Indicant

The ability to suffer patiently, then, is indicant of spiritual maturity

Source: wiktionary

Yet in spite of the essential crudity of this advertising, it had very early developed the value of the trademark as an indicant of quality in the product to which it was attached.

Source: wiktionary

"A number of things—his gratuitous and obviously mendacious statement that he had just read of the murder; his wholly insincere homily on the sacredness of professional confidences; the cautious and Pecksniffian confession of his fatherly regard for the girl; his elaborate struggle to remember when he had last seen her—this particularly, I think, made me suspicious; and then, the psychopathic indicants of his physiognomy."

Source: wiktionary