Well, I tried the old burn test. They say Tortoise should smell like burnt hair and plastic should smell like, well, burnt plastic.
I heated up a safety pin and stuck it to one of the smaller ones and it sizzled like bacon and smelled like plastic. Bummer. It was kinda hard to tell though since I was using matches instead of a lighter. So I figured I would make it obvious and hold the match on the pick.The pick went up like a roman candle! Ha! I'm no chemist ( but I did watch Bill Nye when I was younger) but in my professional opinion, the smaller ones are not real.
When I held the safety pin to the big triangle one, it didn't smoke at all and I couldn't smell anything. So,I held the match directly to it and it still didn't smoke. It just bubbled up into a black goo ( <---technical term), which they say is what should happen with Tortoise. The jury is still out on this one.
Anyways, I've suspended further research for now, before I burn the house down.