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WorksheetsRed Gemstone
Total questions: 20
Worksheet time: 11mins
For a rock to be considered as a gemstone, it must have a great
Durability
Rarity
Beauty
All
Hardness in gemstones refers to what?
Its resistance to scratching
Its durability
Its position on the Moh's scale
Its ability to break along planar surfaces
Transparent beryl is what gemstone?
White sapphire
Aquamarine
Cubic zirconia
Watermelon tourmaline
Is color a reliable characteristic that be used to identity a gemstone?
Yes
No
Which is not a hue of colour
Red
White
Black
Green
Sapphires cannot be what color?
Red
White
Yellow
Orange
What is the most valuable gem in Asia?
Tourmaline
Citrine
Cat's Eye
Garnet
Garnets do not come in what color?
Blue
Red
Purple
Green
Which stone is not a real gemstone?
Cat's Eye
Bat's Eye
Hawk's Eye
Tiger's Eye
A cabochon cut is a
Round cut
Domed cut
Tapered cut
Narrow cut
Most gemstones are colorless when pure?
True
False
What do you call a colour-zoning (dual-coloured) tourmaline?
(a)
What is the colour for a fire opal?
Orange
White
Green
Blue
On the Moh's scale of hardness, what gemstone is rated a 9?
Sapphire
Emerald
Ruby
Padparadscha
What gemstone can change from one colour to another under different lighting?
Sapphire
Alexandrite
Pearl
Topaz
Select which gemstone family belongs to Corundum
Garnet
Tourmaline
Sapphire
Ruby
Which is the official birthstone for the month of July?
Diamond
Alexandrite
Sapphire
Ruby
If a gemstone is classes as a form of corundum, what would the gemstone most likely be?
A sapphire
A sapphire or a ruby
A ruby
Just a stone
On the Moh's hardness scale, what does the Garnet usually measure?
7
6.5-7.5
8
8.5-9
How many star points does a common star-ruby usually have?
4
5
6
8
