Big Sur Neumorphic Icons Recreated In Figma

At first I thought I would need 3D software to fully achieve the 3D effect of icons, but then decided to try Figma first. As a result, I was able to carefully reproduced some of the Big Sur icons. I now understand how the new design language works and how this neumorphic glass-over-matter effect is achieved. The only icon I truly don't know how to reproduce without plugins is a Preview app as it contains glass that distorts its background.

https://www.figma.com/file/qlBcZeFsiGoDaYsBAVTZw5/Big-Sur-icons?node-id=13%3A79