Natural Moonstone · 4.315 ct · Cushion · Custom Cut

This individually documented natural Moonstone weighs 4.315 carats and has been fashioned into a distinctive cushion-shaped custom mixed cut. The gemstone displays a clear to slightly white body appearance with a very subtle blue adularescence, producing a delicate bluish sheen that becomes visible under favourable lighting and changing viewing angles.

Measuring approximately 14.0 × 9.6 × 7.7 mm, this is a substantial transparent Moonstone with an individual cutting style. The upper portion has been fashioned as a mixed cut, while the lower facet arrangement incorporates a custom design intended to work with the natural transparency, internal structure and optical behaviour of the material.

Unlike the stronger adularescence typically emphasised in cabochon-cut Moonstone, this faceted specimen presents the phenomenon in a much more restrained form. Its very slight blue adularescence appears as a subtle floating blue reflection rather than an intense continuous sheen, allowing the transparency and geometric facet pattern to remain important elements of the stone’s appearance.

The gemstone has a clarity profile comparable to SI2, with natural internal characteristics visible within the transparent material. These inclusions and structural features are part of the natural formation of the feldspar and may interact with transmitted and reflected light as the gemstone is viewed from different directions.

Its cutting quality is assessed as Very Good, with Very Good symmetry supporting a balanced overall presentation. The polish ranges from Fair to Good, while the gemstone retains a Good vitreous to slightly opalescent lustre. The combination of faceting, transparency and subtle adularescence gives this specimen a distinctly different appearance from conventionally cut Moonstone.

From a gemmological perspective, Moonstone belongs to the feldspar group and is associated with a layered internal structure responsible for adularescence. Light interacting with microscopic structural layers within the gemstone produces the characteristic floating sheen for which Moonstone is known.

Faceting Moonstone requires material with sufficient transparency and structural quality to support a faceted design while still retaining the characteristic optical behaviour of the gemstone. This specimen combines substantial size, transparent material and an unusual custom cutting style with a delicate expression of blue adularescence.

As a natural gemstone, internal inclusions, lamellar structures, fine growth features and minor surface characteristics may occur. These natural features contribute to the individual character of the stone and may also influence the visibility and distribution of its adularescence.

With its 4.315 ct weight, transparent appearance, distinctive cushion custom cutting and very subtle blue adularescence, this natural Moonstone offers an unusual combination of feldspar optics and precision faceting for collectors, bespoke jewellery or an individual centre-stone design.