Fossilized Gemstone Appraisal

Ammolite Cabochon Gemstone

This item is a polished gemstone cabochon, likely ammolite, exhibiting a striking play-of-color known as iridescence or 'fire'. The stone is a roughly tear-drop or shield shape, with a smooth, domed surface characteristic of a cabochon cut, designed to maximize the visible spectral colors. Its primary colors are intense blues and purples, which dominate the central and lower portions of the stone. Towards the upper, narrower tip, vibrant greens transition into subtle hints of yellow and possibly orange or red, though these warmer tones are less prominent. The iridescence appears to shift and change depending on the viewing angle, a hallmark of ammolite. The material itself appears opaque to translucent, with a high polish that reflects light vividly. There are no visible chips, cracks, or significant abrasions on the surface, indicating good overall condition and careful handling. The edges appear smooth and well-finished. Without further examination, exact dimensions are not possible, but it appears to be a medium-sized cabochon, suitable for jewelry such as a pendant or ring. The craftsmanship suggests a commercially cut and polished gemstone. It is difficult to ascertain its exact age, but ammolite has been commercially mined and used in jewelry for several decades, placing its potential age from contemporary to mid-20th century.