Comparison · Metals & Alloys
Nickel vs Stainless Steel
Nickel and Stainless Steel are easy to confuse because both are metals & alloys. Stainless Steel is harder (Mohs 5.5) than Nickel (Mohs 4), so Stainless Steel will scratch Nickel and not the other way round. A steel knife blade (Mohs 5.5) scratches it; a copper coin does not. Below is a side-by-side comparison of their properties and the quick tests that separate them.
Key differences between Nickel and Stainless Steel
- Stainless Steel is harder (Mohs 5.5) than Nickel (Mohs 4), so Stainless Steel will scratch Nickel and not the other way round. A steel knife blade (Mohs 5.5) scratches it; a copper coin does not.
- Streak color differs: Nickel leaves a gray streak on unglazed porcelain, Stainless Steel leaves gray to silver-gray.
- Both look metallic, so compare color, tarnish and weight rather than shine.
- Nickel feels noticeably heavier for its size (specific gravity 8.9 versus 7.9 for Stainless Steel).
- They overlap in gray, but Nickel also comes in yellow.
Nickel vs Stainless Steel properties
| Property | Nickel | Stainless Steel |
|---|---|---|
| Type | Metals & Alloys | Metals & Alloys |
| Mohs hardness | 4 | 5.5 |
| Luster | metallic | metallic |
| Streak | Gray | Gray to silver-gray |
| Transparency | opaque | opaque |
| Specific gravity | 8.9 | 7.9 |
| Crystal system | varies | varies |
| Common colors | Silver, Gray, Slightly yellow silver | Silver, Gray, Steel gray |
| Rarity | common | common |
| Typical specimen value | $1–$120+ | $1–$200+ |
Which is more valuable?
Stainless Steel is usually the more valuable of the two: a typical collector specimen runs about $20 against $15 for Nickel, and premium Stainless Steel can reach $200 or more.
About Nickel
Nickel is a hard silvery metal used in plating, coins, stainless steel, batteries, magnets, jewelry alloys, and industrial alloys.
About Stainless Steel
Stainless steel is a silvery iron-based alloy commonly used in watch bands, rings, tools, cookware, and hardware. It is not a natural mineral specimen, but it is an in-scope visible material for StoneSnap when a scan clearly shows a metallic manufactured object.
Nickel vs Stainless Steel FAQ
Is Nickel the same as Stainless Steel?
No. Both are metals & alloys, but they are distinct species with different hardness, streak or luster. Stainless Steel is harder (Mohs 5.5) than Nickel (Mohs 4), so Stainless Steel will scratch Nickel and not the other way round. A steel knife blade (Mohs 5.5) scratches it; a copper coin does not.
How can you tell Nickel from Stainless Steel?
Stainless Steel is harder (Mohs 5.5) than Nickel (Mohs 4), so Stainless Steel will scratch Nickel and not the other way round. A steel knife blade (Mohs 5.5) scratches it; a copper coin does not. Streak color differs: Nickel leaves a gray streak on unglazed porcelain, Stainless Steel leaves gray to silver-gray. Both look metallic, so compare color, tarnish and weight rather than shine.
Which is harder, Nickel or Stainless Steel?
Stainless Steel is harder: Mohs 5.5 against Mohs 4 for Nickel.
Which is more valuable, Nickel or Stainless Steel?
Stainless Steel is usually the more valuable of the two: a typical collector specimen runs about $20 against $15 for Nickel, and premium Stainless Steel can reach $200 or more.
