Do You Know?

Care

Transparency

Semitransparent - Translucent

Luster

Vitreous, Greasy

Carnelian

Locales

Madagascar, China, Brazil, Botswana, Portugal, Austria, Canada and more

Hardness

7
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
10

Treatment

Interesting Fact

Chemical Formula

SiO2

Composition

silicon dioxide

Colours

Red
Orange