This has been eating at me for years now, but I need to know. I've noticed playing my copy of Platinum that it seems to favor giving me certain stones over others in the Underground. My Diamond did the same thing when it worked. I feel like which specific stones are more common is version dependent, so I'd like to test that theory. /vp/, if you still have your copy of a Sinnoh game lying around, can you post which version you're playing (If it's Platinum, also state if your trainer ID is odd or even), and list which are your two most common Kanto stones, and your most common Johto stone you find in the underground. I'll start:

Platinum (odd Trainer ID)
Fire Stone
Thunderstone
Sun Stone