Dravite (Tourmaline) MCQs

 

Dravite (Tourmaline): Interactive MCQ Quiz

Choose one answer for each question, then select Submit Quiz. Your score and explanations will appear below.

1. What is the usual color of dravite, according to the book?

Bright red
Dark brown
Colorless
Vivid blue

2. Which element does the book say dravite is rich in?

Iron
Chromium
Calcium
Magnesium

3. What effect can heat treatment have on dravite’s color?

It can lighten the color
It always turns it blue
It makes it opaque black
It removes all color permanently

4. How does the book recommend cutting dravite to show a lighter, more attractive color?

Put the table facet perpendicular to the crystal’s length
Cut it only as a cabochon
Put the table facet parallel to the crystal’s length
Avoid making any table facet

5. Why does the book say the orientation of dravite’s cut matters?

The crystal has no color in any direction
Strong dichroism makes the appearance depend on viewing direction
Its hardness changes with the cut
It has a metallic surface that must be hidden

6. Which crystal arrangements may dravite form?

Only flat sheets
Only rounded nodules
Only flower-like iron roses
Single crystals or parallel or radiating groups

7. Where does the book say brown and yellow tourmaline occur together?

In the gem gravels of Sri Lanka
In the limestone caves of Italy
In the yellow clays of Siberia only
In the iron deposits near Lake Superior

8. Which country is listed as another place where dravite is found?

Iceland
Namibia
Canada
England

9. Where does the name “dravite” come from?

A Greek word meaning “without color”
The district of Drave in Austria
A region in Brazil
The Latin word for red

10. Which set of properties matches dravite in the book’s table?

Trigonal, iron oxide, hardness 6½
Trigonal, zinc carbonate, hardness 5
Hexagonal, silica, hardness 7
Trigonal, complex borosilicate, hardness 7½