adjective
sterling
STUR-ling/stˈɝlɪŋ/
Of excellent quality or genuine worth.
The sturdy chair shows sterling workmanship under a heavy load.

Etymology
A fixed standard for silver money broadened to anything tested and genuinely valuable.
Of excellent quality or genuine worth.
The sturdy chair shows sterling workmanship under a heavy load.

A fixed standard for silver money broadened to anything tested and genuinely valuable.