A) Amethyst B) Sapphire C) Topaz D) Diamond
A) Amethyst B) Garnet C) Emerald D) Turquoise
A) Feldspar B) Corundum C) Quartz D) Beryl
A) Ruby B) Topaz C) Star Sapphire D) Emerald
A) Peridot B) Emerald C) Sapphire D) Opal
A) Copper impurities B) Titanium impurities C) Iron impurities D) Manganese impurities
A) Imperial Jade B) Jadeite Jade C) Nephrite Jade D) Black Jade
A) Copper B) Zinc C) Manganese D) Iron
A) Almandine B) Spessartite C) Rhodolite D) Demantoid
A) An art form focused on creating jewelry from gems. B) The science dealing with natural and artificial gemstone materials. C) A financial study related to the trading of gemstones. D) A branch of biology that studies gems.
A) Gemmological Association of Great Britain. B) GIA. C) American Gem Society. D) The National Association of Goldsmiths of Great Britain (NAG).
A) 1947. B) 1925. C) 1908. D) 1931.
A) GIA founder. B) Robert Shipley. C) Founder of American Gem Society. D) A member of NAG.
A) Need for jewelry appraisal services. B) The influx of newly developed 'cultured pearl' and advances in synthesis of rubies and sapphires. C) Development of the Mohs scale. D) Demand for diamond certification.
A) The size of the gemstone. B) Understanding its atomic structure and identifying its origin. C) The color intensity alone. D) The weight of the gemstone.
A) Only the color of the gemstone. B) The historical significance of the gemstone. C) The market demand for that type of gemstone. D) Factors like crystal structure, specific gravity, refractive index, and other optical properties.
A) Gemological microscopic study of the internal structure, showing natural fluid inclusions or partially melted exogenous crystals. B) The color intensity alone. C) The market value. D) The weight of the gemstone.
A) Microscope B) Stone cloth C) Penlight D) Color filter
A) Dichroscope B) Spectroscope C) Polariscope D) Refractometer
A) Refractive index measurement. B) Specific gravity testing. C) Spectroscopy analysis. D) The Verneuil process.
A) FTIR spectrometer B) Refractometer C) Polariscope D) Ultraviolet lamp
A) EDXRF spectrometer B) Refractometer C) Polariscope D) FTIR spectrometer
A) The Journal of Gemmology. B) IGR – Rivista Italiana di Gemmologia. C) Gems & Gemology. D) Gemology Frontier.
A) They lack any internal structures. B) They are amorphous like glass. C) They show small flaws where the crystalline orientation changes abruptly. D) They have curved striations.
A) Determine the age of the gemstone. B) Measure the size of the gemstone. C) Identify the weight of the gemstone. D) Understand the atomic structure and identify its origin.
A) They are identical in value. B) It will have definite internal and optical activity variance. C) Myanmar rubies are always larger. D) Thai rubies are more valuable.
A) Contact liquid for RI B) Dichroscope C) Penlight D) Optic figure sphere
A) To perform analysis and estimation on site, independent from infrastructure. B) To store gemstones safely during transport. C) To clean and polish gemstones. D) To display gemstones to potential buyers.
A) Spectroscope B) Refractometer C) Polariscope D) Raman spectrometer
A) The weight of the gemstone. B) The market demand for that type of gemstone. C) The irregular Mohs scale of mineral hardness. D) The color intensity of the gemstone.
A) Identifying treatments to gems, new synthetics, and other new materials. B) Finding enough raw gemstones. C) Maintaining traditional gem cutting techniques. D) Training enough gemologists.
A) Based on their crystal structure, specific gravity, refractive index, and other optical properties. B) According to their color alone. C) By the country of origin. D) By their market value.
A) Raman spectrometer B) Ultraviolet lamp C) Photoluminescence spectroscopy system D) EDXRF spectrometer
A) Dichroscope B) Spectroscope C) Polariscope D) Refractometer
A) A synthetic diamond. B) An ancient method of polishing pearls. C) A natural pearl found in oysters. D) A newly developed type of pearl that prompted the establishment of the first gemological laboratory in London.
A) 1.81 B) 4.00 C) 3.15–4.20 D) 5.6–5.9
A) They measure refractive index. B) They show bands indicating which element colors the gem. C) They determine the specific gravity. D) They identify curved striations.
A) Polariscope B) Spectroscope C) FTIR spectrometer D) Refractometer
A) The angle at which a gemstone shows its cleavage planes. B) The angle at which a gemstone fractures. C) The angle above which light is reflected back internally within a gem. D) The angle at which a gemstone absorbs the most light.
A) A type of gemstone treatment. B) An optical property used in categorizing gemstones. C) A scale for measuring gemstone hardness. D) A method of cutting gemstones.
A) Color, refractive index, optical character, specific gravity, and examination of internal characteristics under magnification. B) Market value and demand. C) The historical significance of the gemstone. D) The size and weight of the stone.
A) Refractometer B) Dichroscope C) Polariscope D) Spectroscope |