Hello opticraft, I have turned my inverse pyramid into a platform for an enormous Sand Castle that is being built entirely out of Smooth stone.
So far in the project, I have used over 9000+ Pieces of Cobble (no joke intended) / 4200+ Pieces of Glass / and am planning on using 5-10k Pieces of Smooth Sandstone. However, I am currently lacking in Sand/Sandstone so if you are willing to sell, Contact me while I am on. I will buy any and all that you have.
Here are some current pictures of the build - Sorry if they are really big, I'm bad at editing/uploading photos.
Ground View (Please ignore the tower next to it)
Top View (Entire Structure Wouldn't Load for me) - Inside will be a farm/More rooms