Rameswaram
The stones being sold are actually coral rocks, an official of the Gulf of Mannar Marine National Park says
RAM Sethu the mythical bridge which got embroiled in a controversy over the Sethusamudram Ship Channel Project is back in the news. This time for the trade of coral rocks considered to be a part of the holy structure.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/ram-sethu-rocks-sell-hot-cakes
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/new-indian-express-chennai
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/environment
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/sethusamudram-project
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/corals
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/gulf-mannar-marine-np