When the slab has a uniquely shaped opening caused by the method of infilling in the rough, I always try to incorporate it into the cabochon, especially when it will enhance the piece.
The plume agate pictured had a very interesting vug with a botryoidal inner surface. Finding these features when you are slabbing a particular rock is often an accidental occurrence, but it is a plus. I designed the cab so that the vug was positioned horizontally near the bottom and it ended up well suited for my cab.
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ROOSEVELT DAM AGATE: A Gem Loaded with History
The Roosevelt Dam agate is a very limited-occurrence lapidary material, uncovered during the excavation of the Theodore Roosevelt Dam in Arizona, hence the obvious name of Roosevelt Dam agate.
GEORGIUS AGRICOLA'S: DE RE METALLICA
465 Years Old and Still Relevant
Trisparkle 12 Design Marks New Approach
I want to thank Jim Perkins for his many years of providing outstanding faceting designs for the Rock & Gem readership.
Scientists Looking at a Possibly Undetected Volcano in Alaska
Is there a previously undiscovered volcano within Alaska’s Aleutian chain of islands? A team of scientists recently presented their findings surrounding this possibility during a meeting of the American Geophysical Union (AGU).
COMMON, BUT NOT CONVENTIONAL
Discovering the Splendor of SLAG
A pile of slag remaining from copper smelting operations of 1930s Cottonwood, Arizona is one area of focus for Minerals Research, Inc. (MRI), the company pursuing a 15-20 year process to remove the pile using innovative recovery technology.
HUNTING FOR THUNDEREGGS
Uncovering A “Ghost” Volcano’s Treasures
GALENA’S GIFT OF A STUNNING SECONDARY MINERAL
Anxiously Awaiting a New Museum Opening
With the year 2021 upon us, Arizona collectors are certainly excited about the pending May opening of the University of Arizona Alfie Norville Gem & Mineral Museum in downtown Tucson. Of course, the excitement extends beyond the border of Arizona and to far reaching locales around the globe.
Captivated By Copper
Soldiers’ Discovery Leads to a Century of Mining at Pearl Handle Open Pit
Carrera models encasing the manufacture Calibre Heuer 02 have been available since 2018, but the series lacked a classic version with a closed dial. Now TAG Heuer has closed that gap in the line in an attractive way.
Vissles–W 3–in–1 wireless charger
A neat way to power up
STOP SUCKING AND JUST BREATHE
Air-saving tips and strategies to make every tank last
TIPS FOR FLOWER PHOTOGRAPHY
Flowers bring a sense of freshness into our lives. Here are a few tips, which, when followed, can improve your flower photography.
The column wherein all your questions relating to the technical aspects of hot rodding can be answered by our technical consultant, Ted Robinette. write to: p.o. box 232, Castlemaine 3450. email: email@example.com
Through the introduction of the Lantana herringbone leaf miner, the biocontrol of this weed has significantly improved.
TOOLHOLDING SYSTEMS - POLYGONAL CLAMPING TECHNOLOGY NOW ALSO FOR DRIVEN TOOLS
WITH IMMEDIATE EFFECT, THE HIGH precision SCHUNK TRIBOS polygonal clamping technology will also be used for lathes and automatic revolving transfer machines with driven tools.
Enhancing Forging Dies' Durability with Plasma-Assisted Thermochemical Surface Engineering
Introduction Failures of forging dies are caused by very complex wear mechanisms at the surface of the die cavity subjected to severe abrasion, impact and thermal loads .
1990s ‘N' gauge Class 950
Work on the ‘N’ gauge Class 950 Track Recording Unit project, a conversion based on a standard Graham Farish Class 150/1 model, is concluded by finishing the model in 1990s condition.
Yearning for the delicious, fresh flavours of south-east Asian cuisine, Rose Prince makes venison fillet the extravagant star of this tataki dish