Lesson 3: Specific Gravity Testing Part 3: Calculating Specific Gravity with an Electronic Scale

Step 3: Practical Gemology

Lesson 9

You can use an electronic scale for calculating specific gravity if you have the right accessory, a hanging basket for measuring the weight of gems in water. We’ll take you through the testing process step-by-step.

Step 1: The Equipment

Step 2: Measuring Dry Weight

Step 3. Measuring Weight in Water

Step 4: Calculating Specific Gravity

The formula for calculating the specific gravity of a gem is:

Calculating specific gravity - formula

You can purchase electronic scales for calculating specific gravity through Amazon or eBay.

The 5-Part Specific Gravity Testing Series

Definitions (Part 1)

Using a Balance Scale or a Hanneman Specific Gravity Scale (Part 2)

Calculating Specific Gravity With An Electronic Scale (Part 3)

Refining Your Specific Gravity Testing Techniques (Part 4)

Using Heavy Liquids (Part 5)

Every Gemstone Is Unique - Here's How The Experts Evaluate Them

in this training-course, discover the tools, tests & valuation process used by expert gemologists for colored gemstones, opals & diamonds

Course: Hands-On Gemology: Gemstone Identification Grading & Testing
Purchase Course: $79.00
Skill Level: Intermediate - Advanced
Lessons: 60
Time: 480 min