That video is bogus and to assert that the ancient Greeks could not see Bue is simply proposterous.

It's also not true that Lapis Lazuli wasn't used much; it was actually used extensively in ancient Egypt in not only jewelry but also paint pigments used to cover tomb walls; and for that matter the Greeks and Romans used it as well. Want proof? Just take a look at the existing original murals from Pompeii.

Further, blue pigments were also extracted from sand along the beaches of the Red Sea. These were turned into the exquisite Roman blue glass that was so highly prized. So prized that it too was made into jewelry, primarily beads. A have a small string of them in my collection of
Roman antiquities.