If the top of the opal.
Natural real opal stone.
Why do stones get treated.
In this case look at the side of the stone again and see if the join between the opal and the backing is perfectly flat i e.
Real natural opal has not been changed from its natural state except to be cut and polished into a gem stone.
The opal man carries many types of natural opal including australian black opal crystal opal white opal boulder opal and opal specimens.
Doublets are a little more difficult to identify as they often use a natural potch black colourless opal or ironstone the brown boulder opal host rock backing.
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If the seam between the backing layer and the opal is irregular it is most likely a real stone.
Opal can be colorless or colored.
The structure of natural opal.
This is because man made stones are flattened in the course of processing to remove such irregularities.
At gemselect our opal comes in a.
A genuine gemstone is real but it is treated in some way to enhance its cut or appearance.
Its colors can range from white yellow orange and red to green blue brown and black.
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Opal offers exceptional individuality within its three main classes.
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The line around the circumference is perfectly.
The stone itself can display a remarkable amount of colors and effects that have delighted its viewers and wearers since ancient times.
Natural opal is a variety of silica.
Doublets are more difficult to identify because they often incorporate quantities of colourless potch into the stone.
Gemselect s 100 natural opal is a great place to begin.
If the opal is a perfect circle or oval then you should have a licensed jeweler inspect it before you make the purchase.
Many times natural stones have discoloration cracks and or inclusions.
Precious opal fire opal and common opal.
Needless to say these are also referred to as enhanced or treated stones.
This stone usually contains between 5 and 10 water and is relatively soft its hardness rating is 5 5 6 0 on the mohs scale.