CS 5

Question 1

The flux used in the flux process is a solid material that, when molten,

Answer 1

dissolves other materials

Question 2

The crucibles that work best for flux growth are made of

Answer 2

Platinum

Question 3

A laboratory-created gem with essentially the same chemical composition, crystal structure, and properties as its natural counterpart is a(n)

Answer 3

Synthetic

Question 4

Which process uses a heating unit that passes over a rotating solid rod of chemicals until it forms a synthetic crystal?

Answer 4

Floating Zone

Question 5

Synthetic turquoise is most likely produced by which process?

Answer 5

Ceramic

Question 6

Which process involves heating finely ground powder, sometimes under pressure, to produce a fine-grained solid material?

Answer 6

Ceramic

Question 7

Which synthetic process developed rapidly due to laser research in the 1960s?

Answer 7

Pulling

Question 8

The two main types of processes for synthetic gem production are melt and

Answer 8

Solution

Question 9

Which process dissolves nutrients in chemicals to form synthetic crystals?

Answer 9

Flux Growth

Question 10

Synthetic opal is grown using microscopic silica spheres that are produced by

Answer 10

Precipitation

Question 11

Which of the following can help trained observers separate natural from synthetic gems?

Answer 11

Internal and external characteristics

Question 12

Low cost and high volume characterize which process?

Answer 12

Flame Fusion

Question 13

A snakeskin structural pattern is typical of

Answer 13

Opal

Question 14

The hydrothermal growth process is the only method used to produce which synthetic gem?

Answer 14

Quartz

Question 15

Which synthetic process uses an autoclave?

Answer 15

D. Hydrothermal growth