Gem tester
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United States of America Patent
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Mar 15, 2016
Grant Date -
Jan 7, 2016
app pub date -
Sep 15, 2015
filing date -
Jun 21, 2010
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A gem tester for testing a gem under test and a kit including a horizontal recharging stand are disclosed. In one embodiment of the gem tester, an elongated body has a line-of-sight contour tapering from a bulbous end to a radially deviating frontal nose having a probe extending therefrom. Internal circuitry measures electrical and thermal conductivity of the gem under test in order to identify the type of gem under test and drive a color control signal in response thereto. A luminescent mounting extends about the contact to provide, in response to the control signal, a color indication of the identified gem type.
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