The Ray Mine is located near Globe, Arizona and produced some of the best quality Gem Silica that has ever been found. The colors ranged from blue to blue-green and at times some parrot wing green could be found.  

 Another description for this cabochon could be Chrysocolla in clear quartz.  Although Chrysocolla will sometimes accumulate sufficient thickness to be cut as a gemstone, it more frequently merely stains chalcedony, producing an INTENSE blue material that is tough enough to cut.  The finest material is translucent and uniform in its bluish color. The hardness of Chrysocolla itself is only 2-4 on the Mohs scale, but the material frequently contains enough silica to become hard and take a high polish.

This material, with Sagenite included, is very challenging to the cutter and requires much patience because of the inevitable undercutting that occurs, due to crystal inclusions and graining on the surface of the material.  A certain amount of care should be taken by the jewelry designer while setting this stone.  It is very solid, but the fact that it is quartz may lead the designer to handle it with less care than it should perhaps have.