Rhodonite necklace; photo by Narisa on Flickr (noncommercial use permitted with attribution / no derivative works).
Official State Gem of Massachusetts
Rhodonite was recognized by Massachusetts in 1979 as the official state gem or gem symbol. All State Gems
Rhodonite varies in hue from a light pink to a deep rose or reddish pink, and is considered the most beautiful gem material found in Massachusetts (rhodonite is associated with black manganese).