Angle Cut Cylinders 20# Gemological Instruments A direct-vision spectroscope designed for

A direct-vision spectroscope designed for quick gem testing and colour analysis in your bench toolkit

The procedures and techniques detailed in this book will help the diamond setter advance in his skills

ensuring accuracy and ease of use

This how-to book is written by Rubert Finegold and William Seitz

Angle Cut Cylinders 20# Gemological Instruments A direct-vision spectroscope designed forCeramilite The clean running light media that is between ceramic and plasticbonds. Metal removal is not quite as fast on bulk or dense materialsas ceramic, but measurably faster than plastic. Finishability is finerthan ceramic and brighter than the s