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Colorful EMERALD GREEN Rough
emerald
An emerald is made
from the mineral beryl.

Jewels It is green because of
tiny amounts

of chromium

Some gemstones are brightly colored. and vanadium. Polished

Gems take on their color as they form

in the ground.

Precious rock
RED AND BLUE Rough
6 sapphire Polished Unlike most gemstones, 7
Rough Rubies and sapphires are lapis lazuli is a rock. Rocks are
ruby
both made from the same mixtures of different minerals.
mineral, corundum. On its

own, corundum has no
color. But if chemical

elements mix with it,
it’s a different story.

Polished

Lapis lazuli is an
This is a ruby. It is red amazing deep blue.
because the element This is a sapphire. It is blue because Long ago people
chromium got into the iron and titanium mixed with the ground up this rock
crystal as it was forming. corundum crystal when it was forming. to make paint.