Precious stone testing apparatus

Abstract

A precious stone testing apparatus includes a hand held casing receiving a microprocessor therein, a testing head, and an indicating arrangement provided at the hand held casing and electrically linked with the microprocessor. The testing head includes a testing probe for contacting a tested object, a UV light source for UV light generation, and a thermal conduction unit electrically linked to the microprocessor for determining a thermal conductivity of the tested object through the testing probe, wherein the thermal conduction unit and the UV light source are independently operated for evaluating the tested object, The indicating arrangement includes a plurality of indicating lights to be activated in responsive to the corresponding thermal conductivity of the tested object so as to classify the tested object.

Dependencies are inferred from the claim text.