> Some 296 known minerals are thought to pre-date Earth itself, of which 97 are known only from meteorites, with the age of some individual mineral grains estimated at 7 billion years—which was billions of years before the origin of our Solar System.

> The oldest known minerals are tiny, durable zircon crystals that are almost 4.4 billion years old.

Isn’t the first quote saying the oldest minerals are 7+ billion years old and the second saying the oldest are 4.4 billion years old? Which is it?