Libyan Desert Glass - 12 Grams commercial-grade citrine is often amethyst

commercial-grade citrine is often amethyst that has been heated to extreme temperatures

or a long-time collector

The world believed Metasequoia glyptostroboides was an extinct species until its rediscovery in a secluded area of China in 1944

Unfortunately

A collision event that was estimated to have happened around 100 million years ago devastated the asteroid

Libyan Desert Glass - 12 Grams commercial-grade citrine is often amethystLibyan Desert Glass (LDG), is a tektite found in the Sahara deserts of Western Egypt, near the Libyan border. No one is positive about how this tektite has formed. Some research suggests the impact of a meteorite may have caused it. The heat and pressure from this impact would have melted the silica through radiation, similar to the thermal radiation present in a nuclear explosion. Another theory is the bursting of an asteroid as it passes through