Tree Agate, also known as Dendritic Agate or Moss Agate, is an opaque Chalcedony Quartz. Dendritic inclusions make it appear to have distinctive mossy or tree-like markings. The tree-like markings are called called dendrites, a name derived from "dendron", the Greek word for "tree". The ancient Greeks noted Tree Agate as a stone of abundance and would sow some into their fields to ensure a good and plentiful harvest.
Thanks for looking.
My ArtFire Store: http://www.artfire.com/users/lunarskiesMy Etsy Store: http://www.etsy.com/shop/LunarSkiesJewelry?ref=pr_shop
My Jewelry: http://www.lunarskies.com
My Sculpture: http://www.lunarskies.com/pages1/fineart.html
My Cabochons: http://www.gemalchemy.com
Creating The Hive Artisans Group: http://www.creatingthehive.com
Facebook Fan Page: http://www.facebook.com/Lunarskiesjewelry.quentin.eckman?sk=app_106171216118819