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Alexandrite

Tsarstone collectors guide

Home / Chapters / Glossary / Volcanic glass /

Volcanic glass

Volcanic glass: A solid volcanic natural form of glass (rock) produced by sudden cooling and solidification of viscous lava before crystallization can take place, such as obsidian, pitchstone or other glassy masses. Obsidian is used for tumbled gems, ornamental objects, beads and cut cabochon, some pieces have been faceted.

Vacuum fluorescence display: Vacuum fluorescence display; m.alexandrite.net/chapters/glossary/vacuum-fluorescence-display.html
Vanadium: Vanadium; m.alexandrite.net/chapters/glossary/vanadium.html
Volcanic rock: Volcanic rock; m.alexandrite.net/chapters/glossary/volcanic-rock.html
V-shaped inclusions in corundum: V-shaped inclusions in corundum; m.alexandrite.net/chapters/glossary/v-shaped-inclusions-in-corundum.html

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