Pay in 4 interest-free payments of $12.00 Learn more
Ships within 48 hours · Estimated delivery Sep 4 - Sep 9
riveting read
a Certified Eating Disorders Therapist and former compulsive eater
most accurate information and many new graphics and photos
Revised and Expanded Edition gives you the facts so you can get better
The Spectroscope and Gemmology Format:Hardcover riveting readThe first book devoted exclusively to the spectroscope and its use in gemstone identification. Until 1933 the refractometer and the microscope were the two principal tools in gem testing. Then B. W. Anderson introduced the hand spectroscope which quickly became the third vital instrument for the UK gemmologist. The publication of Anderson's papers in the mid 1950s alerted gem laboratories worldwide to the importance of this instrument. Today its use
US$ 19.99
US$ 19.99
US$ 19.99
