Spinel

specimen number:
2063528

location:
Betroka, Anosy, Madagascar

description:
A large loose non-lustrous opaque black crystal of spinel. Sharply formed and naturally crystallized all around, very minimal micro-damage present. The specimen comes with a previous label from the collection of Ray DeMark.

Situated within the high-grade metamorphic terrain of southern Madagascar, the Betroka district in the Anosy region is renowned for its rich gem-bearing alluvial deposits and primary rock occurrences. Geological formations here consist largely of ancient marbles and high-grade metamorphic rocks subjected to intense regional heat and pressure, creating ideal conditions for gemstone crystallization. Artisanal miners have targeted these remote areas for decades, recovering spectacular gem-quality spinel crystals in vibrant shades of pink, red, purple, and blue from weathered matrix and stream gravels. The region remains a celebrated source for mineral collectors and gemologists seeking exceptional natural spinel specimens featuring high clarity and brilliant octahedral forms.

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