Patch notes say:
Players will no longer be able to trade Allagan tomestones of law for the following items:
Purified Coke / Raziqcoat / Dryad Sap / Moonbeam Silk / Odorless Animal Fat / Skyspring Water

The above items can now be obtained from the following dungeons:
Neverreap / The Fractal Continuum / Saint Mocianne's Arboretum / Pharos Sirius (Hard)
I've run 60 roulette and each of the four manually each day since 3.2 landed (and two today after the DoH/DoL hot fix) and have never seen them drop. Are they rare? Are they even there?