Comparison · Metals & Alloys vs Native Elements
Iron vs Platinum
Iron and Platinum are easy to confuse. Both sit near Mohs 4, so a scratch test alone will not separate them. Lean on luster, streak and heft instead. Below is a side-by-side comparison of their properties and the quick tests that separate them.
Key differences between Iron and Platinum
- Both sit near Mohs 4, so a scratch test alone will not separate them. Lean on luster, streak and heft instead.
- Streak color differs: Iron leaves a gray to dark gray streak on unglazed porcelain, Platinum leaves steel gray to silver-white.
- Both look metallic, so compare color, tarnish and weight rather than shine.
- Platinum feels noticeably heavier for its size (specific gravity 18 versus 7.87 for Iron).
- They overlap in gray, but Iron also comes in brown.
Iron vs Platinum properties
| Property | Iron | Platinum |
|---|---|---|
| Type | Metals & Alloys | Native Elements |
| Mohs hardness | 4 | 4.25 |
| Luster | metallic | metallic |
| Streak | Gray to dark gray | Steel gray to silver-white |
| Transparency | opaque | opaque |
| Specific gravity | 7.87 | 18 |
| Crystal system | varies | cubic |
| Common colors | Silver-gray, Dark gray, Rust brown | Silver, Gray, Steel gray |
| Rarity | common | legendary |
| Typical specimen value | $1–$100+ | $60–$8000+ |
Which is more valuable?
Platinum is usually the more valuable of the two: a typical collector specimen runs about $900 against $10 for Iron, and premium Platinum can reach $8000 or more.
About Iron
Iron is a gray metallic element and the base metal for steel. In everyday scans it may appear as wrought iron, cast iron, raw metal, hardware, tools, or rusty objects.
About Platinum
Platinum is a rare native metallic element with a silvery to steel-gray color, very high density, and strong resistance to corrosion. In nature it occurs as small grains, flakes, and nuggets rather than well-formed crystals, often within ultramafic rocks or placer gravels.
Iron vs Platinum FAQ
Is Iron the same as Platinum?
No. Iron is a metals & alloy while Platinum is a native element. Both sit near Mohs 4, so a scratch test alone will not separate them. Lean on luster, streak and heft instead.
How can you tell Iron from Platinum?
Both sit near Mohs 4, so a scratch test alone will not separate them. Lean on luster, streak and heft instead. Streak color differs: Iron leaves a gray to dark gray streak on unglazed porcelain, Platinum leaves steel gray to silver-white. Both look metallic, so compare color, tarnish and weight rather than shine.
Which is harder, Iron or Platinum?
They are about equally hard, both near Mohs 4.
Which is more valuable, Iron or Platinum?
Platinum is usually the more valuable of the two: a typical collector specimen runs about $900 against $10 for Iron, and premium Platinum can reach $8000 or more.
