Natural Moonstone · 3.209 ct · Pear Cabochon · Blue Adularescence

This natural Moonstone weighs 3.209 carats and has been fashioned into a polished pear-shaped cabochon, with both sides finished to reveal the gemstone’s internal structure and optical character.

Measuring approximately 11.8 × 7.8 × 4.7 mm, the stone displays a milky white to locally clearer body appearance accompanied by attractive blue adularescence. Depending on the viewing angle and direction of illumination, the optical effect shifts from softer pale blue areas to more concentrated vivid blue flashes beneath the surface.

The pear-shaped cabochon provides a distinctive outline while maintaining sufficient depth for the adularescent effect to develop visibly across the stone. In the supplied photographs, the blue sheen appears in concentrated zones rather than as a completely uniform surface effect, giving the gemstone a dynamic appearance as it is tilted.

Natural internal feldspar structures are clearly visible throughout the cabochon, including lamellar growth features, internal veils, cloudy zones and fissure-related characteristics. These features influence the distribution of the blue sheen and contribute to the individual appearance of the gemstone.

Adularescence is the characteristic optical phenomenon associated with Moonstone. It results from the interaction of light with extremely fine internal feldspar layers, producing the floating blue glow that appears to move beneath the polished surface rather than reflecting only from the exterior.

The gemstone has been polished on both sides, allowing the internal structure and adularescent effect to be viewed from multiple orientations. The cabochon form is particularly suited to Moonstone because it enhances the visibility and movement of this natural optical phenomenon.

No indications of heating or other treatment have been recorded for this gemstone. It is presented in its naturally documented state and is the exact natural Moonstone shown in the product photographs.

With its 3.209 ct weight, distinctive pear outline and clearly visible blue adularescence, this Moonstone offers a strong individual expression of feldspar’s characteristic optical behaviour. Its natural internal structure and shifting blue sheen make it particularly suitable for gemstone collecting, bespoke jewellery or a setting designed to keep the adularescent effect central to the finished piece.