SPARK Young Reporter
EVER STUDIED
cRyStAlS?
iAN
cArNeL
These crystals are diff erent but very
similar. They are carnelian and sard.
They are orangey brownish-red and
are semi-precious gemstones. Sard
is harder and darker than carnelian.
They are coloured by impurities of
iron oxide.
r
T E
L a
8
SPARK
O oF
a ls
D
sAr
I think crystals are like treasure, but
they are part of science and part
of nature as well. They are part of
everything … well, apart from blocks
and pictures and mirrors… not
everything’s made out of crystals.
A house isn’t. Well, even a house could
be made out of minerals because of
the slate on the roof and the sand in
the bricks!
tIlES
photo by rocksnc r yst
s
Let’s start with some pictures.
By Simeon
pho
h
y C
to b
ri