Nyx will reduce to a mirror like or multi-coloured lustre , as you'd expect from Double Helix.Though the rods start out as black as night Nyx will kiln strike through a steady fade of midnight blue,lapis,peacock,turquoise and sky blue. You can determine the colour through annealing and temperature in the kiln.
Nyx are sold in 114grm packs which is around 7-9 rods per bundle.