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Dubai GOLD, PRECIOUS STONES AND METALS

 

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Karat System:

A system of measurement based on 24 karats being "fine" or "pure" gold. 1 karat equals 1/24th fine gold by weight. This is the system used in the United States.

Karat
Parts Gold
% Gold

9 kt

9 in 24

37.50%

10 kt

10 in 24

41.67%

12 kt

12 in 24

50%

14 kt

14 in 24

58.33%

18 kt

18 in 24

75%

22 kt

22 in 24

91.67%

21 kt 21 in 24 87.5%

24 kt

24 in 24

99.99%

 

 

 

Joyalukkas Jewellery
JEWELLERY DESIGNERS IN DUBAI
DAMAS
Fashion jewellery in Dubai
KALOTI JEWELLERY
JEWELLERY PRODUCTION IN DUBAI
TAIBA

manufacturing jewellers in Dubai

Mohanlal Vallabhdas & Bros
MANUFACTURING JEWELLERS IN DUBAI
MAISORY GOLD INDUSTRY L.L.C.
Designers & manufacturers of exclusive gold jewelry
MIKURA PEARLS
PEARL JEWELLERY IN DUBAI
ZAINAL JEWELERS.COM
MODERN, ELEGANT & GLAMEROUS JEWELLERY IN DUBAI
OSKA JEWELLERY
Exceptional jewellery in Dubai
ROSY BLUE
QUALITY JEWELERY IN DUBAI
PROPERTIES OF GOLD

Gold is deep yellow in color. Its great reflectivity properties help keep its brightness and color from fading with time.

Gold will not rust, tarnish or corrode. Gold jewelry recovered from ancient Egyptian tombs is in the same state as when placed there over 4000 years ago.

Gold is softer than most other metals. Pure gold may easily be scratched. Fortunately, gold becomes harder when alloyed with other base metals.

Gold in its pure state has a melting point of 1945 degrees Fahrenheit (1063 degrees Celsius). When alloyed with other base metals the melting temperature is changed.

18K yellow gold has a melting point of 1675 degrees Fahrenheit

14K yellow gold has a melting point of about 1550 degrees Fahrenheit.

Gold has an SG of 19.33. It is relatively heavy compared to most metals, such as silver (SG 10.7) or iron (SG 7.8). A notable exception is platinum (SG 21.4).

Gold is more malleable than any other metal and can be hammered into foil so thin that it becomes almost transparent.

Gold has a unique ductility property allowing it to be drawn into wire so fine it can barely be seen.

Gold is relatively scarce and therefore expensive. It is estimated that only 125,000 tons of gold have been mined the world over since the beginning of time.

Gold is able to bond with other base metals. This property gives rise to the many different colors available in modern gold alloys.

 
DIAMONDS

Diamonds are weighed using the metric system. The carat is the unit of diamond weight. Do not confuse carat with karat. Carat refers to stone weight while karat refers to fineness of gold.

There are formulas for determining the weight of a stone in a mounting using size measurements.

Some of the devices used to give such accurate measurements are

  • the screw micrometer
  • the Moh gauge
  • he Leverage gauge
 

1 metric carat = 0.2 grams
1 metric carat = 200 milligrams 1 metric carat = 1/142 ounce

A carat is divided into 100 points :
1/4 ct. = 25 points = .25 ct. 1/3 ct. = 33 points = .33 ct. 1/2 ct. = 50 points = .50 ct. 3/4 ct. = 75 points = .75 ct.

 
PEARLS

The "Queen of Gems" - pearls - a symbol of love, elegance and refinement.

The Gulf of Arabia has always been rich in oysters and pearls have played an important part in the history of the region.

Until well into the 20th century, pearls were one of the main sources of income for the people of the Arabian Gulf. Traditional dhows carried pearl divers out to sea.

The divers with ropes attached around their waists would dive many meters below the surface, holding their breaths for incredible periods of time, to search for oysters.

In the evenings, the dhows would return to the harbours, laden with oysters and natural pearls.

 
REAL PEARLS

Only living oysters and mussels can create real pearls If a pearl is formed by a living oyster or mussel, it is a real pearl. All other pearls are Imitation. Real Pearls can be either Natural or Cultured