Connect with us

Gem Quiz

Gem Quiz: Without This Stone, You’d Be Standing on Shaky Ground

Me, and my cousins, make up much of the earth’s crust.

mm

Published

on

INSTORE plagioclase feldspar 1

I am the most common of the feldspar minerals, which, as you know, make up the bulk of the Earth’s crust. So without us, and me in particular, you’d be standing on pretty shaky ground. My name is derived from the Greek for “oblique fracture” (in reference to my two cleavage angles), and unlike my glassy cousins, the potassium feldspars, I am known for my high refractivity. Yes, light — and time — slow when they meet me.

Who am I?

Guess this gem for a chance to win a “Jewelry Geek” T-shirt. Be sure to include your full name and the name and address of your store. The contest winner will be selected from among correct answers to this question.

Chris Burslem is Group Managing Editor at SmartWork Media.

Advertisement

SPONSORED VIDEO

Wilkerson Testimonials

Wilkerson Helped This Jeweler to Navigate His Retirement Sale Despite a Pandemic

Hosting a going-out-of-business sale when the coronavirus pandemic hit wasn’t a part of Bob Smith’s game plan for his retirement. Smith, the owner of E.M. Smith Jewelers in Chillicothe, Ohio, says the governor closed the state mid-way through. But Smith chose Wilkerson, and Wilkerson handled it like a champ, says Smith. And when it was time for the state to reopen, the sale continued like nothing had ever happened. “I’d recommend Wilkerson,” he says. “They do business the way we do business.”

Promoted Headlines

Advertisement

Advertisement

Advertisement

Subscribe


BULLETINS

INSTORE helps you become a better jeweler
with the biggest daily news headlines and useful tips.
(Mailed 5x per week.)

Latest Comments

Most Popular