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Marquise|Natural|GIA

0.50ct E SI1 Marquise Natural Diamond

EX • E/SI1 • GIA 2546306199

Certificate GIA 2546306199

Diamond specifications and retailer prices

From $1,101 AUD
As of November 4, 2026
Save $1,487 AUD (57%) vs most expensive(unlock to see where)
27 retailers carry this diamond
Most expensive: $4,440 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 E 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 2546306199. Listed at 27 retailers as of November 4, 2026, with a 135% 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
E
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Pavilion angle40.5°
OriginNatural
Grading LabGIA
CertificateGIA 2546306199
Dimensions7.92 × 4.07 × 2.59 mm
L/W Ratio1.95
Top View
7.92 mm4.07 mm0.50 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2546306199
Side View
Table 59.0%CrownGirdle: MED-VTKPavilion 40.5°Culet: NoneDepth 63.6%

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 4
Current: $4,440 AUD|Low: $1,101 AUD|High: $4,440 AUD|Avg: $1,908 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
November 6, 2026
Retailer 11$1,101 AUD
Retailer 7$1,236 AUD
Retailer 3$1,279 AUD
Retailer 4$1,283 AUD
Retailer 13$1,331 AUD
Retailer 5$1,480 AUD
Retailer 10$1,507 AUD
Retailer 6$1,643 AUD
Retailer 2$1,980 AUD
Retailer 12$2,128 AUD
Retailer 8$2,184 AUD
Retailer 9$2,588 AUD
NZ Jewellers$4,440 AUD

45 data points across 13 retailers

27 retailers$1,101 AUD to $2,588 AUD

A
Cheapest Retailer
-
$1,101 AUD
Final sale: no returns
B+
Retailer 2
-
$1,186 AUD
View
B+
Retailer 3
-
$1,236 AUD
View
B+
Retailer 4
-
$1,259 AUD
View
B+
Retailer 5
-
$1,271 AUD
View
B+
Retailer 6
-
$1,279 AUD
View
B+
Retailer 7
-
$1,283 AUD
View
Retailer 8
-
$1,283 AUD
View
Price last confirmed 8 days ago
B+
Retailer 9
-
$1,283 AUD
View
B+
Retailer 10
-
$1,297 AUD
View
B+
Retailer 11
-
$1,331 AUD
View
B+
Retailer 12
-
$1,426 AUD
View
B+
Retailer 13
-
$1,480 AUD
View
B
Retailer 14
-
$1,507 AUD
View
B+
Retailer 15
-
$1,571 AUD
View
B+
Retailer 16
-
$1,571 AUD
View
B+
Retailer 17
-
$1,591 AUD
View
B+
Retailer 18
-
$1,614 AUD
View
B+
Retailer 19
-
$1,643 AUD
View
B
Retailer 20
-
$1,746 AUD
View
B
Retailer 21
-
$1,874 AUD
View
B
Retailer 22
-
$1,980 AUD
View
Retailer 23
-
$2,128 AUD
View
Price last confirmed 32 days ago
B
Retailer 24
-
$2,184 AUD
View
B
Retailer 25
-
$2,290 AUD
View
B
Retailer 26
-
$2,588 AUD
View
Most Expensive
NZ Jewellers
28f8e5c3-ca23-4b8a-a260-8f98ca41cfbc · Nov 5
$4,440 AUD
$3,108 USD
View
Price under review
26 more retailers have this diamond
Prices start from $1,101 AUDSave up to $1,487 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
$1,101 AUD