Rutile MCQs

 

Rutile: Interactive Gemstone MCQ Quiz

Choose one answer for each question, then select Submit Quiz. Your score and explanations will appear below. Incorrect and unanswered questions include an explanation of the correct answer.

1. What is the composition of rutile?

Tin oxide Calcium tungstate Titanium oxide Complex silicate

2. Which crystal structure is listed for rutile?

Tetragonal Cubic Monoclinic Triclinic

3. What hardness does the book give for rutile?

3 4 5 6

4. How does the book compare rutile’s fire with diamond’s?

Rutile has no fire at all Rutile can show many times the fire of diamond Diamond has many times the fire of rutile Their fire is always identical

5. What can mask rutile’s strong fire?

Its red, brown, or black body color Its colorless body in every specimen A layer of tin oxide Its low specific gravity

6. How is rutile most usually seen in gemstones?

As large colorless crystals inside diamond As blue, rounded grains in feldspar As reddish-brown, needlelike inclusions in quartz or other stones As green bands in agate

7. What effect can rutile crystals create inside another stone by reflecting light?

A color-change effect A metallic sheen across every facet A colorless halo A star effect

8. In the book’s illustration, when is the stone described as sagenite?

When it contains no inclusions When the rutile inclusions intersect at 60° When its body color is black When it is cut as a baguette

9. In which settings does the book say rutile occurs?

Igneous and metamorphic rocks, and alluvial deposits Only in coral reefs Only in pegmatites Only in sedimentary coal beds

10. What use does the book mention for black rutile material?

As a source of tin for ornaments In transparent wedding jewelry As a pigment for blue glass In mourning jewelry