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Engagement
Ring Guru > Additional Articles - Series 1
The “Ice” on Diamonds
Diamonds are called "ice" for a very good reason.
Objects feel cold not only because they are at a lower temperature than
our bodies, but also because they can extract or conduct the heat away
from us. When you touch a diamond to your lips, it feels ice-cold because
it robs your lips of their heat. That is why sometimes, if you touch an
engagement ring in a certain way, it will feel cold.
The ability of diamond to conduct heat distinguishes it readily from other
gems and exceeds that of copper, an excellent thermal conductor, by about
4 times at room temperature.
This absolutely exceptional property of diamond is increasingly being used
for extracting heat from electronic devices to make them smaller and more
powerful.
Metals usually conduct heat much better than transparent substances,
because they have loose electrons that act as packets for carrying heat in
much the same way they move electricity. Non-metals conduct heat solely by
atomic vibrations, a less efficient mechanism than moving electrons. In
diamond, however, vibration energy travels through the crystal along the
strong internal chemical bonds. Thus, diamond's superlative strength
provides excellent thermal conduction as well. That is why engagement
rings sometimes feel cold to the touch!
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