Recently, Zircon was in the news. Which of the following is correct about Zircon?
1
It is the oldest mineral known to exist on Earth and, as such, geologists say, it holds vital information about the formation of our planet and life.
2
It is only found in Earth's crust.
3
It is soft, chemically unstable, and highly prone to weathering.
4
Synthetic zircons can't be created in laboratories.