Jasper, a form of chalcedony, is an opaque, impure variety of silica, usually red, yellow, brown or green in color. Blue is rare. This mineral breaks with a smooth surface, and is used for ornamentation or as a gemstone. It can be highly polished and is used for vases, seals, and at one time for snuff boxes. When the colors are in stripes or bands, it is called striped or banded jasper. Jasper is known to have been a favorite gem in the ancient world; its name can be traced back in Hebrew, Assyrian, Persian, Greek and Latin. On Minoan Crete within present day Greece jasper was carved to produce seals circa 1800 BC based upon archaeological recoveries at the palace of Knossos.
JASPER - associated with relaxation, contentment, compassion, nurturing, consolation, tranquillity, completion, wholeness, healing and gentle endings. This stone is good for those who need more organizational abilities.
The Twelve Tribes of Israel In Exodus 28:17-21, specific gemstones were associated with the twelve tribes of Israel. People of Jewish heritage may wish to select their birthstones based on tribal names. Historians have complied several lists of which stone goes with each name. Jasper is associated with the tribe of Assher.