Scam : Red glass sell in the name of Mediterranean waters natural red coral

I wish to draw your attention to that man-made red glass that is offered under the guise of genuine red ox blood coral found in Mediterranean seas, but upon close inspection, reveals bubbles and pit instead of wavy parallel fibrous structures (which is the characteristic of Natural red coral).

Bubble pit is easily seen in imitation of red coral (glass)

Air bubbles &  pit are easily seen in imitation of red coral (glass)

Air bubbles &  pit are easily seen in imitation of red coral (glass)