hydrostatic balance |
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| The hydrostatic balance is used to determine the specific gravity of a gemstone. Although it is a fairly simple apparatus to operate, it can be time-consuming. One must put the results into a calculation, something not all gemologists enjoy doing. A specific gravity reading is considered a primary test in gemology yet, due to the time this method can consume, it is often regarded as a method of last resort in a standard gemological setup. |
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