2.83 Ct. Cabochon Fire Opal from Mexico

This semi transparent 2.83 carat oval bi color opal measures 11.01 x 9.01 x 5.12 mm, and presents as a classic cabochon cut with an evenly domed profile and an excellent polish. The body color reads as a warm orange to apricot field, and the stone exhibits intense overall color intensity. Opal type Fire Opal. Origin Mexico. Enhancement no enhancement. The proportions and finish are calibrated to present the internal phenomena with clarity while maintaining a comfortable size for a range of ring and pendant settings. The Natural Gemstone Company offers this specimen as a natural, untreated example of Mexican fire opal, with the cut and surface refinement chosen to highlight the inherent optical character of the material.

The unmistakable signature of this gem is defined by its internal inclusions, which manifest as bright, discrete patches of play of color set against the semi transparent orange body. These inclusions appear as a mix of pinfire and larger flash plate patches, producing concentrated areas of vivid yellow and green that contrast with the surrounding orange field. In some orientations the patches align to form a mosaic like pattern, and in other orientations they resolve into flame like streaks and rounded parches. The optical effect is produced by the regular arrangement of microscopic silica spheres within the opal, and in this specimen the sphere spacing yields a dominant yellow green diffraction that sits on an intense fire opal background. The inclusions are stable and internal, they do not indicate filling or dye, and they remain apparent under both diffuse and directional lighting, providing a dynamic signature that is readily verified by hand inspection.

The location and character of the inclusions influence how the gem is best set and viewed. With the cabochon cut the dome controls how the internal patches transmit light, so the most dramatic display occurs when the stone is viewed under moderate to strong daylight or warm artificial light, and when the dome is presented face up to the observer. The broader, plate like flashes are most visible across the table, while the pinfire elements add scintillation at oblique angles. For jewelry design this means the opal rewards open bezel and low profile prong settings that allow light to enter from above and from the sides, and that avoid heavy metal coverage of the table area. The gem responds well to a simple setting that frames the stone and allows movement, so that the inclusions animate as the wearer moves. The excellent polish enhances the visual depth of the inclusions, and the cabochon proportions are balanced to preserve both color intensity and surface durability.

From a practical standpoint the specimen requires routine care consistent with natural opal. The material is hydrated silica, so sudden thermal shock and harsh chemical exposure should be avoided, and routine cleaning with warm water and a soft cloth is recommended. Because there is no enhancement, the stone retains its natural internal structure and optical behavior, which collectors and designers often prefer for long term stability and authenticity. The combination of a warm orange body color, intense internal yellow green flashes, and a finely executed cabochon cut produces a distinct and recognizable signature that distinguishes this fire opal from more uniformly colored examples. The Natural Gemstone Company documents the origin and treatment status of the gem, and presents it as a refined specimen suitable for bespoke jewelry or for a collection that emphasizes natural optical phenomena and clear provenance.