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As the opal stone contains a high percentage of water, opal may
deteriorate in heat. moreover, it is a very beautiful gemstone, now it is
used as a lucky charm gemstone jewelry in certain countries.
There are numerous varieties of opal on some wholesale jewelry website,
each one attractive in its own way. According to the color characteristic
and the optical effect, the natural opal divides into the white opal, black
opal and the fire opal three types.
The white opal
It is long as the gem history, its basic colors have the achromatic color,

the white, the French grey, the buff color and the lilac and so on, after
pondering over the cambered surface gem, the surface of opal will
reappear the beautiful play of color. Take the bottom color as pure white,
play of color color brightness is best.
The black opal ( http://www.bjbead.com )
After the 20th century , opal was discovered by the Australian, only then
by the people are known. Its color is black, the deep green, dark blue, the
deep ash and brown and so on, take the black as best. The black European
amber surface reappears many color plays of color, under the blue black
background serves as contrast, appears especially dazzling.

The fire opal
The fire opal is the special variety in opal. It assumes translucent to entire
transparent, color for yellow and orange red. Because constitutes its
silicon dioxide pellet diameter to be too small, thus does not have the
play of color effect, belongs to the low-grade Cheap jewelry. It is the
only that can be faceted, as specimens are totally transparent.
About the opal Maintaining:
First ,It Must be placed in the shade preservation. Because the opal
includes the massive moisture contents, and it will expose too quick for a

long time when under the sun or the glare that will dehydrate the
dehiscence.
Second, when using the electric drier and so on electric appliances or
spray chemistry goods and so on perfume, should also better avoid
wearing the opal.
Third, some thin opal stone, may separate a half year to place in the water
period of time, for taking the maintenance.
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