CS 14

Question 1

Asterism in black star sapphire is caused by

Answer 1

Hematite

Question 2

The most common number of rays in star corundum is

Answer 2

6

Question 3

The name “padparadscha” means

Answer 3

Lotus flower

Question 4

Sapphire’s color change is caused by

Answer 4

Vanadium

Question 5

Which fancy sapphire hue regularly commands top prices?

Answer 5

Pink

Question 6

Green sapphire is

Answer 6

readily available

Question 7

The first flame-fusion star rubies were produced in the

Answer 7

1940s

Question 8

What’s a common trade name for intensely saturated sapphire displaying a combination of pink and orange hues without any noticeable brown coloring?

Answer 8

Padparadscha

Question 9

Which color of star sapphire is usually cut shallow due to parting?

Answer 9

Black

Question 10

What causes the pink color of corundum?

Answer 10

Chromium

Question 11

Fancy sapphires from Montana tend to be

Answer 11

light in tone

Question 12

Color-change sapphire typically changes from blue or violet to

Answer 12

D. strongly reddish purple.

Question 13

Which is the most prized star corundum bodycolor?

Answer 13

Red

Question 14

A major source of black star sapphire is

Answer 14

Thailand

Question 15

The best-quality star corundum is

Answer 15

semi-transparant