Glass-filled rubies

Glass-filled rubies

Glass filled rubies are rubies that are disfigured by fissures or surface cracks repaired using heat treatment with lead glass. 

The refractive index of corundum (rubies are corundums) and lead glass are very similar, allowing light to travel through the stone and improving the color and clarity.

As natural rubies are becoming increasingly rare, the market is full of these glass-filled rubies, and as long as this treatment is disclosed and the price is adjusted accordingly this treatment is totally legit.

In our experience, stability of these treated rubies has proven very good, and the results in terms of appearence are excellent!

Edu Manchado Safont

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