Beacon Block

Beacon (known as Beacon Block in SkyBlock) is a unobtainable block that gives potion effects while player is in a range of it. It can be placed and works on a Private Island.

Due to the new update, Beacons are once again obtainable through the Mithril collection.

Crafting
Beacons were never intended to be in the game. People were able to craft them using Nether Star items in the past, but it was patched in later versions, meaning there is a limited supply of Beacons in the game. Beacons still work after the patch as they did before.

Beacons are still auctionable, their average selling price is about 200k-250k Coins each.

Trivia

 * Unlike vanilla, Beacons are called "Beacon Blocks" in Hypixel SkyBlock.