Which precious stones are found in the Namib desert in Africa?

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What color is always at the top of a single rainbow?

What month and year was National Geographic magazine first published?

What famous name in opera was the son-in-law of composer Franz Liszt?

What category of writing are the Hugo and Nebula awards given for?

What large island is south of Melbourne, Australia?

Which desert covers part of China and Mongolia?

What geographical boundary was first surveyed in 1763 by Charles and Jeremiah?

What is the chemical symbol for Helium?

Hg is the symbol for what element?

What is the name of Nicole Kidman's character in the 2001 movie "Moulin Rouge!"?

What rock star caused a stir in 2007 when he said that he'd snorted his late father's cremains?

In the TV series "Doctor Who', what does the acronym TARDIS stand for?

New York's Wall Street was named when a wall was built there for what purpose?

What number is represented by "V" in Roman numerals?

The Artful Dodger is a character from which novel?