Definition of Onyx
O´nyx
n.
1.
(Min.)
Chalcedony
in
parallel
layers
of
different
shades
of
color
.
It
is
used
for
making
cameos
,
the
figure
being
cut
in
one
layer
with
the
next
as
a
ground
.
2.
Same
as
Mexican
onyx
.
3.
A
deep
jet-black
color
.
Onyx marble
a
banded
variety
of
marble
or
calcium
carbonate
resembling
onyx
.
It
is
obtained
from
Mexico
in
various
colors
ranging
from
white
to
deep
black
.
a.
1.
Deep
,
jet-black
.
Related Words
calcedony
,
chalcedony
,
sardonyx
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onymous
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