Can Hemorrhoids be painless?

I found a semi-hard lump on the rim of my anus. It is purplish in color and is under the skin. It does not appear to be a wart.

After researching hemorrhoids, it seems to have many of the same physical characteristics. It looks like a vericose vein, yet like I said it is not painful. There is no difficulty with bowel movements and there has been no blood in my stool or on the toilet paper.

Could this be the early stage of a hemorroid, or does this sound like something else?