David Sanchez

How Are Lab-Grown Gems Made?

How Are Lab-Created Gemstones Made?

How Far Below the Earth’s Surface Are Most Diamonds Crystallized?

Are Real Diamonds Shiny? The Science of Sparkle

Does Platinum Tarnish? The Truth About Its Patina

Does 9ct Gold Tarnish? Why It Happens and How to Prevent It

How Are Man-Made Diamonds Made?

Is Cubic Zirconia a Natural Stone?

How Strong Is Zirconia? The Science Behind Its Strength

Can 14 Karat Gold Tarnish?

How to Tell the Difference Between Platinum and Silver

How to Identify Real Onyx: Tests and Visual Clues

What Is a Spreading Center and What Is Made at One?

What Is Chatoyancy? The Cat’s Eye Effect Explained

What Is the Hardness of Talc on the Mohs Scale?

Can Sand Be Compacted? The Science Explained

Why Is a Diamond So Hard? The Science Explained

Does Cubic Zirconia Have Nickel?

Does .925 Silver Tarnish? And How to Remove It

Is Gold Plated Jewelry Nickel Free?