Found this in Sandwich, MA on the beach. Anyone recognize?

[Mdwells0827]

I’ve searched beaches all along the south shire and never seen a rock like this. Anyone know what it is? It’s mint colored.

 

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[smokeythecat]

It could easily be beach tumbled common beryl. Beryl is very hard and it occurs is various spots all along the east coast, primarily near rocky areas.

 

[Theodocious]

Quartz. Some have inclusions like epidote that makes them appear slightly green.