Home Search
-谷歌云台湾机房【TG飛機∶@AK6793】華為雲VPS雲∶號碼認證】谷歌云台湾机房【官網∶AK7677.COM】華為雲綁卡∶優惠折扣】w7i - search results
If you're not happy with the results, please do another search
Studying Geode Splitting
By Jim Brace-Thompson
With geodes, it’s the surprise inside that counts! Most geodes are dull, lumpy and drab on the outside. But inside can be...
Examining Slumps
By Jim Brace-Thompson
A slump is in the category of what geologists call a “mass wasting event.” A block of semi-consolidated sediment or rock slides...
Dynamic Dig Discovery: Druzy Agate
SPECIMEN: Druzy agate
MEASUREMENT: 4 x 6 inches
LOCATION DISCOVERED: Vancouver Island, Nanaimo, British Columbia, Canada
ROCKHOUND: Sterling Gagnon
HOW LONG HAVE YOU BEEN A ROCKHOUND AND HOW...
Earth Science In the News: Depletion of Usable Sand?
By Jim Brace-Thompson
Alternative Energy Boom Fuels a Lithium Rush
We live in an era when alternatives to petroleum-based energy are being demanded and eagerly sought....
Suspenseful Discovery of Elements
By Bob Jones
Rock & Gem continues to celebrate the chemical elements since the United Nations declared 2019 the International Year of the Periodic Table...
6 Stand-Out Meteorite Specimens Coming to Auction
By Antoinette Rahn
If there is one word to sum up Heritage Auction’s upcoming Nature & Science Signature Auction, it would be "meteorite."
A meteorite, as...
What to Cut: Composite Material (Part II)
By Russ Kaniuth
In the May issue, I discussed making composite materials out of natural stone and epoxy, this month I’d like to venture further...
Enchanted by Selenite
By Antoinette Rahn
If you ask Paul Fabela to name some of the best days in his life, it’s a good bet that list includes...
Carrying on Cutting Traditions
By Bruce McKay
In a Western Germany valley between Frankfurt and Luxembourg is the town of Idar-Oberstein, the heart of the gemstone industry. Long past...
Earth Science In the News: T-Rex In the ‘Big Apple’
By Jim Brace-Thompson
The Tyrant King Comes to Life in New York City
Tyrannosaurus rex—the “tyrant king”—and it’s an ever-enlarging family of dinosaurian ancestors and relatives...
