hallmark
🇺🇸
/ˈhɔːlmɑːrk/
🇬🇧
/ˈhɔːlmɑːk/
A characteristic that is a sign of something's quality or identity.
The lack of honesty is a hallmark of his character.
An official stamp on items made of precious metals to show their purity and origin.
This ring has a hallmark to prove its authenticity.
To officially stamp metal items to show their purity and origin.
The silversmith hallmarked the new piece before it was sold.