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Your search for "gemstone" returned 124 results
Rhodium: Earth's Rarest and Most Expensive Precious Metal
science.howstuffworks.com/rhodium.htm
Discovered in the early 1800s from a chunk of smuggled platinum ore, rhodium is the most valuable precious metal on the planet today, used mainly for keeping car emissions in check.
Who Keeps the Ring if the Engagement Ends in a Breakup?
people.howstuffworks.com/who-keeps-ring-if-engagement-ends.htm
As many as one in five engagements end before the couples ever marry. So who walks away with the engagement ring when nobody walks down the aisle?
Can You Answer These General Knowledge Questions in 5 Minutes?
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If you want to answer these general knowledge questions in under five minutes, you're going to have to get moving! Don't hesitate, and see how well you do. We're betting you'll surprise yourself and do it in even less time.
Metallurgy: The Study of Metals and Their Properties
science.howstuffworks.com/metallurgy.htm
Metallurgy involves studying how metals behave and using that understanding to manipulate and shape them into various forms.
Neptune: An Ice Giant With Diamond Rain
science.howstuffworks.com/46006-neptune-explained.htm
Neptune is the eighth planet from the sun and one of the coldest. Its supersonic winds are also the fastest in the solar system.
Should I put quartz countertops in my kitchen?
home.howstuffworks.com/home-improvement/construction/planning/quartz-countertops-in-kitchen.htm
Quartz countertops cost the same as granite countertops, but they come in an array of colors. Find out why people choose quartz countertops.
Platinum: What's So Special About the Shiny Metal?
science.howstuffworks.com/environmental/earth/geology/platinum.htm
This white-hot metal not only makes beautiful jewelry, it's coveted for industrial, medical and military purposes too.
How Smart Rings Work
electronics.howstuffworks.com/gadgets/other-gadgets/smart-rings.htm
Smart rings can give you a subtle nudge when you receive an important message. Learn how smart rings work.
Rock and Mineral Activities for Kids
lifestyle.howstuffworks.com/crafts/nature-crafts/rock-and-mineral-activities-for-kids.htm
Try these rock and mineral activities for kids and learn more about all sorts of rocks. Learn more about these rock and mineral activities for kids.
Can You Fill In the Blanks in These Verses From the Book of Proverbs?
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Can you separate popular Proverbs from poetic Psalms? Put your knowledge of this book of wisdom to the test and see just how wise you really are. We'll be your proverbial cheerleader!