OUNCE/TOLAS/GRAMMES
Bar Weights
Gold bars can be denominated in different units of weight to accommodate the preferences of different geographical regions:
Grammes - International
Ounces - Mainly English-speaking countries: USA, UK and Australia
Tolas - Mainly India, Pakistan, Middle East, Singapore
Gold Weight Conversion Table
100 g............3.2151 OZ
1 oz...............31.1035 g
10 tola..........116.638 g........3.75 OZ
Melting Point Of PURE GOLD & Other Caratage
Melting point of pure gold (24Ct) is around 1064 Degree c.But for the other gold alloys melting point is so complex that we can generalise it for working with the alloy.To reduce the caratage copper and silver are mainly used.The melting point varies very much with the change of composition of copper and silver in the gold.Below given is the melting point of gold alloys which may not be correct scientifcally but can be used by people working with the metal.
Melting Point of 24 Ct Gold 1064 Degree celsius
23Ct -----------------------1015
22 Ct----------------------- 980
20 Ct -----------------------950
18 Ct -----------------------926
16Ct ------------------------905
14 Ct----------------------- 880
9Ct------------------------- 825 Degree celsius
GOLD SOLDERS -Making and Composition Of Different Carat Gold Solders
Soldering is a process in which two or more metal items are joined together by melting and flowing a filler metal into the joint, the filler metal having a relatively low melting point .The filler metal is the Solder.The solder is really a mixture of the metal of the articles to be soldered with other metal or metals that has lower melting points. In Gold and Silver the solder has very large importance as in jewellery making the solder has to be of the same purity as of the parts to be soldered.So we require seperate gold solders for each gold purity,that is for 22Ct we need 22Ct gold solders and for 21Ct we need solders that is 21Ct. Below given is a tipcal gold solders used in Indian Hand Made Jewellery for different purity Jewellery.The given mixture is for making 10Gms of solders for the said purity.
Solder Purity -Gold 24Ct +Indium +Zinc+ Silver + Copper( For 10 Gms. solder )
23Ct ------- 9.580 + 0.200 + 0.100 + 0.060 + 0.060
22Ct ------- 9.166 + 0.300 + 0.200 + 0.168 + 0.166
21Ct------- 8.750 + 0.500 + 0.400 + 0.175 + 0.175
20Ct------ 8.330 + 0.800 + 0.400 + 0.200+ 0.270
18Ct------ 7.500 + 1.000 + 0.500 + 0.200 + 0.800
14Ct ------ 5.840 + 1.000 + 1.000 + 0.000 + 2.160
9Ct------ 3.750 + 1.000 + 2.000 + 0.000 + 3.250
The Properties of the Element Gold
Name of Element : Gold
Symbol of Element : Au
Atomic Number of Gold : 79
Atomic Mass: 196.96655 amu
Melting Point: 1064.43 °C - 1337.5801 °K
Boiling Point: 2807.0 °C - 3080.15 °K
Number of Protons/Electrons in Gold : 79
Number of Neutrons in Gold : 118
Cubic Density @ 293 K: 19.32 g/cm3
Color of Gold : Soft yellow
KARAT?????????????
Did you know? by Steve Austin Karats are often mistaken to be a weight measure used by jewelers. Instead karats are a measure of gold's purity.Pure gold is too maleable to be used as-is by jewelers: a ring made of pure gold would bend and loose its shape and be impossible to wear. So jewelers "dillute" gold by mixing it with other stronger metals. One Karat measures the fineness of gold in 1/24 part which is 4.2%. Hence a 18 karat gold ring is made of 18/24 parts of gold, or 75% gold and 25% other metals.Metals added to gold are of cheaper value, so for equals weight, the price of a jewelery item goes up when the karat count goes up too
$ versus AU
Gold vs. Dollar
Was it a mistake? The recent trend of world economies is to
"diversify away from US dollar investments". To put it another way, world economies are loosing faith in the dollar because the US finances its trade imbalance by printing more and more bills. As goes the common saying "A tree does not grow to the sky" : printing more and more paper money does not increase worth forever and eventually the tall tree falls.
As world economies reduce their dollar reserves, gold is regaining favor as a safe bet. China and India, huge exporters and holders of US currency are both avid buyers of gold. There the ever-more affluent middle-class consumes a large portion of the gold market via jewellery. To some extend wealth flows away from the dollar into gold.
In China and India, gold is a keeper whereas dollars are not. Ultimately the two fastest growing economies may set the standard and history as to which asset will measure wealth and so far gold comes well ahead.
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