Natural Rubies Clarity Enhanced with Leaded Glass

Step 2: Advanced Gemology

Lesson 13

leaded glass enhanced ruby set
Leaded glass clarity enhanced rubies. Photo © Primagem. Used with permission.

Leaded Glass Filled Ruby UPDATE, December 2016

Prior to 2006, most lead glass filled rubies contained only a very, very small percentage of glass in surface reaching fractures. Due to this small percentage, these stones qualified for the designation “treated rubies” by internationally respected gem labs.

However, treaters improved their ability to enhance ever lower grade material. As …

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