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Soldering Precious Metals

Soldering is one of the most useful techniques a metal smith can have. It is used both to create new pieces and to repair damaged jewelry.

What is Gemstone Luster?

Gemstone luster describes how a gem’s surface looks when it reflects light. Learn the common terms gemologists use for this property and what can…

Appraising Opals

Opals are unique gems with their own unique terminology. Learn the modern standard system for classifying and appraising opals used by major gem…

What is a Gem?

Even the most general definition of a gem has many exceptions. Learn what qualities have been used to identify gemstones both scientifically and…