The cable provided is OFC ( Oxygen Free Copper ). Same cable type except for different connectors.
It should be very cheap to acquire from the vendor. It's mostly OK for > 90% of listener.
Not stranded pure Copper.
Not solid Core Copper. Starting to be expensive.
Not Silver Plated. Cost a little bit more.
Not pure Silver. It's dam expensive.
Pure Copper/Solid Core Copper OR OCC is another upgraded level of money and listening for details ( More detail for lower bass region and control, More intermit Mid Vocal, Soundstage expansion, glittering in space for the upper treble region )
Pure Copper or OCC with 4 meter long cost maybe for about > $ 1500 Upward. ( Cardas Clear version )
Pure Silver with 6 feet long > $ 2300.
I usually don't use stock cable. Once you started that direction(upgrade), you don't want to go back to stock cable.