Opposing qualities cannot both hold for one consonant within the same pair: a single letter cannot be hams and jahr simultaneously. However, one quality from each different contrast may combine with one or more non-opposing qualities.
ص has hams, rikhawah, istiʿla, itbaq, ismat, and safir.
ر has jahr, tawassut, istifal, infitah, idhlaq, inhiraf, and takrir.
ض has jahr, rikhawah, istiʿla, itbaq, ismat, and istitalah.
A letter is therefore not adequately identified by a single feature. Its complete pronunciation depends on its makhraj together with all its applicable inherent qualities.