What density is the 512x512 icon for an Android app?

I'm making a launcher icon in Inkscape, with my document size set to 512x512. I'm trying to adhere to Material Design standards which state that the Tinted Edge and Shaded Edge of the product icon should be 1dp.

Since I'm working with a 512x512 document, I made them 11px which would make them 1px when exported to 48x48 (MDPI launcher size), but, when exported to 512x512 for the web icon, the tinted/shaded edges are much larger than other app's icons.

Here's an example icon by me and also the Search app's icon side-by-side. What am I doing wrong? What density is the 512 icon? Is the shaded/tinted edge not actually 1dp?