Is there such a thing as "pressed coral"?

I'm familiar with compressed coral, of no particular age, but the only pressed "coral" I know is glass or celluloid. A dealer I watch on Youtube looked at some cameos in an antique store that were tagged "compressed coral". One reason I strongly doubt it - the pieces he was looking at were the color of Mediterranean coral and... as if. George wrote the book, literally, on Treasurecraft pottery, and knows mid-century glass well too. Jewelry not always so much.

Look at about the 02:12 mark

 

The first one he calls "molded coral" & the second one "pressed coral". Think he's correct that they are artificial, but you are correct, glass or plastic. I have never, ever, encountered "pressed" or "molded" coral, just things that are coral colored. Visually they can be quite convincing.

These are all artificial:



Given that this guy thinks a mediocre 1950s/60s cameo is great work because of the hair...