Britain’s Oldest Rock Art?
July 27, 2011 | BBC
With an estimated age of 14,000 years, a speared reindeer carving in Gower cave, United... Dimension Stone Market Recovering
April 20, 2011 | USGS
The market for dimension stone declined sharply during the recession as construction and prestige architecture... Concave Facets?
September 12, 2011 | Ultratec-Facet.com
Gemstones have been faceted for hundreds of years and up until about 20 years ago... Opals
March 31, 2011 | Geology.com
Gem quality opal is one of the most spectacular gemstones. A single stone can flash... | 
