inclusion

OBS: Les barbes, cavités, cristaux inclus, fêlures, nuages, plumes, lignes de croissance, etc. sont considérés comme des inclusions.

CONT: Inclusions, also called ""internal characteristics,"" for which polished diamonds are examined in clarity grading, include: cleavages, fractures, knots, bubbles, carbon spots, clouds, bezels, and bearded or feathered girdle.
CONT: Clarity is the degree to which a stone is free from external marks called blemishes and internal features called inclusions.