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12 Days of Christmas:
Minerals & Gems



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Welcome to the 12 Days of Xmas Quizzes. We're going to give you a quiz a day, each related (often loosely related) to a line of the song "12 Days Of Christmas". No prizes though, it's just for fun!

Day 5
On the fifth day of Christmas,
my true love gave to me,
5 golden rings,
4 calling birds,
3 French hens,
2 turtle doves,
And a partridge in a pear tree.


Minerals and gems is your subject for day 5!

Good luck!



What is red corundum better known as?
Rose Quartz
Garnet
Ruby
China clay


If a diamond is irradiated what colour does it become?
Red
Blue
Green
Purple


On the Mohs scale, which measures the hardness of rocks, what comes between quartz and corundum?
Calcite
Topaz
Orthoclase
Apatite


What is the birthstone for May?
Zircon
Turquoise
Emerald
Amethyst


Which metal is silver usually alloyed with to create sterling silver?
Copper
Zinc
Iron
Nickel


What is obsidian?
Volcanic glass
A type of quartz
A pink cultured pearl
A variety of chalcedony


In which state was the first diamond mine in the USA?
Arkansas
California
Missouri
Montana


What does fluorite do when exposed to UV light?
Fluoresce
Emit heat
Vibrate
Explode


Which of these metals is NOT contained in German silver?
Copper
Nickel
Zinc
Silver


More than 100 stones were cut from the largest diamond ever found, the Cullinan diamond. The largest of these is the Star Of Africa, which at more than 500 carats, is the largest cut diamond. Approximately how big was the Cullinan diamond?
1500 carats
2300 carats
3100 carats
4000 carats




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