
Retailer 2$651 AUD
Retailer 10$707 AUD
Retailer 7$777 AUD
Retailer 11$805 AUD
Retailer 19$843 AUD
Retailer 13$878 AUD
Retailer 3$908 AUD
Retailer 9$908 AUD
Retailer 18$972 AUD
Retailer 14$1,023 AUD
Retailer 12$1,029 AUD
Retailer 5$1,033 AUD
Retailer 6$1,048 AUD
Retailer 4$1,128 AUD
Retailer 8$1,199 AUD
Retailer 16$1,243 AUD
Retailer 17$1,301 AUD
Retailer 15$1,944 AUD
NZ Jewellers$2,644 AUD

25 data points across 19 retailers

20 retailers$651 AUD to $2,644 AUD

A
Cheapest Retailer
-
$651 AUD
B+
Retailer 2
-
$707 AUD
View
B+
Retailer 3
-
$777 AUD
View
Final sale: no returns
B+
Retailer 4
-
$805 AUD
View
B+
Retailer 5
-
$843 AUD
View
B+
Retailer 6
-
$878 AUD
View
B+
Retailer 7
-
$908 AUD
View
Retailer 8
-
$908 AUD
View
Price last confirmed 9 days ago
B+
Retailer 9
-
$972 AUD
View
B+
Retailer 10
-
$1,023 AUD
View
B+
Retailer 11
-
$1,029 AUD
View
B
Retailer 12
-
$1,033 AUD
View
B
Retailer 13
-
$1,048 AUD
View
B
Retailer 14
-
$1,128 AUD
View
B
Retailer 15
-
$1,199 AUD
View
B
Retailer 16
-
$1,243 AUD
View
Retailer 17
-
$1,289 AUD
View
Price last confirmed 34 days ago
B
Retailer 18
-
$1,301 AUD
View
C
Retailer 19
-
$1,944 AUD
View
Most Expensive
C
NZ Jewellers
05c9ab7c-8dce-4b8e-9624-ce5d7109f7a1 · Nov 5
$2,644 AUD
$1,817 USD
View
19 more retailers have this diamond
Prices start from $651 AUDSave up to $1,994 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
$651 AUD