This Oskund has a Ceylonite embedded within.
Some Oskund are more jittery than others -- those with wings tend to be more sturdy on their feet as the appendages lend them extra balance.
This Emetti has a Jacinth embedded within.
Despite new pop culture depicting them as able to glide with their ears, that is definitely not true.
This Skree has a Thomsonite embedded within.
The only defenses a Skree has against predators are its size -- which is a subpar defense -- and the claws on its feet. They're not strong, but the talons are sharp enough to warrant the need for stitches in most cases.
This Yali has an Aventurine embedded within.
No one knows exactly how Yali managed to get around with a gem for a head and face, but they're one of the top predators of the Underground, so something must be working for them.
This Chendaar has a Bayldonite embedded within.
In spite of the fur not keeping the creature warm, clothing and blankets made with Chendaar fur are some of the warmest and are able to keep wearers warm even in the coldest areas of the Underground.
This Emetti has a Heliodore embedded within.
Even though they do not glide, Emetti are capable of floating a small distance. This ability is mostly used when they're hunting, leaping from wall to wall or between stalactites and drifting mid-jump.