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Marquise|Natural|GIA

0.50ct E SI2 Marquise Natural Diamond

EX • E/SI2 • GIA 6551565624

Certificate GIA 6551565624

Diamond specifications and retailer prices

From $1,093 AUD
$768 USD
As of October 30, 2026
Save $1,403 AUD (56%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $4,254 AUD at NZ Jewellers · As of October 30, 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 SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6551565624. Listed at 17 retailers as of October 29, 2026, with a 128% 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
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle38°
Pavilion angle35°
OriginNatural
Grading LabGIA
CertificateGIA 6551565624
Dimensions7.81 × 4.11 × 2.64 mm
L/W Ratio1.90
Culet sizeNone
Key to symbols
Crystal
Top View
7.81 mm4.11 mm0.50 ctE / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6551565624
Side View
Table 55.0%Crown 38°Girdle: STK-VTKPavilion 35°Culet: NoneDepth 64.1%

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: Oct 30
Current: $1,588 AUD|Low: $1,093 AUD|High: $2,515 AUD|Avg: $1,489 AUD|+3.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 30, 2026
Retailer 13$1,093 AUD
Retailer 12$1,239 AUD
Retailer 7$1,246 AUD
Retailer 8$1,250 AUD
Retailer 9$1,357 AUD
Retailer 10$1,370 AUD
Retailer 2$1,385 AUD
Retailer 5$1,399 AUD
Retailer 3$1,500 AUD
Retailer 11$1,546 AUD
Retailer 1$1,588 AUD
Retailer 4$2,113 AUD
Retailer 6$2,497 AUD

40 data points across 13 retailers

17 retailers$1,093 AUD to $2,497 AUD

A
Cheapest Retailer
-
$1,093 AUD
$768 USD
B+
Retailer 2
-
$1,239 AUD
$870 USD
View
B+
Retailer 3
-
$1,246 AUD
SGD 1,183 SGD
View
B+
Retailer 4
-
$1,250 AUD
$878 USD
View
Final sale: no returns
Retailer 5
-
$1,357 AUD
$953 USD
View
Price last confirmed 32 days ago
B+
Retailer 6
-
$1,357 AUD
$953 USD
View
B+
Retailer 7
-
$1,357 AUD
$953 USD
View
B+
Retailer 8
-
$1,370 AUD
$962 USD
View
B+
Retailer 9
-
$1,408 AUD
$989 USD
View
B+
Retailer 10
-
$1,546 AUD
$1,086 USD
View
Retailer 11
-
$1,565 AUD
$1,099 USD
View
Price last confirmed 32 days ago
B+
Retailer 12
-
$1,565 AUD
$1,099 USD
View
B+
Retailer 13
-
$1,588 AUD
£878 GBP
View
Retailer 14
-
$1,599 AUD
$1,123 USD
View
Price last confirmed 54 days ago
B
Retailer 15
-
$2,497 AUD
£1,381 GBP
View
Retailer 16
-
$4,254 AUD
$2,988 USD
View
Price under review
Most Expensive
NZ Jewellers
cf76177b-5519-4e93-bc6a-6d6d0e1547cf · Oct 30
$4,254 AUD
$2,988 USD
View
Price under review
16 more retailers have this diamond
Prices start from $1,093 AUDSave up to $1,403 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
$1,093 AUD