This crystal is so scarce that for every red beryl crystal found, there are about 150,000 diamonds. Its extreme rarity makes it estimated to be 1,000 times more valuable than gold.

Beryl’s crystal structure is more complicated than corundum’s because of the additional elements in the formula, ... The red light is reflected back, so that’s what you see in rubies.

Why are rubies red and emeralds green? ... The chromium replaces about 1% of the aluminum in the corundum or beryl crystal when a ruby or emerald forms underground at a high temperature and pressure.

Beryl’s crystal structure is more complicated than corundum’s because of the additional elements in the formula, but each aluminum ion is again surrounded by six oxygen ions. Pure corundum and ...

Beryl, a cyclosilicate mineral renowned for its aesthetic appeal and industrial significance, has been the focus of extensive mineralogical and spectroscopic investigations. Its crystal structure ...