GIA COLORED STONE FINAL COMPREHENSIVE EXAM |ACTUAL EXAM QUESTIONS
WITH DETAILED VERIFIED ANSWERS (100% CORRECT ANSWERS) |UPDATED
VERSION |/ALREADY GRADE A
1.Mineral - ANSWER A natural, inorganic substance with a characteristic chemical composition
and usually characteristic structure.
2.What is the name of a natural glass ? - ANSWER Moldavite
3.The only source of gem-quality benitoite is - ANSWER California.
4.How many cleavage directions are found in feldspar, spodumene, and diopside?
A. One
B. Two
C. Three
D. Four - ANSWER B. Two
5.Which of the following three basic chemical elements do all feldspars contain?
A. Aluminum, oxygen, and iron
B. Potassium, calcium, and iron
C. Aluminum, oxygen, and silicon
D. Potassium, calcium, and sodium - ANSWER C. Aluminum, oxygen, and silicon
6.Moonstone is a variety of
A. orthoclase.
B. amazonite.
C. microcline.
D. spodumene. - ANSWER A. orthoclase.
,7.In which era did moonstone out of style?
A. Art Deco
B. Art Nouveau
C. New Age movement
D. Just after World War II - ANSWER A. Art Deco
8.The adularescence of the finest moonstone is
A. blue.
B. green.
C. purple.
D. yellow. - ANSWER A. blue.
9.Tiny tension cracks in moonstone are called
A. lily pads.
B. horsetails.
C. centipedes.
D. discoid fractures. - ANSWER C. centipedes.
10.Rainbow moonstone is a trade term for a type of
A. orthoclase.
B. amazonite.
C. microcline.
D. labradorite. - ANSWER D. labradorite.
11.Spectrolite is a variety of
A. orthoclase.
,B. microcline.
C. moonstone.
D. labradorite. - ANSWER D. labradorite.
12.The greenish blue feldspar that has gridlike white streaks and resembles turquoise is
A. amazonite.
B. orthoclase.
C. spectrolite.
D. labradorite. - ANSWER A. amazonite.
13.What color is hiddenite?
A. Yellow
B. Light pink
C. Orangy pink
D. Medium green - ANSWER D. Medium green
14.Kunzite's most common color is
A. light pink.
B. intense pink.
C. intense violet.
D. intense purple. - ANSWER A. light pink.
15.Light-colored or colorless spodumene can be treated to a kunzite color by
A. heating.
B. diffusion.
C. surface coating.
D. irradiation followed by careful heating. - ANSWER D. irradiation followed by careful heating.
, 16.An intense, unstable green color can be created in spodumene by
A. heating.
B. diffusion.
C. irradiation.
D. irradiation followed by heating - ANSWER C. irradiation.
17.The color of chrome diopside is
A. natural.
B. due to irradiation.
C. due to heat treatment.
D. due to diffusion treatment. - ANSWER A. natural.
18.Which of the following is a commercial source of chrome diopside?
A. Brazil
B. Russia
C. Tanzania
D. Sri Lanka - ANSWER B. Russia
19.Spectrolite is a variety of
A. orthoclase.
B. microcline.
C. moonstone.
D. labradorite. - ANSWER D. labradorite.
20.Mixed cut - ANSWER A cutting style that combines brilliant-cut and step cut facets.
WITH DETAILED VERIFIED ANSWERS (100% CORRECT ANSWERS) |UPDATED
VERSION |/ALREADY GRADE A
1.Mineral - ANSWER A natural, inorganic substance with a characteristic chemical composition
and usually characteristic structure.
2.What is the name of a natural glass ? - ANSWER Moldavite
3.The only source of gem-quality benitoite is - ANSWER California.
4.How many cleavage directions are found in feldspar, spodumene, and diopside?
A. One
B. Two
C. Three
D. Four - ANSWER B. Two
5.Which of the following three basic chemical elements do all feldspars contain?
A. Aluminum, oxygen, and iron
B. Potassium, calcium, and iron
C. Aluminum, oxygen, and silicon
D. Potassium, calcium, and sodium - ANSWER C. Aluminum, oxygen, and silicon
6.Moonstone is a variety of
A. orthoclase.
B. amazonite.
C. microcline.
D. spodumene. - ANSWER A. orthoclase.
,7.In which era did moonstone out of style?
A. Art Deco
B. Art Nouveau
C. New Age movement
D. Just after World War II - ANSWER A. Art Deco
8.The adularescence of the finest moonstone is
A. blue.
B. green.
C. purple.
D. yellow. - ANSWER A. blue.
9.Tiny tension cracks in moonstone are called
A. lily pads.
B. horsetails.
C. centipedes.
D. discoid fractures. - ANSWER C. centipedes.
10.Rainbow moonstone is a trade term for a type of
A. orthoclase.
B. amazonite.
C. microcline.
D. labradorite. - ANSWER D. labradorite.
11.Spectrolite is a variety of
A. orthoclase.
,B. microcline.
C. moonstone.
D. labradorite. - ANSWER D. labradorite.
12.The greenish blue feldspar that has gridlike white streaks and resembles turquoise is
A. amazonite.
B. orthoclase.
C. spectrolite.
D. labradorite. - ANSWER A. amazonite.
13.What color is hiddenite?
A. Yellow
B. Light pink
C. Orangy pink
D. Medium green - ANSWER D. Medium green
14.Kunzite's most common color is
A. light pink.
B. intense pink.
C. intense violet.
D. intense purple. - ANSWER A. light pink.
15.Light-colored or colorless spodumene can be treated to a kunzite color by
A. heating.
B. diffusion.
C. surface coating.
D. irradiation followed by careful heating. - ANSWER D. irradiation followed by careful heating.
, 16.An intense, unstable green color can be created in spodumene by
A. heating.
B. diffusion.
C. irradiation.
D. irradiation followed by heating - ANSWER C. irradiation.
17.The color of chrome diopside is
A. natural.
B. due to irradiation.
C. due to heat treatment.
D. due to diffusion treatment. - ANSWER A. natural.
18.Which of the following is a commercial source of chrome diopside?
A. Brazil
B. Russia
C. Tanzania
D. Sri Lanka - ANSWER B. Russia
19.Spectrolite is a variety of
A. orthoclase.
B. microcline.
C. moonstone.
D. labradorite. - ANSWER D. labradorite.
20.Mixed cut - ANSWER A cutting style that combines brilliant-cut and step cut facets.
