| CONTENTS 
How Atoms are Arranged in Minerals
Why Some Minerals Cleave
The Mohs Hardness Scale
Agate
a type of quartz known as striated chalcedony
Amber
fossilized pine resin
Corundum
a transparent to translucent mineral which is found in
white, blue, red, yellow, green, brown, purple, and pink
forms
Cullinan Diamond
the largest clear white diamond ever found
Premier Rose Diamond
a triangular-shaped cleavage diamond of the finest color
weighing 353.9 carats
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