Comparison · Quartz Family vs Silicate Minerals
Quartz vs Titanite
Quartz and Titanite are easy to confuse. Quartz is harder (Mohs 7) than Titanite (Mohs 5.5), so Quartz will scratch Titanite 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. Below is a side-by-side comparison of their properties and the quick tests that separate them.
Key differences between Quartz and Titanite
- Quartz is harder (Mohs 7) than Titanite (Mohs 5.5), so Quartz will scratch Titanite 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.
- Titanite feels noticeably heavier for its size (specific gravity 3.5 versus 2.65 for Quartz).
- Hold a thin edge to the light: Quartz is Transparent to translucent, Titanite is transparent.
- They overlap in yellow, black, and brown, but Quartz also comes in clear, purple, pink, and gray and Titanite also comes in green.
- Well-formed crystals give it away: Quartz is Trigonal, Titanite is monoclinic.
Quartz vs Titanite properties
| Property | Quartz | Titanite |
|---|---|---|
| Type | Quartz Family | Silicate Minerals |
| Mohs hardness | 7 | 5.5 |
| Luster | Vitreous, greasy on fracture surfaces | adamantine |
| Streak | White | White |
| Transparency | Transparent to translucent | transparent |
| Specific gravity | 2.65 | 3.5 |
| Crystal system | Trigonal | monoclinic |
| Common colors | Colorless, White, Purple (amethyst), Yellow (citrine), Pink (rose), Brown/black (smoky) | Green, Yellow, Brown, Black |
| Rarity | common | uncommon |
| Typical specimen value | $5–$250+ | $15–$600+ |
Which is more valuable?
Titanite is usually the more valuable of the two: a typical collector specimen runs about $90 against $35 for Quartz, and premium Titanite can reach $600 or more.
About Quartz
Quartz is silicon dioxide, SiO2, one of the most abundant minerals in Earth's continental crust, crystallizing in the trigonal division of the hexagonal crystal system with a hardness of 7 that makes it a standard reference point on the Mohs scale. Its six-sided prismatic crystals, often terminated by pyramidal points, are among the most recognizable crystal shapes in mineralogy. Quartz occurs in nearly every rock type and geologic setting, from granite pegmatites to sedimentary sandstones to hydrothermal veins.
About Titanite
Titanite, also called sphene, is a calcium titanium silicate known for its high luster, strong dispersion, and characteristic wedge-shaped crystals. Specimens are often green, yellow, or brown and may be transparent enough to facet, prized by collectors for their fire.
Quartz vs Titanite FAQ
Is Quartz the same as Titanite?
No. Quartz is a quartz family while Titanite is a silicate mineral. Quartz is harder (Mohs 7) than Titanite (Mohs 5.5), so Quartz will scratch Titanite 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.
How can you tell Quartz from Titanite?
Quartz is harder (Mohs 7) than Titanite (Mohs 5.5), so Quartz will scratch Titanite 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. Titanite feels noticeably heavier for its size (specific gravity 3.5 versus 2.65 for Quartz). Hold a thin edge to the light: Quartz is Transparent to translucent, Titanite is transparent.
Which is harder, Quartz or Titanite?
Quartz is harder: Mohs 7 against Mohs 5.5 for Titanite.
Which is more valuable, Quartz or Titanite?
Titanite is usually the more valuable of the two: a typical collector specimen runs about $90 against $35 for Quartz, and premium Titanite can reach $600 or more.
