Leached superabrasive elements and systems, methods and assemblies for processing superabrasive materials

A superabrasive element produced by a process comprising:

• producing a leached volume in a polycrystalline diamond table of the superabrasive element, the polycrystalline diamond table comprising a metallic material disposed in interstitial spaces defined within the polycrystalline diamond table, the producing the leached volume comprising:
• exposing at least a portion of the polycrystalline diamond table to a processing solution;
• exposing an electrode to the processing solution;
• applying a charge to the electrode to generate a voltage between the polycrystalline diamond table and the electrode via the processing solution;
• leaching the metallic material from a portion of the polycrystalline diamond table to a first depth relative to a superabrasive face of the superabrasive element;
• and
• leaching the metallic material from an external side region of the polycrystalline diamond table to a second depth relative to the superabrasive face of the superabrasive element, the second depth being greater than the first depth.