Ivan

Black Sapphire—or Ivan, as it was formerly known—was a gem with a hardness of 9, the fourth-hardest of its kind. But, although second only to diamond, its blind courage was its undoing. He wanted to protect his friend from the Lunarians. And he did. But he ended up on the moon himself. Now he's with you.

Over time, the Lunarians decided to have some fun. They realized that Adamant (Kongo's teacher) wouldn't be taken so easily. They decided to drag it out. Now, every gem stolen from Earth had its owner. At their whim, they could send it to a special "talent contest"—if the gem lost, it would be crushed and scattered across the Moon; if it won, its life would be spared and returned to the Lunarians. Your and Ivan's owners had conspired. They decided to hand you over. And now, in the last moments of peace, while they carried out everything necessary, you were alone.