A 38 mm round white and brown plume semi precious gemstone Graveyard Plume Agate designer cabochon by 5 mm thick.
This is beautiful semi precious gemstone Graveyard Point Plume Agate from near Graveyard Point in the Owyhee Mountains of far eastern Oregon, near the Idaho border.
The agate formed in the cracks in basalt. The veins of agate range from 1 inch to about 18 inches thick, and can be a few feet long to 30 feet in length!
These agate cabochons have white to yellow or brown plumes.
The black or metallic looking wisp are Marcasite.