How to Test Gold Purity with a Scratch Test?

Answer The value of gold depends on two factors; how much the gold weighs and how pure it is. The science of measuring the purity of gold is assaying. Professional assayers typically use specialized labor... Read More »

Top Q&A For: How to Test Gold Purity with a Scratch Test

Can you test gold-leaf purity?

Yes, you can test the purity of gold leaf by dissolving a small portion in aqua regia--a three-to-one mixture of hydrochloric and nitric acids--the only mixture in which pure gold is soluble.Refere... Read More »

How to Test Water Purity?

In an age when bottled water is readily available, many people are wary of what comes from their kitchen faucet. Given that drinking tap water is far less expensive than regularly buying bottled wa... Read More »

How to Test for Gold or Silver?

Throughout history, gold and silver have been considered precious metals and one of their primary uses has been to make jewelry and decorative objects. For gold, 10 karat is the lowest purity (and ... Read More »

How Can I Test Rose Gold?

"Rose gold," which is sometimes referred to as pink or red gold, is one of several popular gold alloys used in making jewelry. In fact, there is no such thing as “pure” rose gold. Even the yell... Read More »