are found in the United States - Colorado
The state of
Colorado has been linked with diamonds since 1875 when two unscrupulous
prospectors convinced the president of the Bank of California that
they had found a rich diamond field. Their claims were a hoax - they had
sprinkled the land themselves with gemstones! Kimberlite was then
discovered in the late 1960's at the Colorado-Wyoming state line area in
Larimer County, Colorado. In 1975 diamonds were recovered from unique
volcanic structures called diatremes (the upper portions of these
volcanic structures) which were located northwest of Fort Collins,
Colorado. It was an almost unbelievable coincidence that the diamond
deposit site was only 150 miles away from the prospectors hoax diamond
field! In 1996, the Kelsey Lake mine began mining on a commercial
scale and in 1997, the Kelsey Lake Mine produced a 28.18 carat yellow
diamond. The mine was closed in 1998 but there are some plans to
are found in the United States - Wyoming
pipes have been found in Wyoming, near the Colorado-Wyoming state line
area referred to as the Aultman, Ferris and Schaffer kimberlites.
Diamond Mine and the Ace Of Diamonds Mine - New York
Source of Diamonds
The Herkimer Diamond
Mines and the Ace Of Diamonds Mine are not underground mines but are strip mines
in the form a gravel pit. There are no diamonds! But faceted quartz
crystals with points at both ends are found in this area.
The source of the diamond is a fascinating subject. This page was designed
to clarify where they can be found around the world, in the United
States and the meaning of Kimberlite, Placer
Deposits and Alluvial deposits.
Diamonds are Forever...
An Impartial Guide to Diamonds