PG Services sa, a well-known supplier of fancy colored diamonds, retains an impressive set of experienced gem experts to evaluate its stones and advise its clients. Stephen C. Hofer is among the companies notable diamond advisors. He ranks as a world-renowned scientific authority on diamond color measurement.

1. By PG Services

2. PG Services sa, a well-known supplier of fancy
colored diamonds, retains an impressive set of
experienced gem experts to evaluate its stones
and advise its clients. Stephen C. Hofer is
among the companies notable diamond
advisors. He ranks as a world-renowned
scientific authority on diamond color
measurement.

3. Mr. Hofer developed a new colored diamond
grading system that is now used by other
diamond experts throughout the world. He
also advanced the art and science of diamond
cutting to reveal optimum color and has served
as a trusted advisor to the owners of priceless
rough colored diamonds. Because of the
techniques perfected and shared by Mr. Hofer,
many diamond cutters now opt to prioritize
color when cutting stones, rather than size or
clarity.

4. The author of the 800-page manual Collecting
and Classifying Colored Diamonds, Mr. Hofer
has also published numerous other technical
reports. He travels extensively to present
colored diamond lectures sponsored by the
company.