Gold Design Gold Purity and Alloys

Question 1

What does the hallmark '750' stamped on gold jewelry indicate?

Accepted Answer

75% pure gold, equivalent to 18 karats

Answer

750 grams of gold

Answer

750 parts per thousand silver

Answer

7.5 karat gold

Question 2

Which alloy is typically added to yellow gold to create 14k gold?

Accepted Answer

A mixture of copper, silver, and zinc

Answer

Pure platinum

Answer

Pure silver only

Answer

Palladium

Question 3

What gives rose gold its distinctive pinkish-red color?

Accepted Answer

A higher proportion of copper in the alloy

Answer

Added zinc

Answer

Higher iron content

Answer

Added chromium

Question 4

Which karat gold is considered 'pure' gold and contains no other metals?

Accepted Answer

24 karat

Answer

22 karat

Answer

18 karat

Answer

14 karat

Question 5

Why is 24k gold rarely used for everyday jewelry in the US despite being the purest?

Accepted Answer

It is too soft and malleable, making it prone to scratching and bending easily

Answer

It is too heavy

Answer

It cannot be set with gemstones

Answer

It is illegal to sell pure gold jewelry in the US

Question 6

What is the gold content of 10 karat gold, the minimum legal karat for jewelry sold as 'gold' in the US?

Accepted Answer

41.7%

Answer

58.3%

Answer

75%

Answer

91.7%