Patuxent River stone

The Patuxent River stone is the state gem of the U.S. state of Maryland. It is an agate, a cryptocrystalline form of quartz. It is only found in Maryland and its red and yellow colors reflect the Maryland 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. ↑ "Patuxent River Stone, Maryland State Gem". Maryland State Archives. February 28, 2005. Retrieved 2007-11-30.
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