This natural Opal rough weighs a substantial 52.58 ct and is offered as rough material for faceting and cutting. The specimen displays a warm orangey-yellow to honey-yellow body colour, combined with lighter milky-white opal zones and naturally contrasting brown matrix areas.
The material is translucent, with noticeable variation in light transmission across the rough. Some sections appear cleaner and more luminous, while other areas contain cloudy internal structure, darker inclusions and matrix-related features that will need to be considered during orientation and preforming.
The rough retains an irregular natural shape with uneven surfaces, contact areas and colour boundaries. Dark mineral inclusions and localized brown to orange-brown matrix are particularly visible along one side, while the opposite side shows broader pale yellow to whitish opal material with better light penetration.
For faceting, the strongest potential lies in the cleaner translucent yellow areas. Careful planning will be required to work around the darker inclusions, matrix zones and internal structural variations while preserving as much usable depth and colour as possible. Because of the substantial 52.58 ct starting weight, the specimen offers flexibility for orientation and may allow the cutter to select the most suitable section for recovery.
Opal is an amorphous hydrated silica material rather than a crystalline mineral. Its relatively low hardness and natural internal structure require careful cutting and polishing compared with harder gemstones.
This specimen is unheated and untreated, preserving its natural orangey-yellow colour, milky opal zones, inclusions and original rough structure.
With its large starting weight, warm honey-yellow colour and variable translucent character, this natural Opal offers interesting cutting potential for an experienced lapidary, with final yield and appearance depending strongly on orientation and removal of matrix-rich or included areas.
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