Patent ID: 9568237
Date: 2017-02-14
CPC Classifications: F25B,F25D,G01N

Claim:
1. An apparatus providing two stage cooling of a gemstone comprising: a first coolant container; a second coolant container positioned within the first coolant container; wherein the first coolant container includes walls formed of a thermally insulating material and an interior space which is capable of containing a first quantity of liquid phase coolant; and further wherein the second coolant container includes an interior surface that is light reflective with a “white” background or free of luminescence and capable of containing a second quantity of the liquid phase coolant, so that a first stage of cooling is provided to a gemstone positioned in the second coolant container when the first quantity of liquid phase coolant placed in the first coolant container, and a second stage of cooling is provided to the gemstone when the second quantity of liquid phase coolant placed in the second coolant container.