Rock Identifier
Zinc Alloy (Silver-plated) (Zinc Alloy Casting (Zn-Al-Mg-Cu)) — mineral (refined metal)
mineral (refined metal)

Zinc Alloy (Silver-plated)

Zinc Alloy Casting (Zn-Al-Mg-Cu)

Hardness: 3.5-4.0 (Mohs); Color: Bright silver (plated); Luster: Metallic; Crystal Structure: Polycrystalline (die-cast); Specific Gravity: ~6.6

Hardness
3
Color
Bright silver (plated)
Luster
Metallic
Identified More mineral (refined metal) →

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Physical properties

Hardness: 3.5-4.0 (Mohs); Color: Bright silver (plated); Luster: Metallic; Crystal Structure: Polycrystalline (die-cast); Specific Gravity: ~6.6

Formation & geological history

Formed via industrial die-casting and electroplating processes. While the constituent elements (Zn, Al, Cu) have geologic origins in various ore deposits, the specimen is a man-made industrial product.

Uses & applications

Used primarily for costume jewelry, craft charms, and mass-market fashion accessories due to low melting point and ease of manufacturing.

Geological facts

Zinc alloys are commonly referred to as 'pot metal' or 'white metal'. These specific musical note charms are produced via a mold-injection process to create intricate shapes that are impossible for raw natural crystals to form.

Field identification & locations

Identified in the field by its light weight compared to precious metals and the presence of molding seams. It is commonly found in retail craft stores and mass-produced jewelry kits.

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Silver (Native Silver/Alloy Specimen) (Ag (Native Silver element), specifically a 90% Ag / 10% Cu alloy) — mineral

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Metal Alloy (Jewelry)

Not a naturally occurring rock or mineral; likely a metal alloy for jewelry. Possible compositions include sterling silver (92.5% silver, 7.5% copper), or other silver/gold alloys.

Man-made Material (jewelry, metal alloy)
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