VariousWords beta
Related Terms:
elbaite
buergerite
rubellite
indigolite
tourmalinic
semi precious
schorl
chemical element
quartz schist
mohrenkopf
siberite
luxullianite
borosilicate
indicolite
dravite
gemstone
luxulyanite
compound
pleochroism
verdelite
Definitions:
Noun
tourmaline
Definition: a mineral that is a complex borosilicate and hydroxide of aluminum containing iron and magnesium and calcium and lithium and sodium; it is usually black but occurs in transparent colored forms that are used as gemstones
Definition: A complex black or dark-coloured borosilicate mineral, compounded with various chemical elements and considered a semi-precious stone.