INVISIBLE SETTING AND METHODS FOR EFFECTING SAME

摘要

A mounting holds a grooved gemstone invisibly to a setting. One end of the mounting has arms or extensions, reinforced by struts, to receive the gemstone and protrusions extending inwardly from the arms to fit in the grooves of the gemstone, the mounting further comprising a retainer which is inserted into the setting, and then twisted to retain the mounting in place and may lever the arms to press harder into the groove. The mounting is adjustable. The retainer may be cylindrical, with a lengthwise split to make the deformation easier. As an alternative, the insertion may comprise planar members which are likewise inserted and then distorted. The mounting may have two or more gemstone compartments. Multiple coronets may be fitted on a molded base with reinforcements between the coronets.

主权项

1. A mounting for holding a grooved gemstone invisibly to a setting, the mounting having a first end with extensions to receive the gemstone, and protrusions extending inwardly from said extensions at a location weakened by a reduction in thickness in relation to predetermined wall thicknesses of said mounting, said protrusions to fit within respective mounting grooves of the grooved gemstone, the mounting further comprising a holding configuration for lockingly holding said mounting to said setting, an angle at which said protrusions extend from said mounting being variable by application of pressure across said weakened location.