Identification guide · Metals & Alloys
How to Identify Titanium
Titanium is usually silver, gray, and dark gray with a metallic luster and is opaque. It has a Mohs hardness of 6. It is about as hard as window glass: a knife barely marks it, while a steel file (Mohs 6.5) will. Its streak is silver-gray. It is most often confused with Ilmenite, Stainless Steel, and Tungsten; the tests below separate them.
Titanium identification checklist
| Color | Silver, Gray, Dark gray | Look at a clean, dry surface in daylight. Color zoning, banding or spots are as diagnostic as the hue. |
|---|---|---|
| Luster | Metallic | Turn it under a lamp: a true metallic shine reflects like polished metal and stays opaque at thin edges. |
| Transparency | Opaque | Hold a thin edge up to a bright light and note whether light passes through. |
| Mohs hardness | 6 | It is about as hard as window glass: a knife barely marks it, while a steel file (Mohs 6.5) will. |
| Streak | Silver-gray | Drag a corner across unglazed porcelain (the back of a bathroom tile) and check the powder color. |
| Cleavage | None | |
| Fracture | Ductile to uneven | |
| Specific gravity | 4.5 | Very heavy, metallic heft (specific gravity about 4.5). |
Titanium look-alikes and how to tell them apart
Both sit near Mohs 6, so a scratch test alone will not separate them. Lean on luster, streak and heft instead. Titanium vs Ilmenite →
Both sit near Mohs 6, so a scratch test alone will not separate them. Lean on luster, streak and heft instead. Titanium vs Stainless Steel →
Tungsten is harder (Mohs 7.5) than Titanium (Mohs 6), so Tungsten will scratch Titanium and not the other way round. It is about as hard as window glass: a knife barely marks it, while a steel file (Mohs 6.5) will. Titanium vs Tungsten →
Both sit near Mohs 6, so a scratch test alone will not separate them. Lean on luster, streak and heft instead.
Field tips
- Look for a gray-silver metal that may appear slightly darker than stainless steel.
- Titanium is lightweight relative to many dense metals.
- Anodized titanium can show blue, purple, yellow, or rainbow colors.
- Common objects include rings, watches, medical parts, tools, and outdoor gear.
Titanium identification FAQ
How can you tell if a rock is Titanium?
Check the color (silver, gray, and dark gray), the metallic luster, a Mohs hardness of 6 and a silver-gray streak. Photographing it with the StoneSnap app gives a match in seconds.
What is the hardness of Titanium?
Titanium has a Mohs hardness of 6. It is about as hard as window glass: a knife barely marks it, while a steel file (Mohs 6.5) will.
What is the difference between Titanium and Ilmenite?
Titanium (Mohs 6, metallic luster) and Ilmenite (Mohs 5.5, metallic luster) look alike, but hardness, streak and heft usually separate them. See the full Titanium vs Ilmenite comparison for a side-by-side table.
Is Titanium worth anything?
Entry-level Titanium specimens sell for around $5, typical collector pieces about $40, and premium examples $500 or more depending on size, quality and locality.
What color is Titanium?
Titanium is most often silver, gray, and dark gray. Color varies with impurities and locality, so confirm with hardness and luster rather than color alone.
