♑︎ The lucky stone of Capricorn: garnet
Colour: dark red. Also named: onyx, smoky quartz.
The garnet is dark red and firm, like the endurance of Capricorn. Tradition links it with being true to yourself and with the strength to reach a goal.
The lucky star of Capricorn in the real sky: Deneb Algedi.
The assignment of stones is tradition, and the lists differ. It is not medicine.