Jewelry Metals

What is the most outstanding visual feature of silver?

• Its conductivity

• Its abundance

• Its rarity

• Its luster

Why do novice jewelry makers often start with silver?

• Because it is inexpensive

• Because it is abundant

• Because it does not tarnish

• Because it conducts heat well, making it harder to work with

What causes silver to tarnish?

• Being submerged in water

• Exposure to sunlight

• A chemical reaction with hydrogen sulfide

• Exposure to oxygen

What is the most common silver alloy used in jewelry?

• Mexican silver

• Coin silver

• Sterling silver

• Britannia silver

What percentage of silver does sterling silver contain?

• 90%

• 92.5%

• 80%

• 95%

Which metal is often added to silver alloys to increase hardness?

• Nickel

• Copper

• Zinc

• Gold

What does the term 'Mexican silver' refer to?

• A silver alloy containing 95% silver

• A type of silver jewelry

• Both B and C

• Silver used as currency in Mexico

What is the code stamped on sterling silver pieces?

• 958

• 925

• 800

• 900

Which of the following metals is not a part of the platinum group?

• Iridium

• Osmium

• Rhodium

• Copper

What is the primary use of platinum in the United States?

• Electronics

• Currency

• Catalytic converters

• Jewelry