Okay I'll grant the real stone aspect, but what about the dotted arrows connecting the gems, that seem each to be associated with a continent? Like you have to arrange them in sequence or something.
That is supposed to indicate where the stones were found. In other words, the continent on which each stone is positioned is one of the places on the Earth where such stones can actually be found.
Could be to simply create a sense of movement, or to imply the action of collecting them.
That's what I'd say too. The ship and adventurer on the map make me think that the treasure (the stones) was accumulated throughout world travels. Each stone was collected by some Playmobil adventurer in a different place and put together.
Thankfully we collectors never overthink these things...
Of course not...
I always thought these Playmobil polished pebbles were quite disappointing - all earth tones and no real "gems" in the bunch.
Some of those could be considered gemstones. I know what you mean though, but I reckon it'd be quite expensive to include rare and valuable ones. And children would likely lose them anyway.