LOS ANGELES, California (AP) -- An online casino has a piece of Capt. Kirk.

Actor William Shatner has sold his kidney stone for $25,000, with the money going to Habitat for Humanity.

"This would be the first Habitat for Humanity house built out of stone," joked Darren Julien, president of Los Angeles-based Julien's Auctions, which handled the sale.

Shatner, who played Kirk on the original "Star Trek" TV show and won an Emmy for his role on "Boston Legal," passed the stone last fall.

The stone was so big, Shatner said, "you'd want to wear it on your finger."

"If you subjected it to extreme heat, it might turn out to be a diamond," he added.

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Awesome. And gross.

Shatner kidney stone goes for $25,000