Gia colored stones 1 - Study guides, Revision notes & Summaries

GIA Colored Stones - Assignment 1

GIA COLORED STONES ASSIGNMENT 2 QUESTIONS AND CORRECT SOLUTIONS 100% rocks the raw materials of gemstone formation the continental crust most colored stones form in... gem formation geological conditions during mountain building are favorable for... slow cooling In igneous rocks, large crystals indicate quick cooling In igneous rocks, small crystals indicate

GIA Diamond Essentials assignment 1 Questions and Correct Answers, With Complete Verified Solution. 2024. diamond uniqueness only gem made of a single element (carbon); characteristic chemical composition and crystal structure make it a unique member of the mineral kingdom; formation under high temperature and pressure conditions (graphite is also carbon only but forms under a very different condition so it's very soft) value factors Features used to judge the quality and value of all gem...

GIA COLORED STONES ASSIGNMENT 3 QUESTIONS AND CORRECT SOLUTIONS 100% crystalline minerals what are classified into seven crystal systems, depending on the symmetry of their unit cells? exterior shape what part of a crystal often indicates its symmetry at an atomic level? rare What do you call gems that require rare chemical elements or unique geological conditions, or both, to form? twinning What can result form a change during crystal growth, or from cooling or pressure after the cr...

GIA COLORED STONES ASSIGNMENT 5 QUESTIONS AND CORRECT SOLUTIONS 100% natural, synthetic Knowing whether a gem is ____________ or _____________ is crucial when buying or selling colored stones. imitations What can be made of a variety of materials, including natural or synthetic versions of other gems? process The __________ used to produce a synthetic gem can determine its value. melt, solution Most synthetic gem crystals are produced by these two processes... solution process Are mel...

GIA COLORED STONES ASSIGNMENT 19 QUESTIONS AND CORRECT SOLUTIONS 100% silica spheres Precious opal is made of billions of uniform submicroscopic _________ ___________, stacked in an orderly pattern. light Play-of-color is produced by the interaction of _________ with opals internal structure of stacked silica spheres. black opal _________ _________ commands the highest prices of all opal types. white opal _________ ________ makes of the bulk of commercial-quality opal on the market. m...

GIA COLORED STONES ASSIGNMENT 15: EMERALDS QUESTIONS AND CORRECT SOLUTIONS 100% The most desirable emerald colors are _________ green to green, with strong to _________ saturation and __________ to medium-dark h, vivid, medium bluish, vivid, medium The trade considers emerald to have the finest _________ among colored stones. green Slight differences in hue, tone, and saturation can make a great difference in emerald __________ when other factors are equal. value emerald's color-causi...

GIA COLORED STONES ASSIGNMENT 11 QUESTIONS AND CORRECT SOLUTIONS 100% large gems ___________ ________ are ore rare than small ones, so they often cost much more per carat, even if they're of equivalent quality. weight Most colored stones are sold by _____________. carat weight, dimensions A gem's recorded ________ ________ and _____________ can help identify it later. Leveridge A _________________ gauge is one of a stone dealer's most useful and versatile tools. 0.10 The sizes of c...

GIA Diamond Essentials Questions and Correct Answers, Exam Prep 2024. chemical element consists of only one kind of atom mineral inorganic. most minerals are a combo of 2 or more elements diamonds form within 90-120 miles below earth's surface value factos features used to judge the quality and value of stones - a diamonds value is based on its combo of the Four C's inclusions clarity characteristic totally enclosed in a polished gemstone or extending into it from the surface. affe...