It has no official state rock, stone or gemstone.
Pennsylvania has not chosen a state stone but it did choose a state fossil.
The state rock of Pennsylvania is the trilobite. Actually, the trilobite is the state FOSSIL of Pennsylvania. PA does not have a state rock or a state mineral yet, though suggestions have been made.
Pennsylvania has no official rock, stone, gemstone or mineral.
It has no official state rock, stone, mineral or gemstone.
It has no official state rock, stone, gem or mineral.
There is none for Pennsylvania is a state in the USA. There is no real set in stone religion.
It has no official rock, stone, gem or mineral.
The is no official rock, stone, gem or mineral for Pennsylvania.
keystone=================A different answerPennsylvania is known as known as the Keystone State, but that is due to its physical position in the middle of the 13 colonies as well as its key position in the political and socioeconomic development of the country. A keystone is not a kind of stone, but is a structural wedge placed at the top of an arch to hold the arch in place.That being said, the State of Pennsylvania has not selected an official rock, mineral or gem - so there is no state stone of Pennsylvania.
Pennsylvania is called "The Key Stone State" because during the time of the 13 colonies Pennsylvania brought the colonies together. Which brought the sates together if it wasn't for Pennsylvania the would be NO United States instead there would be 50 different countries.So just like in a bridge a key stone keeps the bridge from collapsing and bringsthe rocks together, Pennsylvania did the same for the colonies.
Philadelphia is in the state of Pennsylvania which is in the country of U.S.A.