Colour-Change Zircon


This is an ongoing research  that I am doing in collabaration with the SSEF in Switzerland.


Heat Treatments -Research

my set up

Usambara Color -Change Tourmaline

Very unusual piece  of Watermelon Tourmaline with a core that shows the Usambara effect.

Black Star Beryl

Unusual Star Beryl From Mozambique with Ilmenite in skeletal crystals.

© 2014 by ​ Oliver Waldis

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