Jewelry Design Gemstones and Precious Stones 3

Question 1

What term describes the internal glow or billowy light effect seen in moonstones?

Accepted Answer

Adularescence

Answer

Labradorescence

Answer

Opalescence

Answer

Iridescence

Question 2

Which gemstone is also known as 'fool's gold' and should NOT be confused with precious metals?

Accepted Answer

Pyrite

Answer

Citrine

Answer

Marcasite

Answer

Chalcopyrite

Question 3

What is the refractive index used to measure in gemology?

Accepted Answer

How light bends when entering a gem

Answer

A gem's weight

Answer

A gem's hardness

Answer

A gem's color saturation

Question 4

Which synthetic gemstone was created by the Verneuil flame fusion process and is commonly used as a diamond simulant?

Accepted Answer

Synthetic corundum

Answer

Cubic zirconia

Answer

Synthetic moissanite

Answer

YAG

Question 5

What does the term 'inclusion' refer to in gemology?

Accepted Answer

Internal characteristics trapped during crystal growth

Answer

A gem's surface scratches

Answer

The gem's overall clarity grade

Answer

A treatment applied to the stone

Question 6

What is the chemical composition of diamond?

Accepted Answer

Pure carbon (C)

Answer

Silicon dioxide (SiO2)

Answer

Aluminum oxide (Al2O3)

Answer

Calcium carbonate (CaCO3)