Author

David Sanchez Page 2

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.

Are Precious Metals Renewable or Nonrenewable?Earth & Space
How Much Is 18.7 Grams of Gold Worth by Karat?Chemistry
How Is the Price of Gold Determined?Physics
Are Copper Products Safe? Benefits and Risks Chemistry
What Does Gold PVD Mean? The Jewelry Coating Explained Chemistry
Is Granite Harmful to Your Health?Safety
How to Grow a Diamond in a Lab Chemistry
Is Blue Goldstone Man Made? The Manufacturing Process Chemistry
Why Is Gold More Expensive Than Silver?Chemistry
What Does a Green Diamond Look Like?Earth & Space
Are Diamonds Fragile? The Science of Their Durability Chemistry
How Far Can You Stretch an Ounce of Gold?Chemistry
What Are the Physical and Chemical Properties of Opal?Earth & Space
Do Lab Grown Diamonds Have Flaws?Chemistry
Does Emerald Have Cleavage or Fracture?Earth & Space
Is Obsidian Harder Than Diamond?Earth & Space
Is Diorite Aphanitic or Phaneritic?Earth & Space
What Can Make a Diamond More Susceptible to Chipping?Chemistry
Are Diamonds Rarer Than Gold? A Look at Supply and Rarity Earth & Space
How Is Zirconia Made? From Powder to Ceramic Chemistry
What Other Metals Are in 10K Gold?Chemistry
How to Tell If a Yellow Metal Is Real Gold Chemistry
Are Emeralds Stronger Than Diamonds?Physics
How Much Pressure Can a Diamond Withstand?Physics
Are We Running Out of Gold?Earth & Space
Are Lab Grown Diamonds More Environmentally Friendly?Environment
How to Make Amethyst More Purple Earth & Space
What Does Raw White Gold Look Like?Chemistry
What Is Mixed With Gold to Make Jewellery?Chemistry
What Makes Black Diamonds Black?Earth & Space