Crash Bandicoot 2: Cortex Strikes Back Easter eggs

Extra Item (101% or more!)
Go to Snow Go (Level 2) and Jump on the second to last bouncy pad for 4-5 minutes. It will be boring, but then after... Jump on the seal and press triangle to see what you get.

I've gotten The purple gem/Gems/Crystals by doing it.

Not sure if it works on NTSC.

Works on PAL.