Showcase
Blocks of Ruby and Sapphire power a Beacon.
Alt Jukebox Recipe
Craft a Jukebox with a Ruby or a Sapphire and save your precious Diamonds for (potentially) more important things, like an Enchanting Table... or a Firework, maybe?
Ruby and Sapphire tools
Shiny!
Another look at the Beacon pyramid
Engulfed in Flame
Try using the heat of fire to increase the speed at which you mine with a Ruby Pickaxe
Into the Mine
(You wouldn't find Rubies or Sapphires in a Plains biome like this) Traditionally, Rubies will spawn in "hot" biomes and Sapphires will spawn in "ocean" biomes, but you can Configure them to spawn in all of the biome types if you want
Submerged in Water
Try digging with your head underwater while using a Sapphire tool. You'll find that you break blocks a bit less slow than usual
Ruby and Sapphire Display
