Can Knights swim?

Yes. I have myself personally swum with mail hauberk on. It weighs some 10 kg, and does not limit the upper body mobility. I did rapid breaststroke, and was able to swim.

Is it possible to swim in a suit of armor?

It is basically impossible to swim in modern day armor that probably weighs about the same or less than medieval armor. Modern day armor is not anywhere near as cumbersome as that either.

How much does leather armor weigh?

An entire suit of field armor (that is, armor for battle) usually weighs between 45 and 55 lbs. (20 to 25 kg), with the helmet weighing between 4 and 8 lbs. (2 to 4 kg)—less than the full equipment of a fireman with oxygen gear, or what most modern soldiers have carried into battle since the nineteenth century.

Is leather stronger than steel?

The leather is embedded with Dyneema fiber, which is fifteen times stronger than steel, that was bonded to a high-grade bovine hide using a specially crafted process. The result is an ultra-strong material that still retains the look and feel of natural leather.

Is leather armor better than steel?

No. Steel armor is much less affected by time, temperature, moisture, and repeated blows. A good example is hardened leather helmets. The lacquer was used as an attempt to make the leather strong, but once the warrior in question could get good metal armor they did so and often for about the same weight.

What can destroy diamonds?

Steel and other rocks can be used to easily crush a diamond. Like I said earlier, super heating a diamond can set it on fire, and even throwing diamonds into your furnace will burn them all up.

Can Diamond Be Broken?

While diamonds triumph in hardness and stability, their toughness presents a vulnerability that, if the conditions are just right, can cause a diamond to break. Diamond are vulnerable to chipping, fracturing, or even breaking apart along their cleavage lines.