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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 $1,363 NZD
$768 USD
As of October 30, 2026
Save $1,749 NZD (56%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $5,302 NZD 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: $5,302 NZD|Low: $1,363 NZD|High: $5,302 NZD|Avg: $2,027 NZD
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
October 31, 2026
Retailer 5$1,363 NZD
Retailer 4$1,544 NZD
Retailer 10$1,553 NZD
Retailer 11$1,558 NZD
Retailer 13$1,691 NZD
Retailer 15$1,691 NZD
Retailer 16$1,707 NZD
Retailer 8$1,744 NZD
Retailer 12$1,755 NZD
Retailer 6$1,870 NZD
Retailer 3$1,927 NZD
Retailer 14$1,950 NZD
Retailer 2$1,979 NZD
Retailer 7$2,633 NZD
Retailer 9$3,112 NZD
NZ Jewellers$5,302 NZD

43 data points across 16 retailers

17 retailers$1,363 NZD to $3,112 NZD

A
Cheapest Retailer
-
$1,363 NZD
$768 USD
B+
Retailer 2
-
$1,544 NZD
$870 USD
View
B+
Retailer 3
-
$1,553 NZD
SGD 1,183 SGD
View
B+
Retailer 4
-
$1,558 NZD
$878 USD
View
Final sale: no returns
Retailer 5
-
$1,691 NZD
$953 USD
View
Price last confirmed 32 days ago
B+
Retailer 6
-
$1,691 NZD
$953 USD
View
B+
Retailer 7
-
$1,691 NZD
$953 USD
View
B+
Retailer 8
-
$1,707 NZD
$962 USD
View
B+
Retailer 9
-
$1,755 NZD
$989 USD
View
B+
Retailer 10
-
$1,927 NZD
$1,086 USD
View
Retailer 11
-
$1,950 NZD
$1,099 USD
View
Price last confirmed 32 days ago
B+
Retailer 12
-
$1,950 NZD
$1,099 USD
View
B+
Retailer 13
-
$1,979 NZD
£878 GBP
View
Retailer 14
-
$1,993 NZD
$1,123 USD
View
Price last confirmed 54 days ago
B
Retailer 15
-
$3,112 NZD
£1,381 GBP
View
Retailer 16
-
$5,302 NZD
$2,988 USD
View
Price under review
Most Expensive
NZ Jewellers
cf76177b-5519-4e93-bc6a-6d6d0e1547cf · Oct 30
$5,302 NZD
$2,988 USD
View
Price under review
16 more retailers have this diamond
Prices start from $1,363 NZDSave up to $1,749 NZD

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
$1,363 NZD