What is Steem Diamond?
Steem Diamond is a blogging platform. people earn
rewards 
DIAMOND when their blogs get upvoted by
other users of the Steem Diamond.
A simple example to understand the DIAMOND and Diamond Power
Think of Steem Diamond-Blockchain as a gold mine. Steemdiamond as a
tool to mine this gold. And users use this tool for mining.
The mine produces a fixed amount of gold every day. In the world of
Steemdiamond, we call this gold ‘Diamond Token’. The Diamond Token
(gold) is traded by the people in the market (online cryptocurrency
exchanges). They buy it on a speculative price and keep it (hold) with
them to sell later when the prices go up. Why the prices will ever go
up? Because the Steem has many use cases; it is useful and scarce.
The value of Diamond Token is exactly the amount at which people are
trading it in the market. The trust of the buyers and holders (the one
who own Diamond Token) gives it a price on the exchange.
DIAMOND POWER
DIAMOND POWER is a measurement of how much influence a user has in the
Steemdiamond network. The more Steem Diamond a user holds, the more
they can influence the value of posts and comments.
Influence tokens which give you more control over post payouts and
allow you to earn on curation rewards.