Rust

As the rain falls

Cities of Iron wither

Built upon weak supports

But secretly I steal into such thresholds

Quietly

Unhurriedly

I repair te damage

But it all takes time

Sometimes days

Weeks

Months

Years

Decades

It can take me along time

or a short one

But I am relentless

So slowly

I do my work

Reopening doors

And fixing towers

Once in awhile

I find a treasure

And I keep it

I shine it to such a brilliancy that even the sun is jealous

Sometimes I''m more than willing to share

And at others I'm not

But I can help you find your own treasures

There is one requirement though

Trust

How can I tinker and help

If you don't let me do so willingly?

Those who have

Greed

Or Envy

Of my services

Will never get them

So when I find your treasure

Keep it safe

And make it shine

Who knows who it might attract?

Can you guess what I am?

I

Am

Your

...