COLOUR GUIDE 343
Microcline | See p.171 | Microline can be
blue to green, but is usually white to pale
yellow or salmon. It has a vitreous lustre
and is translucent to opaque.Chrysocolla | See p.196 | Green to
blue, and exhibiting veins and patches,
chrysocolla has a vitreous, waxy lustre,
and is opaque.Emerald | See pp.232–33 | Emerald
ranges from emerald green to a slightly
yellowish green. Vitreous in lustre, it is
transparent to opaque.Moldavite | See p.322 | This gem has
a bottle-green to brown-green colour.
It is translucent to opaque and
has a vitreous lustre.Ammolite | See p.319 | With a play of
mostly green or red colour in a mosaic-like
pattern, ammolite has greasy lustre and
appears opaque.Kornerupine | See p.252 | This
transparent gem with a vitreous lustre
can range from green to blue-green and
mixtures of brown and green.Vesuvianite | See p.247 | A green,
yellowish-green, yellowish brown, or violet
gem, vesuvianite is transparent to translucent
with a greasy lustre.Chrysoberyl (cat’s eye) | See p.84–85 |
With a chatoyant effect, this greenish
yellow to yellow-brown gem is opaque
with a vitreous to resinous lustre.Garnet (demantoid) | See pp.258–63 |
This green to yellowish green variety of
garnet is transparent. It also has an
adamantine lustre.Tourmaline (indicolite) | See pp.226–29 |
Indicolite is a dark blue to blue variety of
tourmaline. It is transparent to opaque and
has a vitreous lustre.Tourmaline (watermelon) | See
pp.226–29 | Watermelon tourmaline’s name
derives from its green rims on red or pink
cores. It is transparent with a vitreous lustre.Dioptase | See p.220 | With a
vitreous lustre, dioptase is translucent
and coloured a vivid, but dark, emerald
green or bluish green.Precious opal | See pp.158–61 | Precious
opal exhibits a play of colours that includes
all shades. With a vitreous lustre, it is
transparent to opaque.Chalcedony (bloodstone/heliotrope) |
See pp.146–51 | With blood-like spots on dark
green, bloodstone chalcedony is translucent
to opaque with a waxy, resinous lustre.Smithsonite | See p.105 | Of vitreous or
pearly lustre, smithsonite may be blue, white,
yellow, orange, brown, green, gray, or pink. It
is translucent to opaque.Turquoise | See p.110–11 | Light blue
to greenish blue, turquoise may have
“spiderweb” inclusions. With a waxy or
dull lustre, it is translucent to opaque.338-347_Colour-Index.indd 343 19/05/2016 12:55