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is a royal or navy blue mineral used as an ornamental stone. It is a
member of the sodalite group and is a common component of lapis
lazuli. It is named after its sodium content. Very similar to lazurite
and lapis lazuli, sodalite is never quite the ultramarine blue of the
other two stone. It rarely contains pyrite, a common inclusion in
lapis and is often streaked with white.
is a wonderful new find
out of Mexico. It is made up of Chrysocolla and Cuprite, which makes for
a spectacular color combination of bright blue-green and red.
is the fossilized buildup of microbial mats that
form in limestone. Formed by trapping particles of microorganisms such
as bacteria and algae, these mats typically form above the sea floor.
Stromatolite includes the oldest known fossils, dating back some 3.5
billion years life to the earliest forms of life.
is a plagioclase feldspar which in appears
in different directions to have brilliant shimmering patches. This is
caused by tiny enclosed scales of red hematite parallel to the cleavage
plane which reflect light. Sunstone is not rare and is found in Norway,
Siberia, India and the United States. Sunstone is the state stone of Oregon
and is found there in Harney and Lakes Counties. This variety of sunstone
contains inclusions of copper crystals.
is a chatoyant
gemstone that is gold, reddish brown or blue. It has a silky luster and is
a member of the quartz family. Blue tiger eye is also known as Hawk eye.
is a mixture of tiger eye, red jasper and hematite.
has been used in jewelry since the time of the pharaohs in ancient Egypt.
Turquoise is most often shaped into a cabochon for use in jewelry. It is an
opaque stone often with a bright robinís egg blue color that indicates the
presence of copper. North American specimens often contain inclusions from
oxides that form during their creation. This matrix can include
sandstone, limonite, malachite,
chrysocolla, jasper or psilomelane. The veins in some stones interlock in
patterns to form
can be found in much of the western area of the U.S. which was once an
inland sea. The turritella was an ancient sea snail with a cone shaped
spiral shell. The tiny shells have been replaced by agate and
chalcedony. There are other similar fossil agates from this inland sea with
other species of marine snails. Healing Properties