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