Comparison · Minerals vs Quartz Family
Charoite vs Quartz
Charoite and Quartz are easy to confuse. Quartz is harder (Mohs 7) than Charoite (Mohs 5–6), so Quartz will scratch Charoite 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 Charoite and Quartz
- Quartz is harder (Mohs 7) than Charoite (Mohs 5–6), so Quartz will scratch Charoite 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.
- Hold a thin edge to the light: Charoite is Translucent to opaque, Quartz is Transparent to translucent.
- They overlap in purple and black, but Charoite also comes in white and Quartz also comes in clear, yellow, pink, gray, and brown.
- Well-formed crystals give it away: Charoite is Monoclinic, Quartz is Trigonal.
Charoite vs Quartz properties
| Property | Charoite | Quartz |
|---|---|---|
| Type | Minerals | Quartz Family |
| Mohs hardness | 5–6 | 7 |
| Luster | Vitreous to pearly/silky | Vitreous, greasy on fracture surfaces |
| Streak | White | White |
| Transparency | Translucent to opaque | Transparent to translucent |
| Specific gravity | 2.54–2.68 | 2.65 |
| Crystal system | Monoclinic | Trigonal |
| Common colors | Lilac, Purple, Violet with white/black veining | Colorless, White, Purple (amethyst), Yellow (citrine), Pink (rose), Brown/black (smoky) |
| Rarity | common | common |
| Typical specimen value | $2–$150+ | $5–$250+ |
Which is more valuable?
Quartz is usually the more valuable of the two: a typical collector specimen runs about $35 against $20 for Charoite, and premium Quartz can reach $250 or more.
About Charoite
Charoite is a rare silicate mineral known for its swirling lavender to deep purple color and fibrous, interlocking crystal structure that produces a silky, almost pearly chatoyance. Its complex formula involves potassium, sodium, calcium, and silicon, and until recently it was found at only a single locality on Earth. The intricate mottled patterns of purple, white, and black seen in polished charoite come from intergrown veins of the mineral with aegirine and microcline.
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.
Charoite vs Quartz FAQ
Is Charoite the same as Quartz?
No. Charoite is a mineral while Quartz is a quartz family. Quartz is harder (Mohs 7) than Charoite (Mohs 5–6), so Quartz will scratch Charoite 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 Charoite from Quartz?
Quartz is harder (Mohs 7) than Charoite (Mohs 5–6), so Quartz will scratch Charoite 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. Hold a thin edge to the light: Charoite is Translucent to opaque, Quartz is Transparent to translucent. They overlap in purple and black, but Charoite also comes in white and Quartz also comes in clear, yellow, pink, gray, and brown.
Which is harder, Charoite or Quartz?
Quartz is harder: Mohs 7 against Mohs 5–6 for Charoite.
Which is more valuable, Charoite or Quartz?
Quartz is usually the more valuable of the two: a typical collector specimen runs about $35 against $20 for Charoite, and premium Quartz can reach $250 or more.
