The Diamond Jewelry Store

Fine jewelry will bring years of wearing pleasure with proper care and cleaning - and occasional inspection by a professional jeweler. There are also some special precautions to take with more delicate gems like pearls and emeralds. Good common sense is your best guide, but here are some helpful tips to keep all your fine jewelry in tip-top shape.

Clean your diamond jewelry regularly at home in an ultrasonic cleaner or by hand. To make your own jewelry cleaning solution, mix one part ammonia to six parts water.

Gently scrub the diamond piece with a small soft toothbrush to loosen dirt and restore the diamond's brilliance. Be careful not to scratch the metal setting. Always rinse after cleaning.

A flawless white diamond was sold on Wednesday for nearly 18.2 million Swiss francs ($16.21 million) to Guess Jeans founder Georges Marciano, who named it the "Chloe Diamond" after his daughter. The brilliant-cut diamond, which weighs 84.37 carats, is the second most expensive stone ever sold at auction. Bennett, a British expert in the jewelery business for 32 years, said: "This stone had the ability to take my breath away. It really is the paradigm of a diamond -- the essence of bling."

The unmounted diamond is of the highest grade white colour D and purity, according to Sotheby's which had estimated that the evening's star lot would fetch 15 to 20 million Swiss francs.

the winning bid by telephone in Geneva, said: "It was purchased by Georges Marciano, founder of Guess Jeans who lives in Beverly Hills (California).

Have a few million dollars laying around? Here's a sample of the most expensive diamond jewelry available on eBay right now:

How to Buy a Diamond

What you "C" is what you get. The diamond is a true marvel of nature. Magical. Mysterious. Universally treasured. And no two are exactly alike. Yet choosing a diamond you'll both love is not so mysterious - when you understand the characteristics that distinguish one gem from another. Any explanation of a diamond's beauty and value centers on three key quality factors: cut, color and clarity, and one unit of measure: carat weight. Collectively these are known as the four Cs. Learn what to look for. Decide your priorities. Then make the choice that's right for you.

The 4 C's of Diamonds

Cut

A diamond that is masterfully cut displays maximum brilliance and fire. Cut and proportion are extremely important because they have the greatest influence on the sparkle and value of a stone. A diamond that is well cut reflects light from one facet to another and disperses it back through the top of the stone.

Color

A diamond's body color can range from totally colorless to light yellow. The whiter or more colorless the stone, the more costly, because the absence of color is more rare. Also, the less color in the stone, the easier it is for light to pass through and be dispersed back into the spectrum of colors, like a rainbow.

Clarity

Nature is rarely perfect. So it is very rare to find a diamond that is completely pure or free of inclusions - minerals or crystals trapped within the stone at the time it was formed. Without ten-power magnification, you may never see these tiny inclusions. But they are the fingerprint that makes each diamond unique.

Carat Weight

The size of a diamond is defined by its weight, which is expressed in carats. One carat weighs one-fifth of a gram, and is divided into 100 points - like pennies to a dollar. The larger the diamond the more rare and costly it is. However, depending on their color, clarity and cut, two diamonds of the same carat weight can vary widely in their value.

Here is a sample of diamonds that are available right now on ebay:

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	1 Carat Round Brilliant Cut Loose Diamond 13ct H SI2 One Kt Anniversary Gift	$2,446.00	30m

	1 Carat Loose Diamond 11 Carat H I1 Ct Friends Brilliant Carret Friendship	$1,161.00	31m

	Loose Diamond 15 CT Carat G color SI1 Beautiful Round Cut Natural Certified	$4,439.00	31m

	loose diamond 340 Carat Emerald Cut 10x8 mm I4 natural imported new from mine	$1,499.58	31m

	Loose Diamond 16 CT Carat H color SI1 Beautiful Round Cut Natural Certified	$4,219.00	31m

	Round Brilliant Cut Loose Diamond 125ct D V S2 One Kt Friends One Carret Gift	$5,303.00	32m

	LOOSE Round DIAMOND 1 Cts COLOR E SI1 638 x 648 x 406 MM GREAT VALUE 8999	$3,185.00	32m

	Loose Diamond Stone 052ct H SI2 Carat Diamant Carret Friendship Diamand Estate	$801.00	33m