Bibliography of Lee Horowitz, Gemologist "Gemstones of Peru" GIA Alumni Association Washington DC Chapter Lecture-Presentation Mr Lee Horoiwtz is recognized worldwide as an authority on "Gemstones of Peru" After obtaining a series of degrees, including a Masters in Educationand an Advanced Graduate Degree Certficate, et el, from colleges in New Jersey and Pennsylvania, Mr Horowitz turned his attentions to the gem industry. He received a certrificate in Gemology from the International Gem Society in in 1986 and embarked on a number of business and consultant ventures in addition to lectures and presentations focused on gems and jewelry. Mr Horowitz began as an asscoiate with Cleavland Gem and Mineral Compnay in Ohio. He subsequently established with Marcel Ryzenberg the partnerhsip of Peru Blue Opal Ltd in Lima Peru, an enterp[rise which has become a leader in the mining, cutting, and sales of Peruvian gemstones. An additional partnership was formed by Mr Horowitz, Kingdom of Cambodia International Gemstone Co Ltd ( KCIG Co Ltd) which likewise became one of the largestcutting and heat treatment facilities in Phnom Penh Cambodia. He is also an associate and consultant to Dikra Gem of New York, NY and as well to NCE Enterprises/NCE Gems of Chicago IL. He also acts as a consulting gemologist and advisor on zambian, east african ( Tanzania and Kenyan) gemstones as well as Peruvian gemstone materials. Mr Horowitz also serves as a consulting gemologist for a number of mine owners and gemstone companies internationally and domestically.