Tumbled Onyx Appraisal

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Tumbled Black Obsidian or Onyx Stone

This item is a small, polished semi-precious gemstone, likely black obsidian, shungite, or black onyx, exhibiting a dark, monochromatic charcoal-to-black coloration. The specimen has an irregular, asymmetrical teardrop or rounded triangular shape, indicating it has undergone a mechanical tumbling process to smooth its natural edges. Its surface displays a waxy to vitreous luster with visible light reflections, suggesting a high degree of polish. Regarding physical condition, the stone appears relatively smooth, though there are subtle surface irregularities, microscopic pitting, and faint abrasions consistent with a natural geological origin or the tumbling process. There are no visible maker's marks, signatures, or engravings, which is typical for bulk-processed decorative stones. The material lacks transparency and appears opaque under the light conditions provided. The stone is resting on a textured, light-colored terrycloth towel, which highlights its dark tone and smooth texture. Such stones are commonly used in lapidary arts, holistic practices as 'worry stones,' or as decorative vase fillers. Its age is indeterminate as it is a natural mineral product, but the tumbling finish suggests modern commercial processing.

Estimated Value

$1.00 - $5.00

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