The most expensive element on Earth: $1 billion per gram!

Plutonium, the Most Dangerous Man Made Element

Price Comparison (Most Expensive Substance)

Lutetium - THE MOST EXPENSIVE RARE-EARTH METAL.

Every Radioactive Elements Explained in 12 Minutes

Comparison: Most Radioactive Things

This is a very heavy cube

Why This is the most Expensive thing in the Universe? | क्यों होता है Antimatter सबसे महँगा ?

Radium - The MOST RADIOACTIVE Metal ON EARTH!

Touching mercury

Cesium is scary

Most Expensive Materials On Earth

Top 5 Most Expensive Military Weapons

Incredibly rare and radioactive elements ☢

Gemstone show in hong kong Day 2 | worlds biggest gemstone show

This metal is more valuable than gold

Don't Crush Obsidian

Diamond is NOT the hardest substance... this is!

Why Did These Have Radioactive Material Added?

Most Expensive Metals , Only 1 Gram Of This Material Is Worth Billion Dollars