While this specimen is a rider on that great ice sheet from Ontario, Canada region, I agree. Much like the gold, garnets and diamonds we find in Ohio claims, were also locked inside the rock before the Ice Age. Oh, yes a great find but the only one known in Ohio, yet. Indiana and Pennsylvania may also have a few specimens there as well, due to glacial flow. Indiana has a higher chance from the known range of the glaciers.
Good Luck on the hunt.