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Mineral Hydrometer
Measures the specific gravity or density of minerals and gems to aid in their
identification. Unlike a mineral's color which can vary, specific gravity is one
of the most constant physical properties of a mineral. By measuring it and
then comparing the result to a table of minerals listing specific gravities, one
can substantially narrow down the possibilities. Our Hydrometer Kit
includes hydrometer, packing tube/hydrometer jar, metric weight set (10
milligrams to 50 grams), instruction manual, worksheets, mineral tables
describing 430 minerals sorted by specific gravity along with eight other
mineral properties including hardness, streak, color, and luster.GL-001-004 Mineral/Gem
Hydrometer $79.95
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