Disclosing Enhancements: A Gemologist’s Guide


Step 3: Practical Gemology

Lesson 26

disclosing enhancements - tourmaline
Properly disclosing enhancements to gemstones can be challenging. Some common treatments leave no traces. For example, undetectable heat treatments can lighten blue and green tourmalines.

Disclosing enhancements is one of the most important responsibilities gemologists face. In fact, many countries are passing stricter laws about revealing gemstone treatments and origins. In the past, you could assume that professional gem buyers making volume purchases of sapphires, for example, would understand they’re probably heat treated. In today’s marketplace, you can’t take that for granted. If they tell their customers you sold them the stones without a notice of disclosure, you’re open to litigation.

Minimizing the Sales Impact Of Disclosing Enhancements

Gemologists in the business of selling gems need ways to declare gemstone enhancements without hurting sales. Try presenting the information as educational. (“Show off” your expertise). Or, …

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