Pearls
can be saltwater or freshwater. Most pearls sold today are "cultured,"
which means that they are formed around a shell "seed" that has
been inserted into the mollusk. Salt water pearls are generally formed
singly in an oyster, while freshwater pearls are formed from multiple seeds
in a mussel. Colored pearls may be natural, but many colored pearls, especially
freshwater, appear to be dyed--the prudent buyer should be aware of this
fact, and be sure to inquire as to the origin of color.

Alexandrite
is an extremely rare gemstone of the chrysoberyl species, which was first
discovered in the Ural Mountains of Russia in 1830, on the day that Prince
Alexander came of age. In daylight (or fluoscent light) it can appear almost
emerald green, but is more often blue green to yellowish green. Under incandescent
light, the finest gems appear red to purplish red, although most stones
appear in the pinkish brown to reddish brown range.
VALLEY JEWELERS Phone/Fax: 925-313-9335
516 CENTER AVENUE
MARTINEZ, CA 94553