sparkling gems?

[AestheticDeath]

What makes sparkling gems?

an old cracked leather belt pouch
a sparkling diamond
an uncut star-of-Tamzyrr diamond
a sparkling diamond
a sparkling emerald
a sparkling ruby
a dull white soulstone
a dull white soulstone
a dull white soulstone
a dull white soulstone
a sparkling sapphire
a sparkling pearl
a shard of dragonmist crystal

Pretty sure I have never found a sparkling gem from a creature.