Peridot MCQs

 

Peridot: Interactive MCQ Quiz

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

1. What does the book say gemologists call gem-quality olivine?

Sillimanite
Peridot
Bronzite
Iolite

2. What does the book say gives peridot its green color?

Chromium
Manganese
Cobalt
Iron

3. What distinctive luster does the book describe for peridot?

Oily or greasy
Metallic
Adamantine only
Dull and earthy

4. What visible effect can high birefringence produce in larger peridot specimens?

A six-rayed star across the surface
A cat’s-eye line
Doubling of the back facets when viewed from the front
Alternating pink and green bands

5. From what viewing position may the doubling of peridot’s back facets be seen?

From behind the stone only
From the front of a larger specimen
Only through a microscope
Only after the stone is powdered

6. How common are good-quality peridot crystals, according to the book?

They are found everywhere in abundance
They occur only as synthetic stones
They are the most common olivine material
They are very rare

7. Which location does the book list as a source of peridot?

St. John’s Island, Egypt
Tsumeb, Namibia
Cumbria, England
Pala, California

8. From where does the book say the Crusaders brought peridot to Europe?

Sri Lanka
The Urals in Russia
St. John’s Island in the Red Sea
Paraiba, Brazil

9. For how long does the book say peridot had been mined on St. John’s Island?

About 350 years
Over 3,500 years
Exactly 1,000 years
Since the 19th century

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

Orthorhombic, aluminum silicate, hardness 7½
Trigonal, complex borosilicate, hardness 7½
Orthorhombic, iron oxide, hardness 6½
Orthorhombic, magnesium iron silicate, hardness 6½