Patent ID: 9285357
Filing Date: 2016-03-15
CPC Classification: G01N

Claim Text:
1. A gem tester for testing a gem under test, the gem tester comprising: an elongated body; a probe extending from the elongated body; a circuit portion located within the elongated body, the circuit portion being electrically coupled to the probe to measure electrical conductivity of the gem under test; the circuit portion configured to determine identified type and drive a color control signal in response thereto; a luminescent mounting extending from the elongated body proximate the probe and disposed communicatively with the circuit portion, the luminescent mounting providing a plurality of colors corresponding to the plurality of gem types, the luminescent mounting lighting one of the plurality of colors in response to receiving the color control signal; and a line-of-sight contour extending along the elongated body, including the luminescent mounting to the probe.