Stephen Hofer began his career in the earth sciences in 1976 as a geophysicist at the University of Connecticut. He studied gemology at the Gemological Institute of America (GIA) and the gemmological Association of Great Britain (GAGB), graduating with distinction.

In 1979 he accepted a position with the GIA Research Department, and since then he has devoted his career to the study of colored diamonds. In 1985 he became president of Colored Diamond Laboratory Services (CDLS), and currently operates a consulting service to the diamond industry.

He has lectured extensively on the subject of colour in diamonds, was one of sixty featured speakers at the 1981 International Gemological Symposium, has published numerous technical papers, and authored a quarterly column on coloured diamonds for New York Diamonds magazine. Mr. Hofer is an accomplished diamond cutter and a graduate of the American Institute of Diamond Cutting (AIDC).

"About this title" may belong to another edition of this title.

Store Description

We are dedicated to providing customers with easy, flawless transactions and excellent books! We provide 100% customer satisfaction and are always here to answer any questions or concerns for our customers.

Visit Seller's Storefront

Seller's business information

Farm For Books Inc
1734 Bellaire Street, Denver, CO, 80220, U.S.A.

Sale & Shipping Terms

Terms of Sale

Shipping Terms

Shipping rates within U.S.A.

Shipping rates within U.S.A.
Order quantity	7 to 12 business days	4 to 6 business days
First item	US$ 4.25	US$ 15.00

Delivery times are set by sellers and vary by carrier and location. Orders passing through Customs may face delays and buyers are responsible for any associated duties or fees. Sellers may contact you regarding additional charges to cover any increased costs to ship your items.