Do You Know?

Heliotrope

Care

Transparency

Semitranslucent - Opaque

Luster

Vitreous, Greasy

Bloodstone

Locales

Madagascar, Brazil, India, Russia, Uruguay 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

Green
Red