Specific Gravity Testing Part 5: Using Heavy Liquids

Step 3: Practical Gemology

Lesson 11

using heavy liquids for SG testing - bromoform
Using heavy liquids is one way to test the specific gravity of gems. Bromoform is a heavy liquid commonly used in gemological testing. “Bromoform.” Public Domain.

Heavy liquids are chemical solutions with known high densities. Sets are sold for testing the specific gravity of gemstones. The Gemological Institute of America (GIA) offers a set with densities of 2.57, 2.62, 2.67, 3.05, and 3.32. Other manufacturers offer …

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