Rocks, Minerals, and Gems

What is this gemstone? 

• Ruby
• Emerald
• Obsidian
• Amethyst

Which of the following properties does the Mohs scale measure?

• Luster
• Hardness
• Density
• Streak

What mineral is used for pencils?

• Graphite
• Galena
• Magnetite
• Quartz

Diamond has a hardness of ___ on Mohs Hardness Scale.

• 1
• 5
• 8
• 10

What mineral is this?

• Graphite
• Sulfur
• Quartz

What mineral is aka as "Fool's Gold"? ?

• galena
• halite
• pyrite

This is also known as Volcanic glass.

• Limestone
• Sandstone
• Black Mirror
• Obsidian

What is the name of this dark and igneous rock that forms the oceanic crust? 

• shale
• slate
• basalt
• sandstone

What is this rock that has large mineral crystals and makes up continental crust?

• granite
• conglomerate
• schist
• gneiss

What is the gem in this image? 

• Ruby
• Halite
• Emerald
• Diamond