Question 1

What is a mark (weight)?

Accepted Answer

A mark is about 250 grams, used historically in Europe for precious metals. Varied by region: Cologne mark = 233g.

Question 2

How was the mark used for gold?

Accepted Answer

Gold and silver were priced per mark. The German Mark currency derived from the weight of silver in one mark.

Question 3

Is there a difference between mass and weight?

Accepted Answer

Yes! Mass (kg) is amount of matter, constant everywhere. Weight (newtons or pounds-force) is gravitational force on mass, varies by location.

Question 4

Why do jewelry and precious metals use different units?

Accepted Answer

Troy system (troy ounces, pennyweights) has been used for precious metals since the Middle Ages. 1 troy oz = 31.1g vs 1 regular oz = 28.35g.

mark to g Converter

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