According to her measurements, between 4% and 0.4% of incident light is transmitted through milky quartz rocks, depending on the size of the rock.

Arizona 1-ton landmark vanishes from Prescott National Forest Described as “a beautiful black boulder with white quartz running through it,”, Arizona’s “Wizard Rock” has been stolen.

A beloved 1-ton boulder in one of Arizona's national forests has "magically" returned after visitors reported it missing last month. Wizard Rock, a black boulder with white quartz running through ...

The 1-ton “Wizard Rock” that seemingly evaporated into thin air has returned to the Arizona national forest where it was stolen, in what can only be assumed as an act of magic.

Quartz crystals produce electricity when they are deformed by mechanical stress, which may explain how enormous chunks of gold can form in inert rock By James Woodford 2 September 2024 ...

A landmark boulder known as “Wizard Rock” and weighing 1 ton mysteriously reappeared in an Arizona national forest after it was believed to have been stolen last month. The black rock was ...