Shure V15VxMR moving magnet phonograph cartridge.  Standard
½ inch mount.  Micro-Ridge tip geometry, naked diamond, beryllium
stylus cantilever.  ¾ to 1½ grams tracking force.  This is the much
acclaimed top of the line cartridge from Shure.
View Shure's description.

  Shure has discontinued the V15VxMR, as of 11/17/2004, due
 to a shortage of "exotic materials."  We are sold out of this item but
 are hoping Shure will reconsider or at least ship some product