1 E-1 2016 Press Release. 2  E-1 Cities, Counties, and the State Population Estimates with Annual Percent Changeâ January 1, 2015 and 2016.  Tables of January 2016 City Population Ranked by Size, Numeric, and Percent Change.
Prismarine Crystals are items added in 14w25a that can be obtained by defeating the Guardian mob. They are used to craft Sea Lanterns, along with Prismarine Shards. Sea Lanterns also drop them when broken.
Prismarine Shards are crafting ingredients dropped by Guardians and Elder Guardians. They are used to craft Dark Prismarine, Prismarine, Prismarine Bricks and Sea Lanterns. They have no other purpose.