Coyamito Agate is mined less than 40 miles from the world famous Laguna Agate, in the state of Chihuahua in Northern Mexico.
It is found in multiple deposits on the Rancho Coyamito, hence the name. The ranch covers about 23,000 acres and there are at least seven separate deposits on the ranch.
The first commercial claim was filed in 1948 and the area was dug extensively. But in the 1960's the yield lessened and mining was no longer economically worth while.
In 1992, two Mexicans died trying to extricate agates with explosives. And the ranchers banned collectors from the property.
In 2003 a new mining project began in the Los Alamos area of the ranch, and lots of material was produced, but again most of it was low quality.
Since then the owner of the ranch has found good material and it is still occasionally being produced.
Coyamito Agate cabochons are known for their wonderful vibrant colors of reds, yellows, oranges, violets, and blues.
The Coyamito Agate deposit also produces more pseudomorphs and some of the finest sagenite inclusions than any other agate location.
It comes mostly in small nodules from 1 to 3 inches in size. All of these pretty gemstone cabochons are at least partly translucent!
This semiprecious stone material is about 38 million years old.
Agate is a member of the chalcedony family, or a microcrystalline quartz, and it has a hardness of about 7 on the Moh's scale. The name is derived from its occurrence at the Achates River in southwestern Sicily.
Metaphysical Properties of Coyamito Agate: In general Agates are said to be stabilizing and strengthening. They improve memory and increase energy.