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: 925-313-9335
1175-D ARNOLD DRIVE
MARTINEZ, CA 94553