Missed Questions

Question 1

Pariba tourmaline is colored by

Answer 1

Copper

Question 2

For the most part, rubellite tourmaline is colored by

Answer 2

Manganese

Question 3

Which countries produce the finest peridot?

Answer 3

Myanmar and Pakistan

Question 4

Metamict zircons are described as

Answer 4

Low zircons

Question 5

What is Peridot’s rating on the Mohs scale?

Answer 5

6.5-7

Question 6

The most fine chrome tourmaline comes from Kenya and

Answer 6

Tanzania

Question 7

The color of blue zircon is usually due to

Answer 7

Heat treatment

Question 8

Mutton-fat Jade is a trade name for

Answer 8

Top quality white nephrite

Question 9

Type C Jadeite is

Answer 9

Dyed

Question 10

Jadeite’s finest green color is caused by

Answer 10

Chromium

Question 11

Type B Jadeite is

Answer 11

Bleached and impregnated

Question 12

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

Answer 12

Irradiation followed by careful heating

Question 13

Spectrolite is a variety of

Answer 13

Labradorite

Question 14

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

Answer 14

Irradiation

Question 15

Which of the following three basic chemical elements do all feldspar contain

Answer 15

Aluminum, oxygen, silicon

Question 16

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

Answer 16

Russia

Question 17

Kunzite’s most common color is

Answer 17

Light pink

Question 18

Yellow spodumene is called

Answer 18

Triphane

Question 19

The color of chrome diopside is

Answer 19

Natural

Question 20

A procedure that includes cleaning, buffing, and sometimes bleaching, done to make cultured pearls presentable and appealing is called

Answer 20

A process

Question 21

When mollusks live in cooler water, they form

Answer 21

Pearls with higher luster

Question 22

The matching level that describes a group of pearls with minor variations in uniformity is

Answer 22

Good

Question 23

Pearls that show noticeable blemishes are

Answer 23

Moderately spotted

Question 24

The nacre quality classification described as “Nucleus not noticeable, no chalky appearance” is

Answer 24

Acceptable

Question 25

What happens when saltwater cultured pearls are exposed to gamma rays?

Answer 25

Bead nucleus darkens

Question 26

To bleach akoya pearls, processors use

Answer 26

A combination of hydrogen peroxide and fluorescent light

Question 27

By the beginning of 2010, which area had emerged as the world's most important ruby source?

Answer 27

Montepuez in Northern Mozambique

Question 28

What location supplied most of the world's commercial quality rubies through the 1990's?

Answer 28

Mong Hsu

Question 29

Rubies that come from marble deposits are typically low in

Answer 29

Iron

Question 30

The rubies found in the mountains of Takijikstan, Afghanistan, and Pakistan are all

Answer 30

Marble-hosted