Do you know two of the rarest stones in the world?

Discovered in the early 1970s, there is only one known deposit in the world, at the foot of Kilimanjaro. This deposit will soon be depleted.
Tanzanite has a rare secret: its trichroism. Its color changes depending on the light, in its natural state.

Long before the diamond, the ruby was the most coveted precious stone.
In ancient times, it was believed to have an inner flame that could never be extinguished.
Its most renowned deposits are located in Burma and Mozambique.
Rubies can be among the rarest and most precious gems in the world.