CS 16

Question 1

1. Which industry directly contributed to the decline of the natural pearl industry?
   A. Oil
   B. Tourism
   C. Electronics
   D. Pharmaceuticals

Answer 1

Oil

Question 2

1. A number of similar cultured pearl strands bundled together is called a
   A. hank.
   B. mabé.
   C. bushel.
   D. pearl sac.

Answer 2

hank

Question 3

1. By what date had Kokichi Mikimoto begun culturing whole pearls?
   A. 1908
   B. 1920
   C. 1932
   D. 1954

Answer 3

1908

Question 4

1. Pearl is
   A. a crystal.
   B. a mineral.
   C. an organic gem.
   D. an inorganic gem.

Answer 4

organic gem

Question 5

1. The organ that lines the mollusk’s shell, encloses its soft body, and contains the cells that form pearl sacs and secrete nacre is the
   A. foot.
   B. gonad.
   C. mantle.
   D. ligament.

Answer 5

mantle

Question 6

1. Aragonite is a crystallized form of
   A. silica.
   B. nacre.
   C. conchiolin.
   D. calcium carbonate.

Answer 6

calcium carbonate.

Question 7

1. The four major types of cultured whole pearls are akoya, South Sea, freshwater, and
   A. rice.
   B. Thai.
   C. blister.
   D. Tahitian.

Answer 7

Tahitian

Question 8

1. Between 1992 and 2006, oysters in many important Japanese cultured pearl farming areas began to
   A. multiply rapidly.
   B. produce larger pearls.
   C. stabilize their numbers.
   D. die off in massive numbers.

Answer 8

die off in massive numbers.

Question 9

1. Saltwater cultured whole pearls grow from a
   A. parasite.
   B. bead nucleus only.
   C. mantle-tissue piece only.
   D. mantle-tissue piece and a bead nucleus.

Answer 9

mantle-tissue piece and a bead nucleus.

Question 10

1. The first South Sea cultured pearl farm was founded in which country?
   A. Japan
   B. Tahiti
   C. China
   D. Australia

Answer 10

Australia

Question 11

1. Chinese freshwater cultured pearls first appeared on the international market around
   A. 1960.
   B. 1970.
   C. 1980.
   D. 1990.

Answer 11

1970

Question 12

1. The nacreous layer inside a pearl-bearing mollusk’s shell is called
   A. mantle.
   B. the gonad.
   C. conchiolin.
   D. mother-of-pearl.

Answer 12

mother-of-pearl.

Question 13

1. South Sea cultured pearls are produced principally in Australia, Indonesia, Myanmar, and
   A. India.
   B. Tahiti.
   C. Japan.
   D. the Philippines.

Answer 13

the Philippines

Question 14

1. Seed pearls are
   A. small imitation pearls.
   B. very small natural pearls.
   C. cultured pearls without a bead nucleus.
   D. accidental byproducts of the pearl-culturing process.

Answer 14

very small natural pearls

Question 15

1. The oyster used to grow Tahitian cultured pearls is the
   A. Pinctada fucata.
   B. Pinctada maxima.
   C. Hyriopsis cumingii.
   D. Pinctada margaritifera.

Answer 15

Pinctada margaritifera.