GIA Diamonds and Colored Stones Exam Package Deal With Verified Study Questions And Answers Rated A+

Gems derived from plants or animals are called _____________ gems. - Answer-organic _____________ threatens the existence of some of the species that jewelers, artisans, and craftspeople have used in the past to create jewelry. - Answer-extinction in _________, concern over many threatened or end...

Natural pearl formation starts when a __________ __________ gets inside a pearl-bearing mollusk's shell and irritates its soft tissue. - Answer-foreign object People have coveted __________ pearls as symbols of wealth and status for thousands of years. - Answer-natural Pearl culturing, plastic ...

Precious opal is made of billions of uniform submicroscopic _________ ___________, stacked in an orderly pattern. - Answer-silica spheres Play-of-color is produced by the interaction of _________ with opals internal structure of stacked silica spheres. - Answer-light _________ _________ commands...

Mineral category of nephrite. - Answer-amphibole Mineral Quality of jadeite - Answer-pyroxene What is the most prized color for nephrite carvings? - Answer-white Chinese artisans didn't use jadeite until it was imported from Myanmar in the... - Answer-1800's Fine quality nephrite from British ...

The word "___________," when used aloe typically refers to the blue variety of corundum. - Answersapphire Blue sapphire is one of the most ____________ colored stones, especially in the US. - Answer-popular The most highly valued blue sapphires are ___________ blue to _____________ blue, in ____...

The word "___________," when used aloe typically refers to the blue variety of corundum. - Answersapphire Blue sapphire is one of the most ____________ colored stones, especially in the US. - Answer-popular The most highly valued blue sapphires are ___________ blue to _____________ blue, in ___...

Clarity characteristics that affect these three things have the most influence on value. - Answertransparency, brilliance, durability Cutters often leave cavities in _______ __________ areas to avoid weight loss from expensive rough. - Answer-less noticeable Five factors that determine the influe...

a faceted transaprent yellow green OTL gem with noticeable fire and YELLOW FIBROUS INCLUSIONS - DEMANTOID GARNET (horse tail) the transparent intense dark bluish grenn variety of grossularite garnet is - TSAVORITE the most popular natural transaprent green gems are - peridot emerald and tourmalin...

Aggregate - a solid mass of individual, randomly oriented crystals, intergrown or held together by a natural binding agent Cleavage plane - plane parallel to a possible crystal face, where a diamond can split cleanly when struck covalent bond - a chemical bond formed by two atoms sharing electro...

A natural, inorganic substance with a characteristic chemical composition and usually characteristic structure. - Answer-Mineral A cutting style that combines brilliant-cut and step cut facets. - Answer-Mixed cut Tiny nicks and pits caused by wear and damage to a gem's facet edges or culet. - An...

Some diamond simulants display "see-through" because, compared to diamond, they A. display less fire. B. have lower hardness. C. can't be polished as well. D. have much larger critical angles. - Answer-have much larger critical angles. Which of the following is a natural gem? A. YAG B...

Annealing - gemstone heating process that can be used alone or to stabilize irradiated color Characteristic Color - basic color of fancy-colored diamond Depth of Color - Combo of tone and saturation that determines how noticeable the color is Fancy-Colored Diamonds - naturally colored yellow and ...

Differing amounts and combinations of the trace elements ______, ___________, and _____________ cause most fancy sapphire colors. - Answer-iron, titanium, chromium ________________ typically have the highest per-carat value of all fancy sapphires. - Answerpadparadschas Fine ________ sapphires reg...

Tanzanite was discovered in... - Answer-1967 Tanzanite is a transparent variety of... - Answer-zoisite All the gems in this chapter share the optical property of _______________________. - Answerpleochroism The first tanzanite was discovered in North Tanzania in __________. - Answer-Merelani Who...