Aurelac

noun
A subterranean organism resembling a botanical rhizome, known to produce valuable pearl-like stones.
Origin
Derived from aureus (golden) and lac (milk).
Source
Prospect

Chiaroscurography

noun
The photographic process invented by Leonardo da Vinci.
Origin
Formed from chiaro (bright), scuro (dark), and gráphō (to draw).
Source
Bruno’s Shadow