Sapphire

Corundum

Image #:

GB10039

Origin:

Natural

United States

Treatment:

Heating (AGTA H)

Field of view \ Magnification:

~1.50 mm mm

Photography technique(s):

Light field illumination

This natural sapphire from Montana, US, shows color zoning. A heating process intensified this zoning pattern, causing the rutile needles to dissolve and diffuse into the sapphire host and form blue patches around the area.

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