Diamonds Are Forever

Written by Sam Serio

Diamond jewelry: diamond rings, diamond earrings, diamond pendants and diamond bracelets are some ofrepparttar most sought after gemstone creations. Your eyes tell you how beautiful a piece of diamond jewelry is, but how do you know you are getting your money’s worth?

A little knowledge can go a long way to help you purchase a beautiful piece of diamond jewelry at a fair price.

Diamond Jewelry 101

A diamond's value is based on four criteria: color, cut, clarity, and carat. The clarity and color of a diamond usually are graded. However, scales are not uniform: a clarity grade of "slightly included" may represent a different grade on one grading system versus another, depending onrepparttar 145819 terms used inrepparttar 145820 scale. Make sure you know how a particular scale and grade representrepparttar 145821 color or clarity ofrepparttar 145822 diamond you're considering. A diamond can be described as "flawless" only if it has no visible surface or internal imperfections when viewed under 10-power magnification by a skilled diamond grader.

As with other gems, diamond weight usually is stated in carats. Diamond weight may be described in decimal or fractional parts of a carat. Ifrepparttar 145823 weight is given in decimal parts of a carat,repparttar 145824 figure should be accurate torepparttar 145825 last decimal place. For example, ".30 carat" could represent a diamond that weighs between .295 - .304 carat. Some retailers describe diamond weight in fractions and userepparttar 145826 fraction to represent a range of weights. For example, a diamond described as 1/2 carat could weigh between .47 - .54 carat. If diamond weight is stated as fractional parts of a carat,repparttar 145827 retailer should disclose two things: thatrepparttar 145828 weight is not exact, andrepparttar 145829 reasonable range of weight for each fraction orrepparttar 145830 weight tolerance being used.

Some diamonds may be treated to improve their appearance in similar ways as other gemstones. Since these treatments improverepparttar 145831 clarity ofrepparttar 145832 diamond, some jewelers refer to them as clarity enhancement. One type of treatment - fracture filling - conceals cracks in diamonds by filling them with a foreign substance. This filling may not be permanent and jewelers should tell you ifrepparttar 145833 diamond you're considering has been fracture-filled.

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 145818 diamond. Compared with other precious stonesrepparttar 145819 emerald in its occurrence in nature is unique, for it is found inrepparttar 145820 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 145821 coast ofrepparttar 145822 Red Sea. The best stones, however, are found in Columbia, South America. Fine specimens have also been found inrepparttar 145823 United States in North Carolina.

Whilerepparttar 145824 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 145825 most valued of which isrepparttar 145826 Emerald. The mineral beryl composingrepparttar 145827 various gems is practicallyrepparttar 145828 same in composition, hardness, and other properties, andrepparttar 145829 gems may be differentiated only by their color. In composition beryl is a silicate of aluminum and glucinum. Onrepparttar 145830 scale of hardness beryl is graded 7 ˝ to 8, and is thus much softer thanrepparttar 145831 diamond, ruby, or sapphire. It is owing to this fact thatrepparttar 145832 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 145833 crystals ofrepparttar 145834 mineral in its cruder form often grow to enormous size. There is one such single crystal preserved inrepparttar 145835 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 145836 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 145837 most highly prized ofrepparttar 145838 green gems. In brilliancy it exceeds all other green gems excepting onlyrepparttar 145839 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 145840 value ofrepparttar 145841 stone. In fact a perfect emerald is almost never found, and this circumstance has passed into an Eastern simile which runs, “As scarce as a perfect emerald,” this being a symbol forrepparttar 145842 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 145843 emerald is probably due to a trace of chromium in its composition.

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