Precious Stones -The Big Five

Written by Sam Serio

The emerald is probablyrepparttar most rare of all precious stones and is considered by some to be even more valuable thanrepparttar 145835 diamond. Compared with other precious stonesrepparttar 145836 emerald in its occurrence in nature is unique, for it is found inrepparttar 145837 rock in which it was formed. Unlike diamonds, sapphires and rubies, it never occurs in gem gravels. The earliest known locality where emeralds were found was in Upper Egypt nearrepparttar 145838 coast ofrepparttar 145839 Red Sea. The best stones, however, are found in Columbia, South America. Fine specimens have also been found inrepparttar 145840 United States in North Carolina.

Whilerepparttar 145841 usual shade of color seen in emeralds is alluded to as emerald green, there are other shades, such as grass green, sea green and green slightly tinged with yellow. The shades most highly valued are those of an intense fresh green sometimes compared with that seen in a meadow in spring.

Beryl is a mineral known to gem lovers under several different names,repparttar 145842 most valued of which isrepparttar 145843 Emerald. The mineral beryl composingrepparttar 145844 various gems is practicallyrepparttar 145845 same in composition, hardness, and other properties, andrepparttar 145846 gems may be differentiated only by their color. In composition beryl is a silicate of aluminum and glucinum. Onrepparttar 145847 scale of hardness beryl is graded 7 Ĺ to 8, and is thus much softer thanrepparttar 145848 diamond, ruby, or sapphire. It is owing to this fact thatrepparttar 145849 emerald scratches easily and that care must be taken that when worn it is not subject to chafing by diamonds or other harder gems.

Beryl as a mineral is of quite common occurrence, andrepparttar 145850 crystals ofrepparttar 145851 mineral in its cruder form often grow to enormous size. There is one such single crystal preserved inrepparttar 145852 Boston Museum of Natural History, which is three and one half feet long and three feet wide and weighs several tons.

Beryl in this common form occurs in many localities, butrepparttar 145853 mineral in its rarer form of emerald is comparatively of very rare occurrence. The emerald or green beryl, as it should be scientifically known, has long beenrepparttar 145854 most highly prized ofrepparttar 145855 green gems. In brilliancy it exceeds all other green gems excepting onlyrepparttar 145856 very rare green sapphire. The most valuable specimens exhibit a vivid grass-green shade, and it is to this color that they owe their great value. Other considerations, such as freedom from imperfections, are quite secondary in determiningrepparttar 145857 value ofrepparttar 145858 stone. In fact a perfect emerald is almost never found, and this circumstance has passed into an Eastern simile which runs, ďAs scarce as a perfect emerald,Ē this being a symbol forrepparttar 145859 acme of rarity. The emerald is light in weight and an emerald of a given size will be about a third larger than a diamond and forty-five per cent larger than a sapphire of equal weight. The distinctive color ofrepparttar 145860 emerald is probably due to a trace of chromium in its composition.

Jewelry and Gemstone Care & Cleaning Tips

Written by Sam Serio

Diamond earrings, emerald rings, ruby bracelets, sapphire pendants; no doubt about it everybody loves beautiful gem stone jewelry. Gemstones are quite literally hard as rock, buy they can be damaged from careless handling and negligence. Here are some tips for keeping your gems and jewelry looking fabulous for years to come.

1.Remember, evenrepparttar hardest gemstone variety can be vulnerable to breakage if it has inclusions that weakenrepparttar 145834 crystal structure. Exercise common sense: if you have a ring set with a softer gem variety or an included stone, take it off before strenuous exercise. Evenrepparttar 145835 hardest gem of them all, diamond, can shatter in two with a single well-placed blow. Never remove rings by pulling onrepparttar 145836 stone: that habit may result in a loose, then lost, gem. 2.Most importantly, store each piece of gemstone jewelry separately so that harder stones donít scratch softer ones. Almost every gemstone is much harder thanrepparttar 145837 metal it is set in. Gems can scratchrepparttar 145838 finish on your gold, silver or platinum if you throw your jewelry in a heap in a drawer or jewelry box. 3.Rings in particular tend to collect dust and soap behindrepparttar 145839 gem, particularly if you wear them allrepparttar 145840 time. You need to clean them regularly to letrepparttar 145841 light in so your gems can shine. To clean transparent crystalline gemstones, simply soak them in water with a touch of gentle dish soap. Use a bowl of water rather thanrepparttar 145842 sink to eliminaterepparttar 145843 risk of anything going downrepparttar 145844 drain. If necessary, use a soft toothbrush to scrub behindrepparttar 145845 stone. Rinserepparttar 145846 soap off and pat dry with a lint-free cloth (you want to make sure threads wonít catch onrepparttar 145847 prongs) For diamond, ruby or sapphire, a touch of ammonia inrepparttar 145848 rinse water wonít hurt a bit and can add extra sparkle (for platinum and gold only, not silver!). Think twice before putting gems in an ultrasonic cleaner. Diamonds and rubies and sapphires will be fine but many other gems many not be, in particular emerald, opal, pearls, peridot: when in doubt, leave it out.

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