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25 Cards in this Set
- Front
- Back
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which type of gemstone synthesis produces emerald |
flux melt |
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what type of gem synthesis uses an autoclave |
hydro-thermal melt |
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what type of synthetic gemstone production creates cubic zirconia? |
skull melt |
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synthetic gem materials have |
The same chemical comp as there natural counterpart and physical properties very similar to there natural counterpart |
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which two methods of gemstone production utilizes crystallization from a melt? |
Czochralski and zone melting |
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The trade name of gilson, kashan and Ramaura refer to this type of synthetic gemstone production... |
flux melt |
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The coloring transition metal element that makes emerald green in flux melt is... |
chromium |
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In this type of synthetic production, the chemical powder is shaken from the top... |
Verneuil
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Which process creates Quartz |
hydrothermal melt |
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Synthetics may be detected by |
Strong fluorescence typical inclusions Bright,even color |
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Fraunhofer lines are visible as... |
Absorption bands in the visible spectrum |
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The amount of dispersion created by a prism is... |
Dependent upon the type of material, the optical density and the transparency |
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X-Ray spectography measures the absorption spectrum in... |
The x-ray Range |
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The two types of spectroscopes are... |
Diffraction and Prism
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Which type of spectroscope creates an unevenly spaced spectrum? |
Diffraction grating |
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Reflectance meters use this type of light |
Infra- red rays |
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An absorption spectrum is caused by... |
Selected light rays being absorbed when the light passes through a material & the interaction of the light & chemical comp of the material |
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A spectrophotometer measures?... |
The light rays that are reflected or absorbed by a material |
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When light is passed through a blue liquid the spectrum will be deficient in...? |
red |
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Which type of light source is utilized for viewing an absorption spectrum? |
Incandescent |
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An emission spectrum is caused by chemical elements in the material becoming .... |
Stimulated |
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The number of slits in a diffraction grating is between... |
15,000 to 30,000 |
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Prisms used in combination to produce a wide spectrum are made from... |
Crown glass and flint glass |
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Synthetic turquoise is composed of... |
A ceramic material with blue grains |
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This method of gemstone synthesis uses water- cooled tubes. |
Skull melt |
