What's the plural form of smaragdite? Here's the word you're looking for.
Answer
The noun smaragdite can be countable or uncountable.
In more general, commonly used, contexts, the plural form will also be smaragdite.
However, in more specific contexts, the plural form can also be smaragdites e.g. in reference to various types of smaragdites
or a collection of smaragdites.
Examples
With omphacite and smaragdite, garnet forms the peculiar rock called eclogite.