A diamond in the rough?

I googled how diamonds are formed and read this:

“Diamonds are formed under tremendous heat and pressure. Diamonds form deep below the earth's surface. According to science, the carbon that makes diamonds comes from the melting of pre-existing rocks in the Earth's upper mantle. Temperature changes in the upper mantle forces the carbon atoms to go deeper where it melts and finally becomes new rock, when the temperature reduces. If other conditions like pressure and chemistry is right then the carbon atoms in the melting crustal rock bond to build diamond crystals. During volcanic eruptions, diamond crystals eventually make their way to the earth's surface. The magma from the volcano rises along with the diamonds and deposits them on the surface where they are later found and mined.”

When you get engaged, you give your fiancé a diamond ring. Not a man made zirconium ring (fake diamond), but a beautiful diamond. Sweetheart, when you look back at our marriage, I know you see a zirconium. And most recently, you probably think that even that fake diamond was stolen. But I hope you can see that we’ve been going through tremendous heat and pressure. That it’s not going to happen overnight and may take a few more years. But underneath my surface, this surface of a broken, dirty sinner, there is a beautiful diamond waiting to be brought to the surface.

Our marriage has just had a volcano erupt. Mass destruction is happening and most people flee at this time. But sweetheart, I hope you can wait for what is to come, the same way a woman in love with her boyfriend waits with great anticipation for that diamond engagement ring. The next few years are going to be hard, but the way I see it, you have made it through most of the heat and pressure, the diamond is formed, it’s just taking this volcano eruption to bring it to the surface. Please don’t flee.

Here’s the rest of the article on diamonds:
“So you see that Mother Nature has to toil for millions of years to make a diamond. When you own a piece of diamond, you own something which is a legend in the making. It has not been made in a factory just the other day. A diamond comes from the bosom of the earth.”

-C