balas / ballas [ˈbæləs]
balas – n. – 1. a ruby spinel of a pale rose, red or orange; 2. any of a group of hard crystalline minerals of various colours consisting chiefly of oxides of magnesium and aluminum; 3. any substance of similar composition or properties
ballas – n. – a nearly spherical aggregate of diamond grains having a radial or granular structure and used as an industrial diamond because of the toughness that is due to the lack of through going cleavage planes