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Marquise|Natural|GIA

0.50ct J SI1 Marquise Natural Diamond

EX • J/SI1 • GIA 6555438330

Certificate GIA 6555438330

Diamond specifications and retailer prices

From $646 NZD
As of November 4, 2026
Save $2,271 NZD (78%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $2,917 NZD 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 J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6555438330. Listed at 11 retailers as of November 4, 2026, with prices from $646 to $2,917, a $2,271 spread on the same certified stone. NZ Jewellers lists it at $2,917. 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
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6555438330
Dimensions8.44 × 4.16 × 2.41 mm
L/W Ratio2.03
Girdle conditionThick to Very Thick
Key to symbols
Feather, Crystal
Top View
8.44 mm4.16 mm0.50 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6555438330
Side View
Table 65.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 57.9%

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: $2,917 NZD|Low: $646 NZD|High: $2,971 NZD|Avg: $1,263 NZD|-1.8%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 7, 2026
Retailer 11$646 NZD
Retailer 5$684 NZD
Retailer 10$785 NZD
Retailer 8$931 NZD
Retailer 9$987 NZD
Retailer 3$998 NZD
Retailer 7$1,001 NZD
Retailer 6$1,135 NZD
Retailer 2$1,508 NZD
Retailer 4$2,136 NZD
NZ Jewellers$2,917 NZD

28 data points across 11 retailers

11 retailers$646 NZD to $2,917 NZD

A
Cheapest Retailer
-
$646 NZD
Final sale: no returns
A
Retailer 2
-
$684 NZD
View
A
Retailer 3
-
$785 NZD
View
A
Retailer 4
-
$931 NZD
View
A
Retailer 5
-
$987 NZD
View
Retailer 6
-
$998 NZD
View
Price last confirmed 13 days ago
A
Retailer 7
-
$1,001 NZD
View
B+
Retailer 8
-
$1,135 NZD
View
B+
Retailer 9
-
$1,508 NZD
View
B
Retailer 10
-
$2,136 NZD
View
Most Expensive
B
NZ Jewellers
62cd1bc3-5fc8-42e9-84af-cd8d77ad2090 · Nov 5
$2,917 NZD
$1,617 USD
View
10 more retailers have this diamond
Prices start from $646 NZDSave up to $2,271 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
$646 NZD