It's several times sharper than surgical steel and has an iridescent beauty that masks its use as a deadly tool. It's obsidian — a hard, dark volcanic glass used for thousands of years by American ...
Enid Gem and Mineral Society is hosting a program on the art of flint knapping at 7:30 p.m. today in the Hoover Building’s east room at Garfield County Fairgrounds. John Stahl, an experienced knapper, ...
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