Step 3: Practical Gemology
Heavy liquids are chemical solutions with a high density. They can be used in specific gravity testing, but there are risks to consider first. Most heavy liquids are solvents, in the same family as thinners. Don’t inhale their vapors or get any on your skin or clothing. Heavy liquids are also flammable so keep them away from heat sources at all times.
Heavy liquids for specific gravity testing are sold in sets. The Gemological Institute of …
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