METAL/WAX FORMULAS
Jewelers need to know how to determine how much gold is needed for a wax mold. Here are three methods for you.Information and tips on metal or wax formulas.
1 Minute Read
Related Articles
List of False or Misleading Gemstone Names
A list of False or Misleading Gemstone Names and its Actual Gemological Name. Gathered by the source "Gemstones of the...
Read More
Table of Refractive Indices and Double Refraction of Selected Gems
Refractive indices and double refraction (birefringence) help gemologists identify gems. The following table lists these values for selected gemstones.
Read More
Specific Gravity Values of Selected Gems
Measuring specific gravity helps gemologists identify gemstones. The following table lists the specific gravity values for a variety of gem...
Read More
Properties of Diamond Simulants
Diamond simulants, like cubic zirconia and moissanite, often appear in jewelry. See how the properties of real diamonds compare with...
Read More
Latest Articles
Identifying Synthetic Gems
Distinguishing between natural and synthetic gems is a critical skill for gemologists. Learn about gem making processes and the telltale...
Read More
Ten Big, Beautiful, and Affordable Engagement Ring Stones
Looking for a gem that will make a big impression on your finger, not your wallet? These ten gems make...
Read More
Rhodochrosite Value, Price, and Jewelry Information
Beautiful rose red to pink rhodochrosite crystals are popular with mineral collectors. Although very soft, opaque stones have been fashioned...
Read More
Ruby and Sapphire Survey: Where Do You Draw the Line?
Our survey asked for your input on the age-old question: where is the line between ruby and sapphire? The results...
Read More
Never Stop Learning
When you join the IGS community, you get trusted diamond & gemstone information when you need it.
Get Gemology Insights
Get started with the International Gem Society’s free guide to gemstone identification. Join our weekly newsletter & get a free copy of the Gem ID Checklist!