Patuxent River stone

Tumbled specimens of Patuxent River Stone
This stone has been cut in half to and illuminated from behind to show the internal structures
Patuxent River stone cut and Illuminated

The Patuxent River stone is the state gem of the U.S. state of Maryland. According to official state records, it is a form of agate;[1] however, it is in fact an iron-stained quartzite. Patuxent River stone is found only in Maryland, and its colors reflect the state flag.

The Patuxent River stone became the state gem effective October 1, 2004, through the passage of Chapter 272, Acts of 2004; Code State Government Article, sec. 13-319.[1]

References

  1. ^ a b "Patuxent River Stone, Maryland State Gem". Maryland State Archives. February 28, 2005. Retrieved November 30, 2007.
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