Diamond MCQs

 

Diamond: 10 Interactive MCQs

Choose one answer for each question, then select Submit Quiz. If an answer is wrong or left blank, the quiz explains the correct answer.

1. What hardness does the book give for diamond?

2½ 4 10 7

2. Which qualities does the book connect with diamond’s high value?

Hardness, exceptional luster, and brilliant fire Softness, opacity, and metallic luster Low density and easy cleavage Its ability to occur only in one color

3. Which diamond variety does the chapter describe as most popular?

Black diamond Brown diamond Green diamond Pure, colorless diamond

4. What does the book say can cause different diamond colors?

The gemstone’s cut alone Impurities present in the diamond Exposure to river water The metal used to set the stone

5. What is the usual form of a natural diamond crystal described in the book?

Octahedral, with rounded edges and slightly convex faces A long cylinder with flat ends A six-sided prism with sharp, flat faces A smooth dome with a flat base

6. What does the book say about fashioning and polishing diamond?

It cannot be split or polished It can be polished by any soft gemstone Its perfect cleavage helps early fashioning, and it can be polished only by another diamond It must be polished before it is cleaved

7. Under what conditions does the book say diamond forms?

At the surface in cool, low-pressure conditions In river gravels at ordinary temperatures Inside shallow caves under low pressure Deep underground under high temperatures and pressures

8. What change followed the discovery of diamond in South African kimberlite around 1870?

Diamond mining ended in river deposits Extraction began to involve processing vast quantities of rock Diamonds could no longer be found in crystals India became the only producer

9. What are the four C’s used to grade diamonds?

Color, cut, clarity, and carat Crystal, color, composition, and cleavage Carving, clarity, crystal, and cost Cut, carat, corrosion, and color

10. What is the brilliant cut designed to do?

Keep the diamond’s natural crystal faces unchanged Make the diamond opaque Reflect as much light as possible out through the front of the stone Hide all color and inclusions by covering the stone’s surface