Gemology Resources

JUNE 21, 2024

This detailed essay encompasses the diamond’s identification, color, clarity, cut, and carat weight—four critical factors known as the "Four Cs" or a colored gemstone's identification, treatment, or lack of treatment all of which can greatly influence a gemstone's value. This knowledge plays a crucial role in making informed decisions.

Appraiser/appraisal 98

Appraiser/appraisal Gemology Jewelry Identification 98

Penrose Appraisals

MARCH 14, 2024

Identification. In some cases, positive identification may require the opinion of a recognized expert who may or may not be the appraiser. Appraising is a professional endeavor that requires many skills - research, sleuthing, and market analysis, to name a few. So, how do they do that? What is it made of?

Appraiser/appraisal 98

Appraiser/appraisal Maker/Artist Equitable Distribution Identification 98

Advisory Council on Historic Preservation

FEBRUARY 20, 2017

Recommended Approach for Consultation on Recovery of Significant Information from Archeological Sites Dates, Addresses, and Contact Information Dates This guidance is effective on June 17, 1999. Data recovery and analysis should be accomplished in a thorough, efficient manner, using the most cost- effective techniques practicable.

Consultation 40

Consultation Research Condition Analysis 40

WCG

MARCH 20, 2024

Conserves Mount Vernon’s historic architectural fabric utilizing the latest scientific methods, coordinating as needed with outside consultants and contractors. Conducts and oversees proper sampling of materials for laboratory identification and/or analysis, and cohesively synthesizes findings in written form.

Material 52

Material Identification Research Scope of Work 52