CS 26

Question 1

Spectrolite is a variety of

Answer 1

labradorite

Question 2

Kunzite’s most common color is

Answer 2

light pink

Question 3

Which of the following is the only known commercial source of chrome diopside?

Answer 3

Russia

Question 4

An intense, unstable green color can be created in spodumene by

Answer 4

irradiation

Question 5

Light-colored or colorless spodumene can be treated to a kunzite color by

Answer 5

irradiation followed by careful heating

Question 6

Rainbow moonstone is a trade term for a type of

Answer 6

labradorite

Question 7

The adularescence of the finest moonstones is

Answer 7

blue

Question 8

How many cleavage directions are found in feldspar, spodumene, and diopside?

Answer 8

2

Question 9

Which of the following three basic chemical elements do all feldspars contain?

Answer 9

Aluminum, oxygen, and silicon. All feldspars contain aluminum, oxygen, and silicon, but potassium, calcium, and sodium can also be major components

Question 10

Tiny tension cracks in moonstone are called

Answer 10

centipedes

Question 11

By which era had moonstone gone out of style?

Answer 11

Art Deco

Question 12

Yellow spodumene is called

Answer 12

triphane

Question 13

The color of chrome diopside is

Answer 13

natural

Question 14

The greenish blue feldspar that has gridlike white streaks and resembles turquoise is

Answer 14

amazonite

Question 15

The best known feldspar species that includes moonstone is

Answer 15

Orthoclase