David Sanchez

Is It Crystal or Glass? How to Tell the Difference

Does Sterling Silver Turn Pink? And Why?

What Color Is Basalt and Why Does It Vary?

How to Identify a Garnet: Tests and Characteristics

Can a Hammer Break a Diamond? The Science Explained

How Much Pressure Is Needed to Make a Diamond?

Does Coal Become Diamonds? The Science Explained

Is Obsidian Mafic or Felsic? Its True Chemical Makeup

Do Rocks Absorb Water? The Science of Porosity

How Long Does It Take for Gold to Form Naturally?

Is Silver More Rare Than Gold?

How to Make 18K Gold: Alloy Composition & Process

Is Baltic Amber Real Amber? And How to Identify It

What Is Black Rhodium and How Is It Made?

Why Does Obsidian Contain Few or No Mineral Grains?

Where Does Gold Come From? From Space to Earth

How Hard Is Bone on the Mohs Scale?

How Strong Is Garnet? Hardness, Toughness, and Durability

How Subduction Leads to Volcanic Activity

Can Coal Turn Into Diamonds? The Science Explained