This individually documented natural Moonstone rough weighs an impressive 18.597 carats and is presented as transparent facet-quality material suitable for lapidary evaluation and potential faceting. The specimen shows a clear body appearance accompanied by a slight blue adularescence, giving the rough an attractive optical character even before cutting.
Measuring approximately 17.5 × 16.4 × 9.9 mm, this is a substantial natural specimen with sufficient width and depth to allow careful assessment of orientation, usable material and potential cutting yield.
The clear appearance of the rough is particularly important for faceting potential. Transparent Moonstone material with relatively limited internal obstruction can provide the cutter with greater freedom when selecting the final orientation, shape and facet design. The objective is to balance weight retention, transparency, internal characteristics and the position of the adularescent effect.
A defining feature of this specimen is its slight blue adularescence. This characteristic Moonstone phenomenon appears as a subtle bluish sheen produced by the interaction of light with fine internal feldspar structures. Its visibility can change according to viewing angle, illumination and crystal orientation.
Careful orientation is especially important when faceting Moonstone. The position of the internal lamellar structure relative to the finished surface can strongly influence how effectively the adularescence remains visible after cutting. Natural inclusions, fissures and structural variations should therefore also be considered during planning.
This specimen is recorded as natural Orthoclase / Moonstone and is unheated and untreated, with no indications of heating or other treatment documented for the material. Its colour, internal structure and optical character are therefore presented in their naturally recorded state.
Moonstone belongs to the feldspar group and has a hardness of approximately 6 on the Mohs scale. Its characteristic optical appearance is associated with fine internal feldspar structures that scatter light and produce the floating sheen known as adularescence.
As natural rough material, this specimen may displ
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