A diamond stud earring is made up of just one perfectly cut diamond, set in fine gold or silver. The simplicity of the design itself is its own selling point: anything fancier and you could easily fall into the trap of over-accessorizing. A single-stone earring is singled out for its sophisticated look.

A diamond is 58 times harder than the next hardest mineral on earth, corundum, the stuff from which rubies and sapphires are formed. Only diamonds can cut other diamonds. Ironically, diamonds are also brittle. If you hit one hard with a hammer, it will shatter. If it is placed in an oven and heated to about 763 degrees Celsius (1405 degrees Fahrenheit), it will simply vanish, releasing only a little carbon dioxide and NO visible traces whatsoever.

Contrary to popular perception, diamond stud earrings are not just for women! There are quite a few male celebrities who have popularized the use of ear accessories -- Johnny Depp being among the more famous of them. Respected artists like Usher and Kanye West have taken to sporting diamond earrings. Morgan Freeman wore a diamond earring to a roundtable discussion of his movie "The Sum of All Fears" in Washington DC in May 2002.

If stud earrings ever looked elegant on a woman, ironically enough they fantastically boost the macho appeal of the men who wear them. The purity of the stone, the value of the stud, all speak highly of the man's discerning taste, his eye for refinement. After all, uncouth bad boy-types aren't the only virile types in the world -- the snazzy, clean-cut James Bond figure has also been universally identified as irresistibly macho.

The virtue of the diamond stud earring lies in its unisex appeal. Both men and women have the privilege of accessorizing, and a single diamond stud is sometimes more than enough to set off their own personal styles. A simple diamond stud earring is timeless, and appropriately goes with the saying Fashion fades. Style is eternal.