White gold and platinum are now the most popular precious metals for gemstone jewelry. Learn about the differences between these two metals.

The most popular precious metal for fine jewelry is 18K gold. Since pure gold (24K) is too soft for most jewelry, 18K gold (75% pure) provides the best combination of gold purity and practicality. 18K gold is manufactured in a range of colors, including yellow, white and rose. White gold is created by combining gold with white metal alloys such as silver and palladium and then plating with rhodium. Rose gold is produced by increasing the ratio of copper alloy.

Some gemstones, such as ruby, are thought to look best when set in yellow gold. Others, such as blue sapphire, are often preferred set in white gold. White diamonds look whitest when set in a white metal. There has been a definite trend towards white metals in recent years for all kinds of gemstones and diamonds.

White gold can easily be confused with another white metal, platinum. Platinum is also popular for fine jewelry and is often regarded as the most luxurious of the precious metals. Unlike gold, platinum is strong and hard enough to be used in its pure form, and platinum jewelry is usually stamped “950 Platinum”, indicating that it is 95% pure. Platinum is usually alloyed with 5% iridium, palladium or ruthenium.

Platinum is a very dense metal, even denser than gold. And since it is used in an almost pure form, platinum jewelry is noticeably heavier than 18K gold. Platinum is also a much rarer metal than gold, and its price has historically been substantially higher. Only recently has the price of platinum fallen below that of gold. Since the weight of platinum in a piece of jewelry is higher than the weight of 18K gold in a similar piece (because of platinum’s higher density and the purity of the metal used), platinum jewelry is usually much more expensive than 18K gold.

The color of platinum is whiter than unplated white gold. But much platinum jewelry is also rhodium plated to achieve the super high polish typical of rhodium. Some jewelry designers are now using brushed or matte finishes with unplated platinum in their jewelery.

Platinum is valued for its durability and strength. Though platinum can be scratched, it tends not to wear away, and platinum jewelry will usually outlast gold. Platinum is ideal for the prongs that hold a gemstone in a setting, since platinum is strong and stable when set in position.

While many people are stuck with their ordinary television sets, some are moving to modern home theaters. According to current home theater news, wider options are available for people. Home entertainment setups now come in a good range of choices. The flexibility is worth noting as well. Home entertainment systems are more convenient than movie theaters. Well, it’s basically much like having your own movie theater inside your home. Setting up a home theater system cannot be that easy. There are some decisions that should be made. If you want to have a state-of-the-art home entertainment system, you have to buy different components and make sure they are compatible with each other. Home theaters have revolutionized the home entertainment. They have simulated the experience one can get inside movie theaters by combining several components. There is a widescreen LCD screen and a DVD or Blu-ray player. Then you have stereophonic systems and high fidelity surround speakers. When you turn everything on, you get lifelike picture and superior sound quality inside your room. Properly installed home entertainment systems may even provide better viewing and listening experience than a movie theater. With the amazing experience you can get at home, you may not have to go to a movie theater and pay high ticket prices. Instead you can watch movies inside your home and experience the same thrill. The good thing about home theaters is that you can control everything. You can’t control the volume or the picture quality of a movie being played inside a commercial movie house. But you can in your very own in-house theater system. Even watching your favorite television shows is never the same. Everyone can agree that the most obvious difference is the quality of sound. Your old audio-video component system may sound fine. But dynamic speakers powered by high-definition cables bring about high quality, noise free sound. Digital surround sound fills the room. When you are watching a movie, the sound effects, the background music, and the delivered lines will all sound real. Home theaters simulate the experience. When you sit in front of a huge flat screen, it is as if you are in the actual movie set. This “being there” experience makes home theaters popular. The gushing of the waterfall sounds real. The roar of the thunderstorm feels ominous. The people in the movie talk as if they were just in the room with you. A huge screen is a chief component of home entertainment theater. The idea is to fill your field of view with moving picture, just like a movie screen would fill your eyes. If you see nothing else but life-size moving pictures right in front of you, it is easy to be completely engrossed. Investing in a superior quality screen is very important in this case. What exactly do you need to come up with a home entertainment theater system? You need a huge television (with screen size at least 27 inches across), a minimum of 4 high-definition speakers, an equalizer, and a DVD or Blu-ray player. Altogether, a home theater is more expensive than the old audio-video system. Plus, the electric bill may get higher too!

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