Aquamarine mica

 It derives its name from the Roman term for “water of the sea” and was believed to be a treasure of the mermaids that would protect sailors during their journeys. Fine aquamarine specimens are primarily recovered from mines in Pakistan and Brazil. Although Brazil typically produces the highest quality aquamarine itself, specimens tend to be aesthetically limited due to the fact they are almost always single crystals that have detached from their matrices. This is a large aquamarine from the Nagar mine in Pakistan. It is grown upon a matrix of silvery, bladed muscovite and hearty albite crystals.