Image Number 2 for United States Patent #6348964.
A viewer for gemstones allowing a person to view the light performance of a gemstone having a 360-degree light unit positioned above a base where the stone is placed. The light unit is attached to an adjustable mounting bracket which allows the bracket and light unit to move vertically through use of a control mechanism. The base allows for secure and consistent placement of the gemstone, and positioning of a light control structure, preferably made from a reflective material, over the stone. The position of the stone is under the center of the light unit and light control structure. The light control structure has an aperture to allow the light from the light unit to enter.