This clovis is made of english flint. It is 8 inches long 2 1/2 inches wide and I estimate it ranges from 3/8 to 1/2 inch thick.(did not measure it with fowler gauge). It is fluted on both sides, one is 3 inches and the other is 2 inches. The top picture shows the flute spalls. It was fluted by free hand percussion using the atlatl method.
If you are interested in purchasing this piece visit
http://pinterest.com/modernflintknapping/
Tried to get a picture where flute is easier to see with this one.