Comparison · Minerals
Graphite vs Hematite
Graphite and Hematite are easy to confuse because both are minerals. Hematite is harder (Mohs 6) than Graphite (Mohs 1–2), so Hematite will scratch Graphite and not the other way round. A fingernail (Mohs 2.5) scratches it easily. Below is a side-by-side comparison of their properties and the quick tests that separate them.
Key differences between Graphite and Hematite
- Hematite is harder (Mohs 6) than Graphite (Mohs 1–2), so Hematite will scratch Graphite and not the other way round. A fingernail (Mohs 2.5) scratches it easily.
- Streak color differs: Graphite leaves a black, shiny gray-black streak on unglazed porcelain, Hematite leaves red to reddish-brown.
- Both look metallic, so compare color, tarnish and weight rather than shine.
- Hematite feels noticeably heavier for its size (specific gravity 5.3 versus 2.09–2.23 for Graphite).
- Hold a thin edge to the light: Graphite is Opaque, Hematite is opaque.
- They overlap in black and gray, but Hematite also comes in red.
- Well-formed crystals give it away: Graphite is Hexagonal, Hematite is trigonal.
Graphite vs Hematite properties
| Property | Graphite | Hematite |
|---|---|---|
| Type | Minerals | Minerals |
| Mohs hardness | 1–2 | 6 |
| Luster | Metallic to dull/earthy | metallic |
| Streak | Black, shiny gray-black | Red to reddish-brown |
| Transparency | Opaque | opaque |
| Specific gravity | 2.09–2.23 | 5.3 |
| Crystal system | Hexagonal | trigonal |
| Common colors | Black, Steel-gray | Metallic Gray, Black, Red |
| Rarity | common | common |
| Typical specimen value | $2–$150+ | $2–$50+ |
Which is more valuable?
Graphite is usually the more valuable of the two: a typical collector specimen runs about $20 against $10 for Hematite, and premium Graphite can reach $150 or more.
About Graphite
Graphite is native carbon, chemically identical to diamond but crystallizing in a completely different structure of stacked hexagonal sheets that slide easily past one another. This layered atomic arrangement gives graphite its softness, greasy feel, and ability to conduct electricity, all properties diamond lacks despite sharing the same element. It forms through the metamorphism of carbon-rich sedimentary rocks or through the crystallization of carbon in igneous and hydrothermal settings.
About Hematite
Hematite is the most important iron ore mineral. Its name comes from the Greek word for blood, referring to its red streak.
Graphite vs Hematite FAQ
Is Graphite the same as Hematite?
No. Both are minerals, but they are distinct species with different hardness, streak or luster. Hematite is harder (Mohs 6) than Graphite (Mohs 1–2), so Hematite will scratch Graphite and not the other way round. A fingernail (Mohs 2.5) scratches it easily.
How can you tell Graphite from Hematite?
Hematite is harder (Mohs 6) than Graphite (Mohs 1–2), so Hematite will scratch Graphite and not the other way round. A fingernail (Mohs 2.5) scratches it easily. Streak color differs: Graphite leaves a black, shiny gray-black streak on unglazed porcelain, Hematite leaves red to reddish-brown. Both look metallic, so compare color, tarnish and weight rather than shine.
Which is harder, Graphite or Hematite?
Hematite is harder: Mohs 6 against Mohs 1–2 for Graphite.
Which is more valuable, Graphite or Hematite?
Graphite is usually the more valuable of the two: a typical collector specimen runs about $20 against $10 for Hematite, and premium Graphite can reach $150 or more.
