What is the chemical formula for emerald?
The mineral beryl carries the chemical formula Be3Al2(SiO3)6. Emerald is simply a green variety of this same mineral.
Questions about Emerald
Short answers, pulled from the story.
How hard is an emerald on the Mohs scale?
The Mohs hardness scale rates emerald between 7.5 and 8. Most stones contain many internal flaws known as inclusions that result in generally poor toughness against breakage.
Where are the largest emerald deposits located today?
Colombia remains historically the world's largest producer today with three main areas driving output: Muzo, Coscuez, and Chivor. Zambia ranks as the second biggest producer globally.
When did mining begin at Mount Smaragdus in ancient Egypt?
Ancient Egypt mined emeralds at Mount Smaragdus since 1500 BC. Roman and Byzantine Empires exploited these sites on an industrial scale before mining ceased there after Colombian deposits were discovered.
Who developed the first commercially successful synthetic emerald process?
Carroll Chatham developed the first commercially successful synthesis process around 1964. Pierre Gilson Sr. began producing flux emeralds that same year while Linde Division of Union Carbide created fully synthetic versions from 1965 to 1970.