GIA Diamond Essentials - Assignment 1 Questions and Correct Answers, With Complete Verified Solution 2024.

GIA Diamond Essentials - Assignment 1 Questions and Correct Answers, With Complete Verified Solution 2024. chemical composition Types and relative quantities of a mineral's atoms structure The arrangement of atoms in a mineral chemical element Substance that contains only one type of atom What is the chemical composition of Diamond? Carbon with trace elements How is a diamond formed? High temperature and pressure What range beneath the Earth's surface may diamond form? 90-120 miles deep Graphite differs from diamond in... Structure Value Factors Factors that determine a gemstone's value based on a combination of features The Four Cs (definition) Set of value factors used to describe and classify diamonds The Four Cs (list) Clarity, Color, Cut, Carat Weight A diamond's value is based on... It's own unique combination of the Four Cs Clarity The relative absence of inclusions and blemishes Blemish Surface irregularities Inclusions Internal features or features that extend to the inside of a diamond Benefits of clarity characteristics 1. Help separate natural vs lab grown or imitation 2. Identify to individual stones 3. Provide info on how diamonds form Which typically has more impact on the value of a stone? Inclusions or Blemishes? Inclusions Flawless Top grade in GIA Clarity grading system. Diamond that does not have visible inclusions or blemishes when viewed under 10x magnification. With respect to Color, most diamonds used in jewelry are.... Nearly colorless with light yellow tints Colored Diamonds Diamonds in colors outside the Normal Color Range. Also called "Fancy" Lab Grown Man made material with the same structure, chemical composition and physical and optical properties as the natural gem material Lab grown diamonds Man-made material that contain carbon atoms arranged in the same way as a natural diamond Lab-Grown Industrial Diamonds Man-made material used as abrasives and cutting tools since the mid-1950s Simulants or imitations Materials that look like natural gems. May be natural or man-made. Also known as "substitute" Classic Diamond Simulants include... Glass, zircon, YAG, and GGG. Developed in the late 1960s Cubic Zirconia (Synthetic CZ) A common simulant for diamond used today synthetic moissanite A popular diamond simulant. Developed in late 1960s. Today it is sold as a gem. Federal Trade Commission (FTC) a federal agency established in 1914 to investigate and protect consumers from unfair business practices Trade Practice Rules for the Jewelry Industry Published by FTC in 1957. Dealt with many areas of gem and jewelry merchandising Guides for Jewelry, Precious Metals and Pewter Industries Guidelines for Jewelry and Precious Metals Industries by the FTC. Apply only to the US. Cut A value factor of The Four C's referring to the way in which a diamond has been cut. Judged by a GIA grading system from Excellent to Poor. Also includes grades for Polish and Symmetry Brightness White light reflections from the surface and inside of a diamond. Also known as "brilliance" Fire Flashes of color seen in a polished diamond Scintillation The flashes of light and the contrasting dark areas you see when the diamond, the light, or the observer moves. Three Major Parts of a Diamond Crown, Girdle, Pavillion Crown The part of a gem above the girdle Girdle