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Sapphire
Gemstone Education | Unheated and Untreated Sapphire Information
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What does "heated sapphire" mean?
Virtually all the sapphires stones and jewelry in the
market place, have been subjected to treatments. Regular heat treatment is the
oldest and most prevalent enhancement in the sapphire, performed to improve on color and clarity.
 It is usually performed at 1,600 degrees Celsius
in man-made furnaces. However, nowadays, chemical
additives in the forms of molten glass and coloring agents are added to the heating furnace,
first to conceal natural cracks and fissures and then to altering completely the
stones' original color.
What does "unheated,
untreated, no heat sapphire" mean?
A completely
natural, unheated, untreated, no heat sapphire is the pristine form of the
mineral, as
coming out from the ground, with only cut and polish applied. Unheated sapphires
are therefore rarer, more valuable and definitely more beautiful. They are what
mother nature intended them to be.
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