"This book contains everything the reader needs to know to facet gemstones expertly. Includes 22 beautiful cuts"--Amazon.com.

Amateur faceter Tom Herbst lays out the steps necessary to transform a shapeless lump of rock into a glittering jewel that is unique and valuable. Along the way

Rhizobia are bacteria which inhabit the roots of plants in the pea family and "fix" atmospheric nitrogen for plant growth. They are thus of enormous economic im