XP gem

Red XP Gem

Dropped by enemies: walk over it for XP. Its colour tells how much it holds.

Gem tiers

Gem	XP value	Size
Blue XP Gem	under 2	0.8 studs
Green XP Gem	2 or more, under 10	0.8 studs
Red XP Gem	10 or more	1.12 studs

Picked up within 2.6 studs; flies to you from 9 studs (times Magnet).