[jonathaneunice]

Love this!

I've heard that desert sand is fundamentally smoother than beach or river sand. Would love to see some examples of non-beach sand side-by-side with these glorious samples.

[observationist]

https://sandatlas.org/desert-sand/

Ask and ye shall receive.

[amelius]

I would also like to see what happens if various types of sand are heated to various temperatures.