chrysoberyl
Noun
Meaning
A mineral, found in crystals, of a yellow to green or brown color, and consisting of aluminia and glucina. It is very hard, and is often used as a gem.
Source: Webster's dictionarySynonyms
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Examples
Beryl has a high ratio of beryllium to aluminium, while the opposite is true for chrysoberyl.
Despite the similarity of their names, chrysoberyl and beryl are two completely different gemstones, although they both contain beryllium.
If the pegmatite fluid is rich in beryllium, crystals of beryl or chrysoberyl could form.
Cat's eye material is found as a small percentage of the overall chrysoberyl production wherever chrysoberyl is found.
The color in yellow chrysoberyl is due to Fe 3+ impurities.
This unusual requirement explains the rarity of this chrysoberyl variety.