They are expensive due to their beauty, rarity (or perceived rarity), and cost to produce them Tight control of supply of precious stones (for example De Beers and diamonds) also increases the price artificially. Specifically they ensure they buy as many of the diamonds as they can and then slowly release them into the market to ensure the price stays high.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.