With the introduction of the Market, we have a new mechanic to play around with: shards! They're currency you can earn by playing the game, and with it you can buy eggs in the Market.
Some people were wondering, how many shards do you get exactly for what action? And that's what this thread is for, to report new findings on shards, discuss them, and to have a list with all shard-related actions.
Getting an egg from the cave: +5 shards
Hatching an egg: +3 sh