Tubulite is the last born on the Island, being just 8 years old.
He's still completing school (that will last aroun 100 years), comprehending gem history, geology, basic biology and botany, literature and what's known of human history and culture.
Tubulite doesn't work yet, because he's too young for that, and one day he will discover what's his destiny. For now, he's just the baby of the group.
He likes to follow people around and observe what they do, and sometimes complain because he's not being spoiled enough!