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Marquise|Natural|GIA

0.50ct D SI1 Marquise Natural Diamond

EX • D/SI1 • GIA 2546398602

Certificate GIA 2546398602

Diamond specifications and retailer prices

From $1,115 AUD
As of November 5, 2026
Save $1,658 AUD (60%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $3,698 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 D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2546398602. Listed at 23 retailers as of November 4, 2026, with a 149% 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
D
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryGood
FluorescenceNone
Pavilion angle41.1°
OriginNatural
Grading LabGIA
CertificateGIA 2546398602
Dimensions8.16 × 4.24 × 2.58 mm
L/W Ratio1.92
Top View
8.16 mm4.24 mm0.50 ctD / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateGIA 2546398602
Side View
Table 62.0%CrownGirdle: MED-THKPavilion 41.1°Culet: NoneDepth 60.7%

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 5
Current: $3,698 AUD|Low: $1,057 AUD|High: $3,698 AUD|Avg: $1,960 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
November 6, 2026
Retailer 7$1,115 AUD
Retailer 11$1,268 AUD
Retailer 4$1,374 AUD
Retailer 3$1,426 AUD
Retailer 10$1,594 AUD
Retailer 6$1,749 AUD
Retailer 2$1,950 AUD
Retailer 5$1,956 AUD
Retailer 12$1,982 AUD
Retailer 8$2,339 AUD
Retailer 9$2,773 AUD
NZ Jewellers$3,698 AUD

44 data points across 12 retailers

23 retailers$1,115 AUD to $2,773 AUD

A
Cheapest Retailer
-
$1,115 AUD
B+
Retailer 2
-
$1,268 AUD
View
Final sale: no returns
B+
Retailer 3
-
$1,358 AUD
View
B+
Retailer 4
-
$1,359 AUD
View
B+
Retailer 5
-
$1,365 AUD
View
Retailer 6
-
$1,374 AUD
View
Price last confirmed 9 days ago
B+
Retailer 7
-
$1,374 AUD
View
B+
Retailer 8
-
$1,387 AUD
View
B+
Retailer 9
-
$1,426 AUD
View
B
Retailer 10
-
$1,585 AUD
View
B
Retailer 11
-
$1,594 AUD
View
B
Retailer 12
-
$1,674 AUD
View
B
Retailer 13
-
$1,674 AUD
View
B
Retailer 14
-
$1,706 AUD
View
B
Retailer 15
-
$1,732 AUD
View
B
Retailer 16
-
$1,749 AUD
View
B
Retailer 17
-
$1,950 AUD
View
B
Retailer 18
-
$1,956 AUD
View
Retailer 19
-
$1,982 AUD
View
Price last confirmed 34 days ago
B
Retailer 20
-
$2,339 AUD
View
B
Retailer 21
-
$2,457 AUD
View
B
Retailer 22
-
$2,773 AUD
View
Most Expensive
NZ Jewellers
d6e4a16b-be2e-46e6-b827-23a2faa1cf14 · Nov 5
$3,698 AUD
$2,541 USD
View
Price under review
22 more retailers have this diamond
Prices start from $1,115 AUDSave up to $1,658 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
$1,115 AUD