N F
amethyst; dark-colored precious stone

ADJ
of/belonging to hyacinth; hyacinth-colored/violet/blue/sapphire/purple

The following video provides you with the correct English pronunciation of the word "iacinthina", to help you become a better English speaker.

iacinthina, iacinthinae
n. f. amethyst; dark-colored precious stone; 

iacinthinus, iacinthina, iacinthinum
adj. of/belonging to hyacinth; hyacinth-colored/violet/blue/sapphire/purple;