Specific Gravity Testing Part 2: Using a Balance Scale or a Hanneman Specific Gravity Scale


Step 3: Practical Gemology

Lesson 8

Balance scale - Hanneman Specific Gravity Scale
You can build or adapt a basic balance scale for testing the specific gravity of gemstones.

Using a balance scale for specific gravity testing is the technique recommended by the International Gem Society. You can adapt or create your own scale or purchase the Hanneman specific gravity scale from Amazon.

Adapting a Balance Scale

You can adapt almost any balance-type scale for specific gravity testing. All you need to do is find a way to submerge …

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