Chrysoberyl MCQs

 

Chrysoberyl: Interactive MCQ Quiz

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

1. Which color range does the book give for chrysoberyl?

Blue, violet, and red
Green, greenish yellow, and yellow-brown
Colorless, white, and black only
Pink, orange, and purple

2. Why does the book say chrysoberyl is particularly suitable for jewelry?

It is very soft and easy to shape
It is always colorless
It has perfect cleavage
It is hard and durable

3. Which two chrysoberyl varieties does the book single out?

Alexandrite and cat’s-eye
Rubellite and indicolite
Geuda and padparadscha
Celestine and cerussite

4. How does alexandrite’s color change, according to the book?

From blue in daylight to green under incandescent light
From yellow in daylight to blue under incandescent light
From green in daylight to red, mauve, or brown under incandescent light
From pink in daylight to colorless under incandescent light

5. Why have certain synthetic stones been produced, according to the book?

To imitate the cat’s-eye line
To imitate alexandrite’s color change
To imitate chrysoberyl’s crystal shape
To imitate its hardness only

6. What appearance does the book describe for cat’s-eye chrysoberyl?

A six-rayed star across a blue stone
A red flash inside a transparent green stone
Alternating pink and green bands
A near-white line across a yellowish gray stone

7. Which inclusions may cause the cat’s-eye line?

Canal- or featherlike fluid inclusions, or rutile needles
Gas bubbles alone
Alternating bands of blue and yellow sapphire
Iron oxide staining on the surface

8. Which cat’s-eye color does the book describe as most highly prized?

Dark blue with a silver line
Colorless with a black line
Light golden brown, often showing a “milk and honey” effect
Bright pink with green bands

9. What other name was used for yellow chrysoberyl popular in Portuguese jewelry?

Bonamite
Chrysolite
Siberite
Sherry topaz

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

Trigonal, complex borosilicate, hardness 7½
Orthorhombic, calcium carbonate, hardness 3½
Cubic, aluminum oxide, hardness 9
Orthorhombic, beryllium aluminum oxide, hardness 8½