re-tipped by a professional with another micro ridge (sapphire/boron)
Sapphire or Boron ?
Looks like it was not only re-tipped, but completely re-cantilevered - right ?
If the original cantilever was Boron and now you have Sapphire (or vice versa) this is not a re-tip. Someone refurbished your cartridge with different cantilever/stylus combo.