tourmaline

mineralogy

mineral

isolated

geology

gem

specimen

rock

matrix

brazil

glassy

green

crystalline

hydrothermal

crystal

pegmatite

sample

stone

glass

gemmy

cluster

bicolor

gemstone

rough

transparent

red

mine

ore

aggregate

silicate

precious

rubellite

natural

artifact

multi

indicolite

south

blue

colour

raw

discovery

paraiba

elbaite

bedrock

white

treasure

pink

america