Meaning of hardstone | Babel Free

Definitions

1. Precious stone or semi-precious stone used to make intaglio, mosaics etc.
   countable, uncountable
2. A surname.

Examples

“I was curious what it would take, so doing some calculations based on instamining hardstone, and comparing hardness, I've determined you need 45k mining speed to instamine mithril. 11.25k with mining speed boost. Is this achievable? Well, looking at the ways of increasing speed on the wiki: […]”

CEFR level