Ian Diamond White Unicorn Maestro 90% Tungsten Darts. Features: 90% Tungsten Nickel Alloy, Engraved Unicorn hallmark of quality and player signature, Unicorn shafts, Maestro signature flights, Guaranteed Weight to within 0.1g.Ian Diamond White Unicorn Maestro 90% Tungsten Darts. Features: 90% Tungsten Nickel Alloy, Engraved Unicorn hallmark of quality and player signature, Unicorn shafts, Maestro signature flights, Guaranteed Weight to within 0.1g.