The player can obtain the Sharpedonite by defeating Mega Sharpedo in Stage 600 found on Prasino Woods.
The Lucarionite was also available as a prize during the Mega Sharpedo Competitive Stage. This Competitive Stage ran on the Nintendo 3DS version from September 7 to 14, 2015; January 25 to February 2, 2016 and November 8 to 15, 2016. It ran on the Pokémon Shuffle Mobile from January 25 to February 2, 2016; and November 8 to 15, 2016.
The Sharpedonite enables the following Mega Evolution:
Adds one more Mega Sharpedo above the match. Actually converts the tiles directly above all other Mega Sharpedo into a Mega Sharpedo. This effect can replace any disruption in the tile above and counts as erasing the content of the tile for damage, but does not affect black-cloud disruptions. Does nothing if the above tile is empty.