340 COLOUR GUIDE
Chalcedony (sard) | See pp.146–47 |
This gem is a brownish red (sard) and
is translucent through to opaque, with
a waxy lustre.Chalcedony (carnelian) | See pp.146–47 |
This variety of chalcedony is brownish red to
orange, and translucent or opaque, with a
waxy or resinous lustre.Fire opal | See pp.158–59 | This red,
orange, or yellow variety of opal has a
vitreous lustre and runs from transparent
to translucent to opaque.Chalcedony (jasper) | See pp.146–49 |
Jasper occurs in all colours, most commonly
in reddish hues, with most examples striped
or spotted. With a vitreous lustre, it is opaque.Hypersthene | See p.204 | With dark
hues of black to black-brown or black-green,
this gem is vitreous or silky in lustre and
transparent to opaque.Bronzite | See p.205 | With a
brown or greenish hue, bronzite may
be transparent, translucent, or opaque,
and has a submetallic lustre.Axinite | See p.247 | Found as brown,
yellowish-green, green, bluish-green,
or blue material, axinite is transparent
with a vitreous lustre.Aragonite | See p.99 | Commonly
banded, this gem is reddish, yellowish, white,
greenish, bluish, or violet. Transparent to
opaque, it has a vitreous lustre.Calcite | See p.98 | From transparent
to opaque, calcite can be orange, white,
yellowish, pink, bluish, or colourless. It
has a vitreous or resinous lustre.Agate | See pp.152–53 | Red, yellow, green,
reddish brown, white or bluish white, with
varied banding, agate is waxy in lustre and
translucent to opaque.Copper | See pp.48–49 | This metal
is brown to copper red, tarnishing to black
or green. It has an opaque appearance
and a metallic lustre.Enstatite | See p.202 | Found in brown,
grey, white, green, or yellow, enstatite
may appear translucent or opaque. It has
a vitreous lustre and a grey streak.Rutile | See p.94 | With an adamantine to
submetallic lustre, rutile is brown, red, pale
yellow, pale blue, violet, or black, ranging
from transparent to opaque.Epidote | See p.251 | Epidote is found as
brown, pistachio green, yellow, or greenish
black. Vitreous to resinous in lustre, it can be
transparent to nearly opaque.Anthracite | See p.309 | Anthracite
is opaque, ranging from black to steel
grey in colour, and shines with a
submetallic lustre.Peanut wood | See p.318 | This
opaque fossilized wood is dark brown to
black, with white to cream peanut-sized,
ovoid shapes. It is vitreous or greasy.338-347_Colour-Index.indd 340 19/05/2016 12:55