Thread:VendettaVisionGuy/@comment-28905095-20170525090742

In general Mob Drops are considered renewable, as Mobs in general spawn willingly all over the place. The Guardian and the Elder Guardian, however, only spawn in or around an Ocean Monument, making them quite rare.

Related to the Desert Temples, another seldom structure, the Smooth Sandstone and Chiseled Sandstone, have been deemed non-renewable due to the scarcity of the structure. These are however not mob drops, but static resources.

These in combination with the (slightly unrelated) fact that Sand, deemed non-renewable, which spawns nearly all over a world, make me consider whether the scarce availability of the Prismarine Shards should be defined as non-renewable. (Triggering that also Primarine Bricks & co, should be non-renewable)

If we're going to stay strictly to the definition and keeping it as renewable, it would water out the usage of the non-reneweable/renewable category even more. 