David Sanchez

Can Gold Be Scratched? The Science Explained

How to Identify Topaz: Physical and Visual Tests

What Makes a Yellow Diamond Yellow?

Do Garnets Fluoresce? The Science of Luminescence

Can Labradorite Be Faked? How to Spot a Fake

How to Grow Synthetic Sapphire Crystals

How Old Are Diamonds? The Science of Their Ancient Age

How Much Nickel Is in 14k Gold?

Is Diamond Stronger Than Gold? A Scientific Comparison

How Are Diamonds Formed? From Deep Earth to Surface

Is Quartz Porous or Nonporous?

Is There Nickel in Gold? And Is It Safe?

What Is 10K Gold Mixed With?

Can Aragonite Go in Water? Its Effect on Water Chemistry

Can Lab Grown Diamonds Be Detected?

How to Grow Diamonds: HPHT and CVD Methods

What Are the Physical and Electrical Properties of Tourmaline?

Is Cubic Zirconia Lab Created?

What Physical Feature Distinguishes Biotite From Muscovite?

What Does a Diamond Feel Like to the Touch?