1
Q
- What is the color of the markings that sandstone matrix creates in turquoise?
A. Tan
B. Green
C. Dark red
D. Dark brown
A
Tan
2
Q
- The trade term for top-color turquoise is
A. Persian.
B. Mexican.
C. Egyptian.
D. American.
A
Persian
3
Q
- The purest blue colors of turquoise are caused by
A. iron.
B. cobalt.
C. copper.
D. titanium.
A
Copper
4
Q
- Which of the following does turquoise usually form in?
A. Quartz
B. Marble
C. Granite
D. Limonite
A
Limonite
5
Q
- Reconstructed turquoise is
A. treated turquoise.
B. imitation turquoise.
C. synthetic turquoise.
D. stabilized turquoise.
A
imitation turquoise
6
Q
- The world’s largest producer of turquoise today is
A. Iran.
B. Egypt.
C. Afghanistan.
D. the southwestern United States.
A
the southwestern United States
7
Q
- The lapis lazuli trade grade that’s often spotted with green and shows obvious calcite is
A. Afghan.
B. Chilean.
C. Siberian.
D. Egyptian.
A
Chilean
8
Q
- The only source of charoite is
A. Iran.
B. Russia.
C. South Africa.
D. the United States.
A
Russia
9
Q
- Stabilized turquoise is a trade term for
A. synthetic turquoise.
B. a turquoise imitation.
C. reconstructed turquoise.
D. polymer-impregnated turquoise.
A
polymer-impregnated turquoise
10
Q
- The world’s major source of lapis lazuli is
A. Chile.
B. Russia.
C. Afghanistan.
D. the United States.
A
Afghanistan
11
Q
- The finest color of turquoise is
A. light blue.
B. dark green-blue.
C. dark greenish blue.
D. intense medium blue.
A
intense medium blue
12
Q
- The major source for top-color turquoise today is
A. Iran.
B. China.
C. Egypt.
D. Afghanistan.
A
China
13
Q
- The finest trade grade of lapis lazuli is
A. Afghan.
B. Chilean.
C. Siberian.
D. Egyptian.
A
Afghan
14
Q
- Malachite’s color is caused by
A. nickel.
B. copper.
C. vanadium.
D. chromium.
A
copper
15
Q
- A treatment that makes turquoise less porous without the use of polymers and improves its ability to take a good polish is
A. diffusion.
B. irradiation.
C. heating and dyeing.
D. the Zachery method.
A
the Zachery method
