Author

David Sanchez Page 5

A certified gemologist from an independent jewelry shop in Manhattan, Kansas, David Sanchez now reports on gem identification and mineral properties for Biology Insights. He still appraises stones a few mornings a week at a neighborhood bench, testing hardness and assessing treatments for private clients.

What Is Black Zirconium and How Is It Made?Chemistry
How Is Gold Refined? The Process Explained Chemistry
Do Lab Grown Diamonds Reflect a Rainbow?Physics
What Does an Assay Mean in Gold Purity Testing?Chemistry
Where to Find Platinum in Everyday Items Chemistry
What Is an HPHT Diamond? The Science Explained Chemistry
What Causes a Diamond to Turn Yellow?Chemistry
How Is Blue Goldstone Made? The Manufacturing Process Chemistry
Is There Nickel in Platinum Jewelry?Chemistry
Is Amphibolite Foliated or Nonfoliated?Earth & Space
Does Fake Gold Rust? The Truth About Tarnish Chemistry
How Much Gold Is in Gold Leaf?Chemistry
How Many Crystal Systems Are There?Chemistry
What Makes Diamonds Yellow? The Science Explained Chemistry
Where Do Diamonds Come From? From the Earth to the Stars Earth & Space
Can You Break a Diamond With Your Teeth?Dental
What Is the Texture of Sand and What Causes It?Earth & Space
Is Sterling Silver Softer Than Gold?Chemistry
How Is Purple Gold Made? The Alloying Process Explained Chemistry
How to Identify Taaffeite: Tests and Key Characteristics Earth & Space
What Is a Type IIa Diamond and Why Are They So Rare?Chemistry
How Dense Is a Diamond? The Science Explained Physics
How to Extract Gold From Rock: Methods and Processes Earth & Space
What Do Rocks Taste Like? The Science of Flavor and Safety Earth & Space
Are Synthetic Diamonds as Hard as Real Diamonds?Chemistry
Is Emerald Amorphous or Crystalline?Chemistry
How Pure Is 22 Karat Gold?Chemistry
How Rare Is a Red Diamond? The Science and Statistics Earth & Space
Does Silver Scratch Easily? And How to Prevent It Chemistry
Can Gold Be Recycled? The Process and Its Impact Chemistry