GIA COLORED STONE COMPREHENSIVE EXAM PREP QUESTIONS AND SOLUTIONS VERIFIED STUDY RESOURCE

GIA COLORED STONE COMPREHENSIVE
EXAM PREP QUESTIONS AND SOLUTIONS
VERIFIED STUDY RESOURCE

●● GEMOLOGY
Answer: The study of gems.


●● ORGANIC
Answer: Once living, or produced by a living organism (plant or
animal).


●● MINERALS
Answer: A natural, inorganic substance with a characteristic chemical
composition and usually characteristic structure.


●● INORGANIC
Answer: Composed of, or arising from, non-living matter.


●● CHEMICAL COMPOSITIONS
Answer: Kinds and relative quantities of atoms that make up a material.


●● DURABILITY

,Answer: A gemstone's ability to withstand wear, heat, and chemicals.


●● LUSTER
Answer: The appearance of a material's surface in reflected light.


●● TRANSPARENCY
Answer: Degree to which a material allows light to pass through it.


●● HARDNESS
Answer: How well a gemstone resists scratches and abrasion.


●● TOUGHNESS
Answer: How well a gemstone resists breaking, chipping, and cracking.


●● STABILITY
Answer: How well a gemstone resists the effects of light, heat, and
chemicals.


●● CRYSTAL STRUCTURE
Answer: Regular, repeating internal arrangement of atoms in a material.


●● CHEMICAL FORMULA

, Answer: Written description of a material's chemical makeup.


●● TRACE ELEMENTS
Answer: Atoms in a gem that aren't part of its essential chemical
composition.


●● AMORPHOUS
Answer: Lacking a regular crystal structure.


●● SPECIES
Answer: A broad gem category based on chemical composition and
crystal structure.


●● VARIETY
Answer: A subcategory of species based on color, transparency, or
phenomenon.


●● PHENOMENON
Answer: An unusual optical effect displayed by a gem.


●● GROUPS
Answer: A family of gems from several closely related mineral species.